University of LiègeULgFaculty of EngineeringFacSALibrary News   
Jean-François Fagnard - Publications ORBI
Wera, L., Fagnard, J.-F., Kumar, N. D., Shi, Y., Vanderheyden, B., & Vanderbemden, P. (2017). Magnetic Shielding Above 1 T at 20 K With Bulk, Large Grain YBCO Tubes Made by Buffer-aided Top Seeded Melt Growth. IEEE Transactions on Applied Superconductivity, 27(4).
Peer reviewed (verified by ORBi)
YBCO tubes of ~ 10 mm diameter closed at one extremity were engineered by a Buffer-Aided Top Seeded Melt Growth fabrication process (BA-TSMG). These tubes can act as efficient “dc” magnetic shields and are ...
Wera, L., Fagnard, J.-F., Kumar, N. D., Shi, Y., Vanderheyden, B., & Vanderbemden, P. (2016, September 07). Magnetic shielding above 1 T at 20 K with bulk, large grain YBCO tubes made by Buffer-aided Top Seeded Melt Growth. Poster session presented at Applied Superconductivity Conference ASC 2016, Denver, USA.
A superconducting tube can be used as an efficient magnetic shield. The best shielding performance levels are usually achieved when the tube is closed at one or both extremities. The purpose of the present ...
Fagnard, J.-F., Morita, M., Nariki, S., Teshima, H., Caps, H., Vanderheyden, B., & Vanderbemden, P. (2016). Magnetic moment and local magnetic induction of superconducting/ferromagnetic structures subjected to crossed fields: experiments on GdBCO and modelling. Superconductor Science and Technology, 29(12), 125004.
Peer reviewed (verified by ORBi)
Recent studies have shown that ferromagnetic materials can be used together with bulk high temperature superconductors in order to improve their magnetic trapped field. Remarkably, it has also been pointed out ...
Geng, J., Matsuda, K., Fu, L., Fagnard, J.-F., Zhang, H., Zhang-Xiao, X., Shen, B., Dong, Q., Baghdadi, M., & Coombs, T. A. (2016). Origin of dc voltage in type II superconducting flux pumps: field, field rate of change, and current density dependence of resistivity. Journal of Physics : D Applied Physics, 49(11), 11LT01.
Peer reviewed (verified by ORBi)
Superconducting flux pumps are the kind of devices which can generate direct current into superconducting circuit using external magnetic field. The key point is how to induce a dc voltage across the ...
Philippe, M., Fagnard, J.-F., Wera, L., Morita, M., Nariki, S., Teshima, H., Caps, H., Vanderheyden, B., & Vanderbemden, P. (2016). Influence of crossed fields in structures combining large grain, bulk (RE)BCO superconductors and soft ferromagnetic discs. Journal of Physics: Conference Series, 695, 012003.
Peer reviewed (verified by ORBi)
Bulk (RE)BCO superconductors are able to trap record magnetic fields and can be used as powerful permanent magnets in various engineering applications such as rotating machines and magnetic bearings. When ...
Stachowiak, P., Mucha, J., Szewczyk, D., Zhai, Y., Hsu, C. H., Coombs, T. A., Fagnard, J.-F., Philippe, M., & Vanderbemden, P. (2016). Thermal properties of Ti-doped Cu–Zn soft ferrites used as thermally actuated material for magnetizing superconductors. Journal of Physics : D Applied Physics, 49, 125004.
Peer reviewed (verified by ORBi)
A great majority of widely used ferrite ceramics exhibit a relatively high temperature of order–disorder phase transition in their magnetic subsystem. For applications related to the magnetization process of ...
Thaljaoui, R., Pękała, M., Fagnard, J.-F., & Vanderbemden, P. (2016). Critical analysis of the paramagnetic to ferromagnetic phase transition in Pr0.55K0.05Sr0.4MnO3. Physica B: Condensed Matter, 482, 8 - 13.
Peer reviewed (verified by ORBi)
The critical properties of monovalent doped manganite Pr0.55K0.05Sr0.4MnO3 around the paramagnetic to ferromagnetic phase transition were investigated through various methods: the modified Arrott plots (MAP ...
Wera, L., Fagnard, J.-F., Hogan, K., Vanderheyden, B., & Vanderbemden, P. (2016). Magnetic Shielding with Bulk High Temperature Superconductors: Improvement of the Shielded Volume in Hollow Cylinders. In M., Muralidhar (Ed.), Superconductivity: Applications Today and Tomorrow (pp. 95-114). New York: Nova Science.
Peer reviewed
The superconducting HTS hollow cylinder has been one of the first geometries to demonstrate its utility as an efficient passive magnetic shield, and particularly for DC magnetic shielding. The shielding ...
Wera, L., Fagnard, J.-F., Hogan, K., Vanderheyden, B., & Vanderbemden, P. (2015, September 09). Design of the superconducting end caps of a tubular magnetic shield. Poster session presented at EUropean Conference on Applied Superconductivity EUCAS 2015.
Shielding a sensitive device against DC or AC stray magnetic fields can be realized very efficiently with high-Tc superconductors. A simple magnetic shield can be obtained with a tube enclosing the device ...
Philippe, M., Ainslie, M. D., Wera, L., Fagnard, J.-F., Dennis, A., Shi, Y., Cardwell, D. A., Vanderheyden, B., & Vanderbemden, P. (2015). Influence of soft ferromagnetic sections on the magnetic flux density profile of a large grain, bulk Y-Ba-Cu-O superconductor. Superconductor Science and Technology, 28, 095008.
Peer reviewed (verified by ORBi)
Bulk, high temperature superconductors have significant potential for use as powerful permanent magnets in a variety of practical applications due to their ability to trap record magnetic fields. In this paper ...
Baghdadi, M., Ruiz, H. S., Fagnard, J.-F., Zhang, M., Wang, W., & Coombs, T. A. (2015). Investigation of Demagnetization in HTS Stacked Tapes Implemented in Electric Machines as a Result of Crossed Magnetic Field. IEEE Transactions on Applied Superconductivity, 25(3), 6602404.
Peer reviewed (verified by ORBi)
This paper investigates the practical effectiveness of employing superconducting stacked tapes to superconducting electric machinery. The use of superconducting bulks in various practical applications has been ...
Fagnard, J.-F., Kirsch, S., Morita, M., Teshima, H., Vanderheyden, B., & Vanderbemden, P. (2015). Measurements on magnetized GdBCO pellets subjected to small transverse ac magnetic fields at very low frequency: Evidence for a slowdown of the magnetization decay. Physica C: Superconductivity, 512, 42-53.
Peer reviewed (verified by ORBi)
Due to their ability to trap large magnetic inductions, superconducting bulk materials can be used as powerful permanent magnets. The permanent magnetization of such materials, however, can be significantly ...
Pękała, M., Pękała, K., Drozd, V., Fagnard, J.-F., & Vanderbemden, P. (2015). Effect of nanocrystalline structure on magnetocaloric effect in manganite composites (1/3)La0.7Ca0.3MnO3/(2/3)La0.8Sr0.2MnO3. Journal of Alloys & Compounds, 629, 98-104.
Peer reviewed (verified by ORBi)
Poly- and nanocrystalline manganite composites (1/3)La0.7Ca0.3MnO3 and / (2/3)La0.8Sr0.2MnO3 prepared by the sol-gel method are studied by magnetic and transport measurements. The Arrott plots and universal ...
Egan, R., Philippe, M., Wera, L., Fagnard, J.-F., Vanderheyden, B., Dennis, A., Shi, Y., Cardwell, D. A., & Vanderbemden, P. (2015). A flux extraction device to measure the magnetic moment of large samples; application to bulk superconductors. Review of Scientific Instruments, 86(2), 025107.
Peer reviewed (verified by ORBi)
We report the design and construction of a flux extraction device to measure the DC magnetic moment of large samples (i.e., several cm3) at cryogenic temperature. The signal is constructed by integrating the ...
Hogan, K., Fagnard, J.-F., Wera, L., Vanderheyden, B., & Vanderbemden, P. (2015). Magnetic shielding of an inhomogenous magnetic field source by a bulk superconducting tube. Superconductor Science and Technology, 28(3), 035011.
Peer reviewed (verified by ORBi)
Bulk type-II irreversible superconductors can act as excellent passive magnetic shields, with a strong attenuation of low frequency magnetic fields. Up to now, the performances of superconducting magnetic ...
Zou, J., Ainslie, M. D., Fujishiro, H., Bhagurkar, A. G., Naito, T., Babu, N. H., Fagnard, J.-F., Vanderbemden, P., & Yamamoto, A. (2015). Numerical modelling and comparison of MgB 2 bulks fabricated by HIP and infiltration growth. Superconductor Science and Technology, 28(7), 075009.
Peer reviewed
MgB 2 in bulk form shows great promise as trapped field magnets (TFMs) as an alternative to bulk (RE)BCO materials to replace permanent magnets in applications such as rotating machines, magnetic bearings and ...
Wera, L., Fagnard, J.-F., Hogan, K., Vanderheyden, B., & Vanderbemden, P. (2014, August 12). Experimental study of the magnetic shielding performances of a Bi2223 tube closed by a Bi2223 cap. Poster session presented at Applied Superconductivity Conference ASC 2014, Charlotte, NC, USA.
A superconducting tube can be used as an efficient magnetic shield. However, the shielding factor (defined as the ratio between the applied magnetic induction and the magnetic induction measured inside the ...
Philippe, M., Fagnard, J.-F., Kirsch, S., Xu, Z., Dennis, A., Shi, Y., Cardwell, D. A., Vanderheyden, B., & Vanderbemden, P. (2014). Magnetic characterisation of large grain, bulk Y–Ba–Cu–O superconductor–soft ferromagnetic alloy hybrid structures. Physica C: Superconductivity, 502, 20-30.
Peer reviewed (verified by ORBi)
Large grain, bulk Y–Ba–Cu–O (YBCO) high temperature superconductors (HTS) have significant potential for use in a variety of practical applications that incorporate powerful quasi-permanent magnets. In the ...
Thaljaoui, R., Boujelben, W., Pękała, M., Pękała, K., Antonowicz, J., Fagnard, J.-F., Vanderbemden, P., Dąbrowska, S., & Mucha, J. (2014). Structural, magnetic and magneto-transport properties of monovalent doped manganite Pr0.55K0.05Sr0.4MnO3. Journal of Alloys and Compounds, 611(0), 427 - 432.
Peer reviewed (verified by ORBi)
Pr0.55K0.05Sr0.4MnO3 sample have been synthesized using the conventional solid state reaction. Rietveld refinements of the X-ray diffraction patterns at room temperature confirm that the sample is single phase ...
Thaljaoui, R., Boujelben, W., Pękała, M., Pękała, K., Fagnard, J.-F., Vanderbemden, P., Donten, M., & Cheikhrouhou, A. (2014). Magnetocaloric effect of monovalent K doped manganites Pr0.6Sr0.4−xKxMnO3 (x=0 to 0.2). Journal of Magnetism and Magnetic Materials, 352(0), 6 - 12.
Peer reviewed (verified by ORBi)
Magnetic and magnetocaloric properties are reported for polycrystalline monovalent potassium doped manganites Pr0.6Sr0.4−xKxMnO3 (x=0, 0.05, 0.1, 0.15 and 0.2) crystallized in orthorhombic structure with Pnma ...
Kirsch, S., Fagnard, J.-F., Vanderbemden, P., & Vanderheyden, B. (2013). Semi-analytical study of AC losses in an infinitely long superconducting cylinder surrounded by a metallic sheath: magnetic field dependent critical current density and generation of harmonics. Superconductor Science and Technology, 26, 115001.
Peer reviewed (verified by ORBi)
We study the AC losses in an infinitely long cylinder made of a superconducting core surrounded by a non-magnetic metallic sheath and subjected to an axial magnetic field. The losses are computed by assuming ...
Namburi, D. K., Closset, R., Fagnard, J.-F., Vanderbemden, P., Vertruyen, B., & Cloots, R. (2013, January 30). YBCO superconducting thick films: electrophoretic deposition (EPD) on non-planar silver substrates. Paper presented at SHAPING 5, 5th International conference on Shaping of Advanced Ceramics, Mons, Belgium.
A new formulation of a stable YBa2Cu3O7-δ (YBCO) suspension is proposed in which butanol is preferred to the commonly-used acetone as the suspension medium. Appropriate surfactant has been used to develop the ...
Laurent, P., Fagnard, J.-F., & Vanderbemden, P. (2013). AC Magnetic Measurements on Superconductors: Design of a Device for Magneto-Thermal Measurements. In A., Lay Ekuakille, Advanced Instrument Engineering: Measurement, Calibration, and Design (pp. 208-222). IGI Global.
Peer reviewed
This work describes the design and realisation of an apparatus to measure simultaneously the AC magnetic properties and the temperature distribution on the top surface of bulk superconducting samples (up to 32 ...
Marchal, C., Fagnard, J.-F., Shi, Y. H., Cardwell, D. A., Mucha, J., Misiorek, H., Cloots, R., Vertruyen, B., & Vanderbemden, P. (2013). The influence of a grain boundary on the thermal transport properties of bulk, melt-processed Y-Ba-Cu-O. Superconductor Science and Technology, 26, 015006.
Peer reviewed (verified by ORBi)
We report the dependence of thermal conductivity, thermoelectric power and electrical resistivity on temperature for a bulk, large grain melt-processed Y-Ba-Cu-O (YBCO) high temperature superconductor (HTS ...
Pękała, M., Wolff-Fabris, F., Fagnard, J.-F., Vanderbemden, P., Mucha, J., Gospodinov, M. M., Lovchinov, V., & Ausloos, M. (2013). Magnetic properties and anisotropy of orthorhombic DyMnO3 single crystal. Journal of Magnetism and Magnetic Materials, 335(0), 46 - 52.
Peer reviewed (verified by ORBi)
An orthorhombic DyMnO3 single crystal has been studied in magnetic fields up to 14 T and between 3 K and room temperature. The field dependent ordering temperature of Dy moments is deduced. The paramagnetic ...
Thaljaoui, R., Pękała, K., Pękała, M., Boujelben, W., Szydłowska, J., Fagnard, J.-F., Vanderbemden, P., & Cheikhrouhou, A. (2013). Magnetic susceptibility and electron magnetic resonance study of monovalent potassium doped manganites Pr0.6Sr0.4−xKxMnO3. Journal of Alloys and Compounds, 580(0), 137 - 142.
Peer reviewed (verified by ORBi)
The monovalent potassium doped manganites Pr0.6Sr0.4−xKxMnO3 (x = 0.05–0.2) are characterized using the complementary magnetic susceptibility and electron resonance methods. In paramagnetic phase the ...
Wera, L., Fagnard, J.-F., Levin, G. A., Vanderheyden, B., & Vanderbemden, P. (2012). Magnetic shielding with YBCO coated conductors: influence of the geometry on its performances. IEEE Transactions on Applied Superconductivity, 23(3), 8200504.
Peer reviewed (verified by ORBi)
A superconducting magnetic shield can be built as a stack of several sections of milled 2G coated conductors. Each section consists of a closed loop where persistent currents can flow and provide a strong ...
Wera, L., Fagnard, J.-F., Levin, G., Vanderheyden, B., & Vanderbemden, P. (2012, October 10). Magnetic shielding with YBCO coated conductors: influence of the geometry on its performances. Poster session presented at Applied Superconductivity Conference ASC2012, Portland, OR, USA.
A superconducting magnetic screen can be built as a stack of several sections of milled 2G coated conductors. Each section consists of a closed loop where persistent currents can flow and provide a strong ...
Philippe, M., Fagnard, J.-F., Dennis, A., Shi, Y., Cardwell, D. A., Vanderheyden, B., & Vanderbemden, P. (2012, October). Magnetic behaviour of soft ferromagnetic alloys attached to bulk (RE)BCO superconductors. Poster session presented at ASC 2012 : Applied Superconductivity Conference, Portland, OR, USA.
Bulk (RE)BCO materials can be used potentially as powerful permanent magnets. The magnetic field distribution around a bulk HTS magnet, however, is strongly non-uniform (conic profile predicted by the Bean ...
Bhame, S., Fagnard, J.-F., Pekala, M., Vanderbemden, P., & Vertruyen, B. (2012). La0.7Ca0.3MnO3 / Mn3O4 composites: does an insulating secondary phase always enhance the low field magnetoresistance of manganites? Journal of Applied Physics, 111, 063905.
Peer reviewed (verified by ORBi)
Composites of magnetoresistive La0.7Ca0.3MnO3 (LCMO) with insulating Mn3O4 are useful as a model system because no foreign cation is introduced in the LCMO phase by interdiffusion during the heat treatment ...
Fagnard, J.-F., Elschner, S., Hobl, A., Bock, J., Vanderheyden, B., & Vanderbemden, P. (2012). Magnetic shielding properties of a superconducting hollow cylinder containing slits: Modelling and experiment. Superconductor Science and Technology, 25(10), 104006.
Peer reviewed (verified by ORBi)
This paper deals with the magnetic properties of bulk high temperature superconducting cylinders used as magnetic shields. We investigate, both numerically and experimentally, the magnetic properties of a ...
Pekala, M., Pekala, K., Drozd, V., Staszkiewicz, K., Fagnard, J.-F., & Vanderbemden, P. (2012). Magnetocaloric and transport study of poly- and nanocrystalline composite manganites La0.7Ca0.3MnO3/La0.8Sr0.2MnO3. Journal of Applied Physics, 112, 023906.
Peer reviewed (verified by ORBi)
Magnetocaloric and transport properties are reported for novel poly- and nanocrystalline double composite manganites, La0.8Sr0.2MnO3/La0.7Ca0.3MnO3, prepared by the sol-gel method. Magnetic field dependence of ...
Fagnard, J.-F. (2011). Experimental and numerical study of the factors influencing the performances of magnetic screens made of high temperature superconductors. Unpublished doctoral thesis, Université de Liège, ​Liège, ​​Belgium.
In this thesis, we investigate in details the magnetic shielding processes in high temperature superconductors. We aim at predicting and measuring the influence of the parameters governing the superconducting ...
Lousberg, G., Fagnard, J.-F., Chaud, X., Ausloos, M., Vanderbemden, P., & Vanderheyden, B. (2011). Magnetic properties of drilled bulk high-temperature superconductors filled with a ferromagnetic powder. Superconductor Science and Technology, 24, 035008.
Peer reviewed (verified by ORBi)
It is shown that filling the holes of a drilled bulk high-temperature superconductor (HTS) with a soft ferromagnetic powder enhances its trapping properties. The magnetic properties of the trapped field magnet ...
Rivas-Murias, B., Fagnard, J.-F., Vanderbemden, P., Traianidis, M., Henrist, C., Cloots, R., & Vertruyen, B. (2011). Spray drying: An alternative synthesis method for polycationic oxide compounds. Journal Of Physics And Chemistry Of Solids, 72(3), 158-163.
Peer reviewed (verified by ORBi)
Synthesis of polycationic compounds by the spray-drying technique is an interesting alternative in the domain of aqueous precursor synthesis methods. Spray drying yields high quality samples with good ...
Turczynski, S., Orlinski, K., Pawlak, D. A., Diduszko, R., Mucha, J., Pekala, M., Fagnard, J.-F., Vanderbemden, P., & Carpenter, M. A. (2011). Czochralski crystal growth, thermal conductivity, and magnetic properties of Pr(x)La(1- x)AlO3, where x = 1, 0.75, 0.55, 0.40, 0. Crystal Growth & Design, 11(4), 1091-1097.
Peer reviewed (verified by ORBi)
Crystals of Pr(x)La(1-x)AlO3 solid solution have been grown by the Czochralski method for the first time, to the best of our knowledge. Crystals with high praseodymium concentration tend to grow spirally. The ...
Lousberg, G., Fagnard, J.-F., Ausloos, M., Vanderbemden, P., & Vanderheyden, B. (2010). Numerical Study of the Shielding properties of Macroscopic Hybrid Ferromagnetic/Superconductor Hollow Cylinders. IEEE Transactions on Applied Superconductivity, 20(1), 33.
Peer reviewed (verified by ORBi)
We study the magnetic shielding properties of hybrid ferromagnetic/superconductor (F/S) structures consisting of two coaxial cylinders, with one of each material.We use an axisymmetric finite-element model in ...
Fagnard, J.-F., Dirickx, M., Levin, G. A., Barnes, P. N., Vanderheyden, B., & Vanderbemden, P. (2010). Use of second generation coated conductors for efficient shielding of DC magnetic fields. Journal of Applied Physics, 108, 013910.
Peer reviewed (verified by ORBi)
This paper reports the results of an experimental investigation of the performance of two types of magnetic screens assembled from YBa2Cu3O7-d (YBCO) coated conductors. Since effective screening of the axial ...
Fagnard, J.-F., Elschner, S., Bock, J., Dirickx, M., Vanderheyden, B., & Vanderbemden, P. (2010). Shielding efficiency and E(J) characteristics measured on large melt cast Bi-2212 hollow cylinders in axial magnetic fields. Superconductor Science and Technology, 23, 095012.
Peer reviewed (verified by ORBi)
We show that tubes of melt cast Bi-2212 used as current leads for LTS magnets can also act as efficient magnetic shields. The magnetic screening properties under an axial DC magnetic field are characterized ...
Laurent, P., Fagnard, J.-F., Hari Babu, N., Cardwell, D. A., Vanderheyden, B., & Vanderbemden, P. (2010). Self-heating of bulk high temperature superconductors of finite height subjected to a large alternating magnetic field. Superconductor Science and Technology, 23, 124004.
Peer reviewed (verified by ORBi)
In this work we study, both experimentally and numerically, the self-heating of a bulk, large YBCO pellet of aspect ratio (thickness / diameter) ~ 0.4 subjected to a large AC magnetic field. To ensure accurate ...
Lousberg, G. P., Fagnard, J.-F., Ausloos, M., Vanderbemden, P., & Vanderheyden, B. (2010). Modification of the trapped field in bulk HTS as a result of the drilling of a pattern of artificial holes. Journal of Physics: Conference Series, 234, 012023.
Peer reviewed (verified by ORBi)
The trapped magnetic field is examined in bulk high-temperature superconductors that are artificially drilled along their c-axis. The influence of the hole pattern on the magnetization is studied and compared ...
Pekala, M., Pekala, K., Drozd, V., Fagnard, J.-F., & Vanderbemden, P. (2010). Magnetocaloric effect in La0.75Sr0.25MnO3 manganite. Journal of Magnetism & Magnetic Materials, 322(21), 3460-3463.
Peer reviewed (verified by ORBi)
The polycrystalline manganite La0.75Sr0.25MnO3 prepared by an alternative carbonate precipitation route reveals the rhombohedral perovskite structure. Magnetization isotherms measured up to 2 T are used to ...
Pekala, M., Drozd, V., Fagnard, J.-F., & Vanderbemden, P. (2010). Magnetocaloric effect in nano- and polycrystalline manganites La0.5Ca0.5MnO3. Journal of Alloys & Compounds, 507, 350-355.
Peer reviewed (verified by ORBi)
Structure, magnetic and magnetocaloric properties of poly- and nanocrystalline La0.5Ca0.5MnO3 manganites prepared by the citrate sol–gel method are studied in a broad temperature range. The Arrott plots show ...
Pietnoczka, A., Pekala, M., Bacewicz, R., Drozd, V., Fagnard, J.-F., Vanderbemden, P., Antonowicz, J., & Zalewski, W. (2010). Local Structure of Mn in (La1-xHox)2/3Ca1/3MnO3 Studied by X-ray Absorption Fine Structure. Acta Physica Polonica A, 117(2), 257-261.
Peer reviewed (verified by ORBi)
Results of X-ray absorption fine structure measurements in manganites (La1-xHox)2/3Ca1/3MnO3 with 0.15 < x < 0.50 are presented. When LaMnO3 is doped with a divalent element such as Ca2+, substituting forLa3 ...
Vanderbemden, P., Laurent, P., Fagnard, J.-F., Ausloos, M., Hari Babu, N., & Cardwell, D. A. (2010). Magneto-thermal phenomena in bulk high temperature superconductors subjected to applied AC magnetic fields. Superconductor Science and Technology, 23, 075006.
Peer reviewed (verified by ORBi)
In the present work we study, both theoretically and experimentally, the temperature increase in a bulk high temperature superconductor subjected to applied AC magnetic fields of large amplitude. We ...
Lousberg, G., Fagnard, J.-F., Haanappel, E., Chaud, X., Ausloos, M., Vanderheyden, B., & Vanderbemden, P. (2009, December). Pulsed-field magnetization of drilled bulk high-temperature superconductors: flux front propagation in the volume and on the surface. Superconductor Science and Technology, (22), 125026.
Peer reviewed (verified by ORBi)
We present a method for characterizing the propagation of the magnetic flux in an artificially drilled bulk high-temperature superconductor (HTS) during pulsed-field magnetization. As the magnetic pulse ...
Fagnard, J.-F., Dirickx, M., Ausloos, M., Lousberg, G., Vanderheyden, B., & Vanderbemden, P. (2009). Magnetic shielding properties of high- Tc superconducting hollow cylinders: model combining experimental data for axial and transverse magnetic field configurations. Superconductor Science and Technology, 22(10), 105002 (10.
Peer reviewed (verified by ORBi)
Magnetic shielding efficiency was measured on high- Tc superconducting hollow cylinders subjected to either an axial or a transverse magnetic field in a large range of field sweep rates, dBapp/dt. The ...
Fagnard, J.-F., Denis, S., Lousberg, G., Dirickx, M., Ausloos, M., Vanderheyden, B., & Vanderbemden, P. (2009). DC and AC Shielding Properties of Bulk High-Tc Superconducting Tubes. IEEE Transactions on Applied Superconductivity, 19(3), 2905-2908.
Peer reviewed (verified by ORBi)
We have studied numerically and experimentally the magnetic flux penetration in high-Tc superconducting tube subjected to a uniform magnetic field parallel to its long axis. This study is carried in view of ...
Lousberg, G., Fagnard, J.-F., Noudem, J. G., Ausloos, M., Vanderheyden, B., & Vanderbemden, P. (2009). Measurement of the magnetic field inside the holes of a drilled bulk high-Tc superconductor. Superconductor Science and Technology, 22, 045009.
Peer reviewed (verified by ORBi)
We use macroscopic holes drilled in a bulk YBCO superconductor to probe its magnetic properties in the volume of the sample. The sample is subjected to an AC magnetic flux with a density ranging from 30 to ...
Pekala, M., Drozd, V., Fagnard, J.-F., Vanderbemden, P., & Ausloos, M. (2009). Magneto transport characterization of the Sn-doped TbMnO3 manganites. Journal of Alloys & Compounds, 467(1-2), 35 - 40.
Peer reviewed (verified by ORBi)
The structural, magnetic and electrical transport properties of the Sn-doped TbMnO3 manganites are studied by X-ray diffraction, ac susceptibility, dc magnetization and electrical resistivity measurements. The ...
Pekala, M., Drozd, V., Fagnard, J.-F., Vanderbemden, P., & Ausloos, M. (2009). Magnetotransport of La0.5Ba0.5MnO3. Journal of Applied Physics, 105(1), 013923-013923-8.
Peer reviewed (verified by ORBi)
Physical properties of polycrystalline La0.5Ba0.5MnO3 are reported from low temperature (10 K) up to above room temperature. An aim has been to obtain microscopic parameters and to search for the ...
Pekala, M., Drozd, V., Fagnard, J.-F., Vanderbemden, P., & Ausloos, M. (2008). Magnetocaloric effect in nano- and polycrystalline manganite La0.7Ca0.3MnO3. Applied Physics A : Materials Science & Processing, 90(2), 237-241.
Peer reviewed (verified by ORBi)
La0.7Ca0.3MnO3 samples were prepared in nano- and polycrystalline forms by the sol-gel and solid state reaction methods, respectively, and structurally characterized by synchrotron X-ray diffraction. The ...
Laurent, P., Fagnard, J.-F., Vanderheyden, B., Hari Babu, N., Cardwell, D. A., Ausloos, M., & Vanderbemden, P. (2008). An ac susceptometer for the characterization of large, bulk superconducting samples. Measurement Science & Technology, 19(8), 085705.
Peer reviewed (verified by ORBi)
The main purpose of this work was to design, develop and construct a simple, low-cost ac susceptometer to measure large, bulk superconducting samples (up to 32 mm in diameter) in the temperature range 78–120 ...
Vertruyen, B., Cloots, R., Ausloos, M., Fagnard, J.-F., & Vanderbemden, P. (2007). Unusual resistivity hysteresis in a bulk magnetoresistive ferromagnetic/ferrimagnetic composite (La0.7Ca0.3MnO3/Mn3O4): Role of demagnetization effects. Applied Physics Letters, 91(6), 062514.
Peer reviewed (verified by ORBi)
The authors report an intriguing resistivity versus magnetic field dependence in polycrystalline composite samples containing a magnetoresistive manganite (ferromagnetic/conducting La0.7Ca0.3MnO3) and a ...
Fabris, F. W., Pekala, M., Drozd, V., Fagnard, J.-F., Vanderbemden, P., Liu, R. S., & Ausloos, M. (2007). Magnetocaloric effect and magnetic properties of Tb0.9Sn0.1MnO3. Journal of Applied Physics, 101(10), 103904.
Peer reviewed (verified by ORBi)
The magnetocaloric effect in magnetic materials is of great interest nowadays. In this article we present an investigation about the magnetic properties near the magnetic transition in a polycrystalline sample ...
Pollet, M., Doumerc, J. P., Guilmeau, E., Grebille, D., Fagnard, J.-F., & Cloots, R. (2007). Does the orbital degeneracy play any role in the high thermopower of lamellar cobaltites? Journal of Applied Physics, 101(8).
Peer reviewed (verified by ORBi)
This article investigates the role of the CoO6 octahedron distortion on the electronic properties and more particularly on the high value of the Seebeck coefficient in the BiCaCoO lamellar cobaltites. Our ...
Vertruyen, B., Cloots, R., Ausloos, M., Fagnard, J.-F., & Vanderbemden, P. (2007). Electrical transport and percolation in magnetoresistive manganite/insulating oxide composites: Case of La0.7Ca0.3MnO3/Mn3O4. Physical Review. B, 75(16), 165112.
Peer reviewed (verified by ORBi)
We report the results of electrical resistivity measurements carried out on well-sintered La0.7Ca0.3MnO3/Mn3O4 composite samples with almost constant composition of the magnetoresistive manganite phase (La0 ...
Vertruyen, B., Fagnard, J.-F., Vanderbemden, P., Ausloos, M., Rulmont, A., & Cloots, R. (2007). Electrical transport and magnetic properties of Mn3O4-La0.7Ca0.3MnO3 ceramic composites prepared by a one-step spray-drying technique. Journal of the European Ceramic Society, 27(13-15), 3923-3926.
Peer reviewed (verified by ORBi)
La0.7Ca0.3MnO3/Mn3O4 composites can be synthesized in one step by thermal treatment of a spray-dried precursor, instead of mixing pre-synthesized powders. Another advantage of this composite system is that a ...
Krins, N., Hatert, F., Traina, K., Dusoulier, L., Molenberg, I., Fagnard, J.-F., Vanderbemden, P., Rulmont, A., Cloots, R., & Vertruyen, B. (2006). LiMn2-xTixO4 spinel-type compounds (x <= 1): Structural, electrical and magnetic properties. Solid State Ionics, 177(11-12), 1033-1040.
Peer reviewed (verified by ORBi)
LiMn2-xTixO4 compounds with 0.5 =<x =< 1 were prepared by solid state reaction and Pechini technique. Powder X-ray diffraction showed that all samples crystallize with the spinel crystal structure (S.G. Fd3m ...
Dusoulier, L., Denis, S., Fagnard, J.-F., Henrist, C., Vanderheyden, B., Vanderbemden, P., Rulmont, A., Dirickx, M., Ausloos, M., Cloots, R., & Vertruyen, B. (2006). YBa2Cu3O(7-delta) thick films on Ag prepared by the electrophoretic deposition technique. Journal of Physics: Conference Series, 43, 134-137.
Peer reviewed (verified by ORBi)
YBa2Cu3O7-δ thick films have been deposited onto Ag substrates by the Electrophoretic Deposition (EPD) technique. Different microstructures and electrical behaviours were observed depending on the starting ...
Fagnard, J.-F., Crate, D., Jamoye, J.-F., Laurent, P., Mattivi, B., Cloots, R., Ausloos, M., Genon, A., & Vanderbemden, P. (2006). Use of a High-Temperature Superconducting Coil for Magnetic Energy Storage. Institute of Physics Conference Series, 43, 829-832.
Peer reviewed
A high temperature superconducting magnetic energy storage device (SMES) has been realised using a 350 m-long BSCCO tape wound as a ''pancake'' coil. The coil is mounted on a cryocooler allowing temperatures ...
Laurent, P., Fagnard, J.-F., Mathieu, J.-P., Meslin, S., Noudem, J. G., Cloots, R., Ausloos, M., & Vanderbemden, P. (2006). Study of thermal effects in bulk RE-BCO superconductors submitted to a variable magnetic field. Journal of Physics: Conference Series, 43, 505-508.
Peer reviewed (verified by ORBi)
When bulk RE-BCO superconductors are used as permanent magnets in engineering applications, they are likely to experience transient variations of the applied magnetic field. The resulting vortex motion may ...
Wu, B.-M., Li, B., Zhen, W.-H., Ausloos, M., Du, Y.-L., Fagnard, J.-F., & Vanderbemden, P. (2005). Spin-cluster effect and lattice-deformation-induced Kondo effect, spinglass freezing, and strong phonon scattering in La0.7Ca0.3Mn1-xCrxO3. Journal of Applied Physics, 97(10, Part 1), 103908.
Peer reviewed (verified by ORBi)
Besides the Kondo effect observed in dilute magnetic alloys, the Cr-doped perovskite manganate compounds La0.7Ca0.3Mn1-xCrxO3 also exhibit Kondo effect and spin-glass freezing in a certain composition range ...
Vertruyen, B., Rulmont, A., Cloots, R., Fagnard, J.-F., Ausloos, M., Vandriessche, I., & Hoste, S. (2005). Low-field magnetoresistance in La0.7Ca0.3MnO3 manganite compounds prepared by the spray drying technique. Journal of Materials Science, 40(1), 117-122.
Peer reviewed (verified by ORBi)
Calcium-substituted lanthanum manganite compounds were synthesized by the spray drying technique. This method - whose main advantages are versatility, high reproducibility and scalability - yields small grain ...
Laurent, P., Mathieu, J.-P., Mattivi, B., Fagnard, J.-F., Meslin, S., Noudem, J. G., Ausloos, M., Cloots, R., & Vanderbemden, P. (2005). Study by Hall probe mapping of the trapped flux modification produced by local heating in YBCOHTS bulks for different surface/volume ratios. Superconductor Science and Technology, 18(8), 1047-1053.
Peer reviewed (verified by ORBi)
The aim of this report is to compare the trapped field distribution under a local heating created at the sample edge for different sample morphologies. Hall probe mappings of the magnetic induction trapped in ...
Mathieu, J.-P., Fagnard, J.-F., Laurent, P., Mattivi, B., Henrist, C., Vanderbemden, P., Ausloos, M., & Cloots, R. (2005). Silver paint as a soldering agent for DyBaCuO single-domain welding. Superconductor Science and Technology, 18(4), 508-512.
Peer reviewed (verified by ORBi)
Silver paint has been tested as a soldering agent for DyBaCuO 4 single-domain welding. Junctions have been manufactured on Dy-Ba-Cu-O single domains cut either along planes parallel to the c-axis IT or along ...
Mathieu, J.-P., Koutzarova, T., Rulmont, A., Fagnard, J.-F., Laurent, P., Mattivi, B., Vanderbemden, P., Ausloos, M., & Cloots, R. (2005). Investigation of DyBa2CU3O7-d superconducting domains grown by the infiltration technique starting with small size Dy-211 particles. Superconductor Science and Technology, 18(2 Sp. Iss. SI), 136-S141.
Peer reviewed (verified by ORBi)
An infiltration and growth process is here used as an alternative to the classical top-seeded melt-textured growth process for the production of Dy-123 single-domains with finely dispersed small size Dy-211 ...
Wu, B. M., Ausloos, M., Du, Y. L., Zheng, W. H., Li, B., Fagnard, J.-F., & Vanderbemden, P. (2005). Spin glass behaviour and spin-dependent scattering in La0.7Ca0.3Mn0.9Cr0.1O3 perovskites. Chinese Physics Letters, 22(3), 686-689.
Peer reviewed (verified by ORBi)
The magnetic, electrical and thermal transport properties of the perovskite La0.7Ca0.3Mn0.9Cr0.1O3 have been investigated by measuring dc magnetization, ac susceptibility, the magnetoresistance and thermal ...
Vertruyen, B., Rulmont, A., Cloots, R., Ausloos, M., Fagnard, J.-F., Dorbolo, S., & Vanderbemden, P. (2004). Effects of silicon addition on the electrical and magnetic properties of copper-doped (La,Ca)MnO3 compounds. Journal of Magnetism and Magnetic Materials, 268(3), 364-373.
Peer reviewed (verified by ORBi)
In this paper we report about the electrical properties of La0.7Ca0.3MnO3 compounds substituted by copper on the manganese site and/or deliberately contaminated by SiO2 in the reactant mixture. Several ...
Fagnard, J.-F., Vanderbemden, P., Cloots, R., & Ausloos, M. (2003). Anisotropic AC behavior of multifilamentary Bi-2223/Ag tapes. IEEE Transactions on Applied Superconductivity, 13(2, Part 3), 2976-2979.
Peer reviewed (verified by ORBi)
In this communication, we report on the anisotropy of the superconducting properties of multifilamentary Bi-based tapes experimentally investigated by AC magnetic susceptibility measurements. The ...
Mucha, J., Pekala, M., Szydlowska, J., Gadomski, W., Akimitsu, J., Fagnard, J.-F., Vanderbemden, P., Cloots, R., & Ausloos, M. (2003). Magnetotransport study of MgB2 superconductor. Superconductor Science and Technology, 16(10), 1167-1172.
Peer reviewed (verified by ORBi)
Precise magnetotransport studies of heat and charge carriers in polycrystalline MgB2 show that magnetic fields up to 8 T remarkably influence electrical resistivity, thermoelectric power and thermal ...
Pekala, M., Mucha, J., Cloots, R., Fagnard, J.-F., Vanderbemden, P., & Ausloos, M. (2003). Magneto-transport study of nb-doped Bi/Pb2223 superconductor. Physica C: Superconductivity, 387(1-2), 191-197.
Peer reviewed (verified by ORBi)
The magneto-transport properties of Bi1.5Pb0.4Nb0.1Sr2Ca2Cu3O10-x polycrystalline, superconducting ceramic are reported. The material was found to be chemically homogeneous and partially textured. The mixed ...
Fagnard, J.-F., Vanderbemden, P., Crate, D., Misson, V., Ausloos, M., & Cloots, R. (2002). Intragranular and intergranular behaviour of multifilamentary Bi-2223/Ag tapes. Physica C: Superconductivity, 372(Part 2), 970-973.
Peer reviewed (verified by ORBi)
This communication aims at reporting the superconducting properties of Bi-2223/Ag tapes determined by using various measuring techniques. First. the original samples have been characterized by electrical ...
Marguillier, D., Cloots, R., Rulmont, A., Fagnard, J.-F., Vanderbemden, P., & Ausloos, M. (2002). YBa2Cu3O7 tapes prepared by sol-gel deposition techniques: microstructure and structural characterizations. Physica C: Superconductivity, 372(Part 2), 715-718.
Peer reviewed (verified by ORBi)
We report on the preparation conditions of YBa2Cu3O7 polycrystalline superconducting tapes by a sol-gel deposition technique. We present some discussion on the compatibility between the nature of the substrate ...