Reference : An ac susceptometer for the characterization of large, bulk superconducting samples
Scientific journals : Article
Engineering, computing & technology : Electrical & electronics engineering
http://hdl.handle.net/2268/22617
An ac susceptometer for the characterization of large, bulk superconducting samples
English
Laurent, Philippe [Université de Liège - ULg > Dép. d'électric., électron. et informat. (Inst.Montefiore) > Capteurs et systèmes de mesures électriques >]
Fagnard, Jean-François [Université de Liège - ULg > Dép. d'électric., électron. et informat. (Inst.Montefiore) > Capteurs et systèmes de mesures électriques >]
Vanderheyden, Benoît [Université de Liège - ULg > Dép. d'électric., électron. et informat. (Inst.Montefiore) > Electronique et microsystèmes >]
Hari Babu, N. [University of Cambridge > IRC in Superconductivity > > >]
Cardwell, D. A. [University of Cambridge > IRC in Superconductivity > > >]
Ausloos, Marcel [Université de Liège - ULg > Département de physique > Physique statistique appliquée et des matériaux - S.U.P.R.A.S. >]
Vanderbemden, Philippe mailto [Université de Liège - ULg > Dép. d'électric., électron. et informat. (Inst.Montefiore) > Capteurs et systèmes de mesures électriques >]
2008
Measurement Science & Technology
Institute of Physics
19
8
085705
Yes (verified by ORBi)
International
0957-0233
Bristol
United Kingdom
[en] ac susceptometer ; superconductivity ; magnetic measurements
[en] 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 K. The design incorporates a double heating system that enables
a high heating rate (25 K h−1) while maintaining a small temperature gradient (<0.2 K) across
the sample. The apparatus can be calibrated precisely using a copper coil connected in series
with the primary coil. The system has been used successfully to measure the temperature
dependence of the ac magnetic properties of entire RE–Ba–Cu–O [(RE)BCO] bulk
superconducting domains. A typical ac susceptibility measurement run from 78 K to 95 K
takes about 2 h, with excellent temperature resolution (temperature step ∼ 4 mK) around the
critical temperature, in particular.
Services Universitaires Pour la Recherche et les Applications Technologiques de Matériaux Électro-Céramiques, Composites, Supraconducteurs - SUPRATECS
Fonds de la Recherche Scientifique (Communauté française de Belgique) - F.R.S.-FNRS ; Engineering and Physical Sciences Research Council - EPSRC ; Royal Military Academy of Belgium
Researchers ; Professionals
http://hdl.handle.net/2268/22617
10.1088/0957-0233/19/8/085705
http://www.iop.org/EJ/abstract/0957-0233/19/8/085705

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