CUED Publications database

Behavior of bulk melt-textured YBCO single domains subjected to crossed magnetic fields

Vanderbemden, P and Dorbolo, S and Hari-Babu, N and Ntatsis, A and Cardwell, DA and Campbell, AM (2003) Behavior of bulk melt-textured YBCO single domains subjected to crossed magnetic fields. IEEE Transactions on Applied Superconductivity, 13. pp. 3746-3749. ISSN 1051-8223

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Abstract

We have experimentally investigated the crossed magnetic field effects on bulk melt-processed YBCO single domains. The samples were first permanently magnetized along their c-axis and then subjected to several cycles of a transverse magnetic field parallel to the ab planes. The magnetic properties along the c and ab directions were simultaneously measured using a couple of orthogonal pick-up coils as well as a Hall probe placed against the sample surface. The effects of both sweep amplitude and polarity were investigated. Field sweeps of alternate polarities are shown to affect the decay of the c-axis magnetization much more strongly than field sweeps of unique polarity do. However, the c-axis magnetization does not show any saturation even after a large number of field sweeps. Next, a micro-Hall probe scanning system was used to measure the distribution of magnetic induction over the top surface of the single domain subjected to the same combination of magnetic fields. The results are shown to be consistent with those determined with the sensing coils and bring out the role played by geometric effects.

Item Type: Article
Uncontrolled Keywords: Critical current Crossed fields Magnetic measurements Melt-textured (RE)BCO materials
Subjects: UNSPECIFIED
Divisions: Div C > Materials Engineering
Depositing User: Cron Job
Date Deposited: 07 Mar 2014 12:11
Last Modified: 27 Nov 2014 19:22
DOI: 10.1109/TASC.2003.812538