Transport measurements in single-grain GdBCO+Ag bulk superconductors processed by infiltration growth


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Authors
Namburi, DK 
Erbe, M 
Hänisch, J 
Cardwell, DA 
Abstract

jats:titleAbstract</jats:title>jats:pTransport measurements performed on a cross-sectional slice prepared from a bulk GdBajats:sub2</jats:sub>Cujats:sub3</jats:sub>Ojats:sub7-jats:italicx</jats:italic></jats:sub>-Ag single-grain superconductor of 25 mm in diameter are described and the results presented. The sample, which was fabricated via the buffer-assisted top-seeded infiltration growth process, was capable of trapping a maximum magnetic field of ~ 1 T at 77 K. Transport measurements on superconducting, bulk single-grain RE-Ba-Cu-O [(RE)BCO] samples are generally very challenging due to their large critical current densities and poor mechanical properties. We present a straightforward and reliable approach to prepare reproducibly specimens from the parent single grain and results of transport property measurements on these samples in a commercial Physical Property Measurement System (PPMS). Critical current densities determined via magnetic and transport measurements are compared and discussed.</jats:p>

Description

Funder: University of Geneva

Keywords
GdBCO, Bulk superconductor, Infiltration and growth technique, Transport measurements, Microstructure, Magnetic properties
Journal Title
Applied Physics A: Materials Science and Processing
Conference Name
Journal ISSN
0947-8396
1432-0630
Volume Title
Publisher
Springer Science and Business Media LLC
Sponsorship
EPSRC (EP/T014679/1)