Composite reaction texturing of superconducting ceramic composites

Textured composite Bi2Sr2Ca1Cu2O8+a (2212) conductors have been fabricated by a novel method termed composite reaction texturing (CRT) that makes use of inert whiskers or fibers to align superconducting grains and control their morphology. The process has two stages, the initial alignment of fibre m...

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Veröffentlicht in:Applied physics letters 1992-06, Vol.60 (25), p.3183-3185
Hauptverfasser: SOYLU, B, ADAMOPOULOS, N, GLOWACKA, D. M, EVETTS, J. E
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container_end_page 3185
container_issue 25
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container_title Applied physics letters
container_volume 60
creator SOYLU, B
ADAMOPOULOS, N
GLOWACKA, D. M
EVETTS, J. E
description Textured composite Bi2Sr2Ca1Cu2O8+a (2212) conductors have been fabricated by a novel method termed composite reaction texturing (CRT) that makes use of inert whiskers or fibers to align superconducting grains and control their morphology. The process has two stages, the initial alignment of fibre material in a precursor followed by a composite reaction stage to develop a textured microstructure. In this work, disk-shaped pellets with whisker alignment in the pellet plane were reacted to produce CRT material with a transport critical-current density in excess of 4×103 A cm−2 at 77 K (B=0). At 4.5 K, the critical-current density was ∼105 A cm−2 in zero field and 2.104 A cm−2 at 12 T. The method clearly has promise for the production by a wind-and-react technique of high critical-current conductors with large cross sections.
doi_str_mv 10.1063/1.106736
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subjects Cross-disciplinary physics: materials science
rheology
Exact sciences and technology
Growth from melts
zone melting and refining
Materials science
Methods of crystal growth
physics of crystal growth
Physics
title Composite reaction texturing of superconducting ceramic composites
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