HIGH-FIELD AND MICROSTRUCTURE STUDIES OF SUPERCONDUCTING nYBa2Cu3Oy:AgO COMPOSITES-Reference-Cited by-同舟云学术

HIGH-FIELD AND MICROSTRUCTURE STUDIES OF SUPERCONDUCTING nYBa2Cu3Oy:AgO COMPOSITES

Published:1989-04-20 Issue:06 Volume:03 Page:525-535
ISSN:0217-9849
Container-title:Modern Physics Letters B
language:en
Short-container-title:Mod. Phys. Lett. B

Author:

HUANG C.Y.¹,TAI H.H.²,WU M.K.³

Affiliation:

1. Lockheed Missiles & Space Co., Inc., Research & Development Division, Palo Alto, CA 94304–1191, USA

2. Lockheed Missiles & Space Co., Inc., Materials and Process Laboratories, Sunnyvale, CA 94088, USA

3. Department of Metallurgy and Materials Science, Henry Krumb School of Mines, Columbia University, New York, NY 10027, USA

Abstract

We have measured the resistance of superconducting n YBa 2 Cu 3 O y: AgO (n=2,3,4, and 5) composites above 77 K for magnetic field up to 20 T. The data reveal that the resistance is zero even at 80 K and 20 T. The temperature dependence of the critical field near T c (91.6 K) is very strong, and critical fields at 0 K are thus expected to be very high. Our results of scanning electron microscopy and polarized light microscopy have shown that the presence of silver results in the growth of very large grains (~0.5 mm) with silver dispersed in the grains, giving rise to strong pinning and, hence, large superconducting critical current densities.

Publisher

World Scientific Pub Co Pte Lt

Subject

Condensed Matter Physics,Statistical and Nonlinear Physics

Link

https://www.worldscientific.com/doi/pdf/10.1142/S0217984989000844

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