Structural and Electrical Anomalies of Ba2YCu3O7-y at the Oxygen Stoichiometry of 6.48
- 1 January 1988
- journal article
- Published by IOP Publishing in Japanese Journal of Applied Physics
- Vol. 27 (1A) , L48-50
- https://doi.org/10.1143/jjap.27.l48
Abstract
Ba2YCu3O7-y (7-y\fallingdotseq6.48) was prepared by quenching a specimen from 735–738°C in air, and subsequently annealing at 420°C in a sealed gold capsule. The material may have been a superconductor for about 3 min after the opening of the gold capsule, but it changed to a nonsuperconducting material with high electrical resistivity by the reaction with moisture in air. The lattice constants of the material are abnormal, and a superstructure was observed for 30–40% of the particles by electron microscopy.Keywords
This publication has 4 references indexed in Scilit:
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