Crystalline Phases in Superconductor Ba-Y-Cu-O with High Tc Prepared by Melting Method
- 1 August 1987
- journal article
- Published by IOP Publishing in Japanese Journal of Applied Physics
- Vol. 26 (8A) , L1272
- https://doi.org/10.1143/jjap.26.l1272
Abstract
A superconducting Ba-Y-Cu-O oxide with high T c was prepared by a melt quenching method, and the effect of melt quenching conditions on the value of T c and crystalline phases in quenched and annealed samples was examined. It was found that the values of T c,zero for annealed samples were 88 or 89 K, irrespective of the first melt quenching conditions. The crystalline phases in quenched samples were a mixture of Y2O3 and BaCuO2, and the main crystalline phase in annealed samples was orthorhombic Ba2YCu3O7-δ Superconducting Ba2YCu3O7-δ oxides were formed very easily by annealing the melt quenched samples.Keywords
This publication has 3 references indexed in Scilit:
- X-Ray and Electron Microscopic Study of a High Temperature Superconductor Y0.4Ba0.6CuO2.22Japanese Journal of Applied Physics, 1987
- Identification of the High Tc Superconductor in the System Y-Ba-Cu-OJapanese Journal of Applied Physics, 1987
- Identification of Phases in High Tc Oxide Superconductor Ba0.7Y0.3Cu1OxJapanese Journal of Applied Physics, 1987