CUBIC PHASE IN THE Y-BA-CU-O SYSTEM

被引：29

作者：

AGOSTINELLI, JA

CHEN, S

BRAUNSTEIN, G

机构：

[1] Corporate Research Laboratories, Eastman Kodak Company, Rochester

来源：

PHYSICAL REVIEW B | 1991年 / 43卷 / 13期

关键词：

D O I：

10.1103/PhysRevB.43.11396

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

A metastable phase in the Y-Ba-Cu-O system has been discovered. The phase is closely related to the high-T(c) superconductors and is characterized by a simple-cubic perovskite structure with a lattice parameter of 3.897 angstrom. A composition Y:Ba:Cu:O = 1.18:1.97:3.05:6.95 was determined using ion-backscattering spectrometry. The material is a black semiconductor and shows no transition to superconductivity down to 4 K. It is an excellent candidate for use in heteroepitaxial structures with the family of rare-earth-alkaline-earth-cuprate superconductors. The cubic phase was prepared as a thin film by excimer-laser ablation.

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页码：11396 / 11399

页数：4

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