首页   按字顺浏览 期刊浏览 卷期浏览 Detection of surface (∼1 &mgr;m) impurity phases in highTcsuperconductors
Detection of surface (∼1 &mgr;m) impurity phases in highTcsuperconductors

 

作者: D. W. Cooke,   M. S. Jahan,   J. L. Smith,   M. A. Maez,   W. L. Hults,   I. D. Raistrick,   D. E. Peterson,   J. A. O’Rourke,   S. A. Richardson,   J. D. Doss,   E. R. Gray,   B. Rusnak,   G. P. Lawrence,   C. Fortgang,  

 

期刊: Applied Physics Letters  （AIP Available online 1989）
卷期: Volume 54, issue 10  

页码: 960-962

 

ISSN:0003-6951

 

年代: 1989

 

DOI:10.1063/1.101419

 

出版商: AIP

 

数据来源: AIP

 

摘要:

We show that thermally stimulated luminescence is an important method for detecting insulating impurity phases that commonly occur in highTcsuperconductors. The technique is sensitive to impurity phases at <1% level with a probe depth of ∼ 1 &mgr;m, which is the region of interest for many superconductor applications. Samples of Y2O3, Y2BaCuO5, YBa2Cu3O6.2, BaCO3, Ba3CuO4, BaCuO2, and YBa2Cu3Ox(x≊7) were investigated. All but the high quality sintered pellets of YBa2Cu3Oxexhibited relatively intense luminescence. The absence of luminescence, and thus of insulating phases, is correlated with low values of rf surface resistance.

 

点击下载:  PDF (359KB)



返 回