XPS STUDIES ON PASSIVATED AND DEGRADED YBA2CU3O7-X FILMS

被引：18

作者：

MAJUMDAR, D ^{[1
]}

CHATTERJEE, D ^{[1
]}

PAVPUJALT, G ^{[1
]}

机构：

[1] EASTMAN KODAK CO,CORP RES LABS,ROCHESTER,NY 14650

来源：

PHYSICA C | 1989年 / 158卷 / 03期

关键词：

Ceramic Materials - Spectroscopy - Superconducting Materials--Surfaces;

D O I：

10.1016/0921-4534(89)90237-2

中图分类号：

O59 [应用物理学];

学科分类号：

摘要：

High-temperature YBa2Cu3O7-x superconductors are known to degrade in the presence of moisture. It was shown that the use of certain polymeric materials in solution during processing of the superconductor could passivate the film and reduce degradation in the macroscopic scale. X-ray photoelectron spectroscopy was used to study the surfaces of passivated as well as degraded YBa2Cu3O7-x samples. In the degraded sample, Y, Ba, Cu and O were present in chemical states other than those expected in superconductors. Segregation of Ba at the surface was also observed. In the passivated sample, superconducting species were retained at the surface despite limited impurity build-up.

引用

页码：413 / 418

页数：6

共 12 条

[1] X-RAY PHOTOELECTRON-SPECTROSCOPY STUDY OF Y2BACUO5 AND YBA2CU3O9-DELTA [J].