PHYSICOCHEMICAL DISTINCTION BETWEEN CU3+ AND O22- IN YBA2CU3O6.5+DELTA LATTICE UPON OXIDATION REACTION OF BROMIDE AND SPECTROSCOPIC ANALYSES

被引：10

作者：

CHOY, JH ^{[1
]}

JUNG, DY ^{[1
]}

KIM, SJ ^{[1
]}

CHOI, QW ^{[1
]}

DEMAZEAU, G ^{[1
]}

机构：

[1] CNRS,CHIM SOLIDE LAB,F-33405 TALENCE,FRANCE

来源：

PHYSICA C | 1991年 / 185卷

关键词：

D O I：

10.1016/0921-4534(91)91605-4

中图分类号：

O59 [应用物理学];

学科分类号：

摘要：

The oxidation states of copper and oxygen in YBa2Cu3O6.5+delta have been carefully studied by various methods. The absence of superoxide (O2-) as well as peroxide (O2(2-) or .O-) in YBa2Cu3O6.5+delta is confirmed by comparing the selective redox titrations and colorimetric results for the reactions of KO2 and BaO2 in an aqueous solution. Furthermore, the X-ray photoelectron spectra of Cu2P allow us to support the existence of Cu3+ in the superconducting sample.

引用

页码：763 / 764

页数：2

共 9 条

[1]

BAZAROTTI A, 1988, PHYS REV B, V38, P6461

[2] X-RAY PHOTOELECTRON SPECTROSCOPIC EVIDENCE FOR CU3+ VALENCE STATE IN SUPERCONDUCTING PHASE, YBA2CU3O7-DELTA [J].