ELECTRONIC-STRUCTURE OF SB IN BAPB1-XSBXO3 SUPERCONDUCTING COMPOUNDS

被引：18

作者：

EIBSCHUTZ, M

REIFF, WM

CAVA, RJ

KRAJEWSKI, JJ

PECK, WF

机构：

[1] NORTHEASTERN UNIV,DEPT CHEM,BOSTON,MA 02115

[2] AT&T BELL LABS,MURRAY HILL,NJ 07974

来源：

APPLIED PHYSICS LETTERS | 1990年 / 56卷 / 23期

关键词：

D O I：

10.1063/1.103248

中图分类号：

O59 [应用物理学];

学科分类号：

摘要：

The Mössbauer effect of the 37.2 keV γ transition of 121Sb has been employed to study the electronic configuration of Sb ions in BaPb1-xSbxO3 superconducting materials. The isomer shift is constant as a function of Sb content and falls in the region correspoding to the Sb(V) valence state. The isomer shift of 7 mm/s is the lowest value yet observed for an Sb(V)O 6 chromophore and indicates a high degree of covalency, corresponding to significant 5sm5pn hybridization. The mixed valence state of an equal amount of Sb(III) and Sb(V) has not been observed.

引用

页码：2339 / 2341

页数：3

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