ELECTRONIC-STRUCTURE OF SB IN PEROVSKITE SUPERCONDUCTING COMPOUNDS

被引：5
作者：
EIBSCHUTZ, M [1 ]
REIFF, WM [1 ]
CAVA, RJ [1 ]
KRAJEWSKI, JJ [1 ]
PECK, WF [1 ]
机构：
[1] NORTHEASTERN UNIV,DEPT CHEM,BOSTON,MA 02115
来源：
APPLIED PHYSICS LETTERS | 1991年 / 58卷 / 24期
关键词：
D O I：
10.1063/1.104755
中图分类号：
O59 [应用物理学];
学科分类号：
摘要：
The Mossbauer effect of the 37.2 keV gamma-transition of Sb-121 has been employed to study the electronic configuration of Sb ions in perovskite superconducting materials. The isomer shift (IS) changes with Sb content and falls in the region of the Sb(V) valence state. The IS increases from 7.00 mm/s for BaPb0.75Sb0.25O3 to 7.25 mm/s for BaPb0.75Bi0.25O3 and to 7.70 mm/s for (Ba0.6K0.4)BiO3 compounds, indicating a high degree of covalency, corresponding to changes in the 5s(m)5p(n) hybridization.
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页码：2848 / 2850
页数：3
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