VALENCE STATES OF LEAD, THALLIUM AND COPPER IN SUPERCONDUCTING CUPRATES BY XANES

被引：49

作者：

STUDER, F ^{[1
]}

BOURGAULT, D ^{[1
]}

MARTIN, C ^{[1
]}

RETOUX, R ^{[1
]}

MICHEL, C ^{[1
]}

RAVEAU, B ^{[1
]}

DARTYGE, E ^{[1
]}

FONTAINE, A ^{[1
]}

机构：

[1] LAB UTILISAT RAYONNMENT ELECTROMAGNET,F-91405 ORSAY,FRANCE

来源：

PHYSICA C | 1989年 / 159卷 / 05期

关键词：

Ceramic Materials - Lead Compounds - Spectroscopy; Absorption; -; Spectroscopy; X-Ray;

D O I：

10.1016/0921-4534(89)91292-6

中图分类号：

O59 [应用物理学];

学科分类号：

摘要：

This paper deals with X-ray absorption spectroscopy at thallium and lead LIII edges and copper K edge of a lead cuprate, Pb2Sr2Ca0.5Y0.5Cu3O8, and three lead substituted thallium compounds, (Tl0.5Pb0.5)Sr2CuO5 (1201), (Tl0.5Pb0.5)Sr2CaCu2O7 (1212) and (Tl0.5Pb0.5)Sr2Ca2Cu3O9 (1223) which correspond to odd layer members of the intergrowth. According to the possible valence for thallium and lead (Tl(I), Tl(III), Pb(II) and Pb(IV)), the number of holes in the (CuO2)2- planes can shift from 1 to 0.16.

引用

页码：609 / 615

页数：7

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