Semiconductor-metal transition in defect lithium cobaltite

被引：37

作者：

Kellerman, DG

Galakhov, VR

Semenova, AS

Blinovskov, YN

Leonidova, ON

机构：

[1] Russian Acad Sci, Ural Div, Inst Solid State Chem, Ekaterinburg 620219, Russia

[2] Russian Acad Sci, Ural Div, Inst Met Phys, Ekaterinburg 620219, Russia

来源：

PHYSICS OF THE SOLID STATE | 2006年 / 48卷 / 03期

基金：

俄罗斯基础研究基金会;

关键词：

D O I：

10.1134/S106378340603022X

中图分类号：

O469 [凝聚态物理学];

学科分类号：

070205 ;

摘要：

The magnetic susceptibility, electrical conductivity, and x-ray photoelectron and x-ray absorption spectra of defect lithium cobaltites of the general formula Li1-xCoO2 are investigated. It is found that, for lithium cobaltites with x > 0.25, the magnetic susceptibility increases abruptly and the conductivity type changes at T similar to 150 K. The assumption is made that the semiconductor-metal transition in defect lithium cobaltite is caused by the increase in the diffusion mobility of lithium ions with an increase in the temperature when there is a correlation between spatial distributions of lithium vacancies and "electron" holes.

引用

收藏

页码：548 / 556

页数：9

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