EPR studies of Li1-x(NiyCo1-y)(1+x)O-2 solid solutions

被引：36

作者：

Stoyanova, R ^{[1
]}

Zhecheva, E ^{[1
]}

Alcantara, R ^{[1
]}

Lavela, P ^{[1
]}

Tirado, JL ^{[1
]}

机构：

[1] UNIV CORDOBA,FAC CIENCIAS,LAB QUIM INORGAN,E-14004 CORDOBA,SPAIN

来源：

SOLID STATE COMMUNICATIONS | 1997年 / 102卷 / 06期

关键词：

electron paramagnetic resonance; lithium cobalt oxide; lithium nickel oxide;

D O I：

10.1016/S0038-1098(97)00008-2

中图分类号：

O469 [凝聚态物理学];

学科分类号：

070205 ;

摘要：

Ni3+ EPR measurements were used to investigate the electronic structure and ion distribution of Li1-x(NiyCo1-y)(1+x)O-2 (y = 0.13 and 0.8 less than or equal to y less than or equal to 1.0) solid solutions prepared between 450 and 800 degrees C. The data on the Ni3+ distribution were obtained from the analysis of the EPR line width. The results show that a transition from non-random to a random Ni/Co distribution in the NiyCo1-yO2 slabs occurs between 650 and 750 degrees C. Li-6 solid state MAS NMR and magnetic susceptibility measurements are in good correspondence with this interpretation. (C) 1997 Elsevier Science Ltd.

引用

页码：457 / 462

页数：6

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