STRUCTURAL DEVELOPMENT AND PHYSICAL-PROPERTIES OF AXMO2 PHASES (A=NA,K) (M=CR,MN,CO) (X LESS-THAN OR EQUAL-TO ONE)
STRUCTURAL DEVELOPMENT AND PHYSICAL-PROPERTIES OF AXMO2 PHASES (A=NA,K) (M=CR,MN,CO) (X LESS-THAN OR EQUAL-TO ONE)
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DOI：
10.1016/0025-5408(75)90166-x
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发表时间：
1975-01-01
影响因子：
5.4
通讯作者：
HAGENMULLER, P
中科院分区：
文献类型：
--
作者：
FOUASSIER, C;DELMAS, C;HAGENMULLER, P
AXMO 2（x → 1）相的结构可分为三大类。层状结构是最常见的，它们的阴离子堆积随碱金属元素的性质和插入率而变化。隧道结构只观察到锰和小的x值。方石英衍生结构表征KMO 2氧化物的小尺寸M3+阳离子。而AxCrO 2和AxMnO 2相是半导体，AxCoO 2氧化物具有金属行为，小的Co-Co距离允许t2 gorbital通过相邻八面体的公共边缘。讨论了结构对磁性能的影响。
The structures of the AXMO2(x ⩽ 1) phases may be classified in three main groups. The layer structures are the most common, their anionic packing varies with the nature of the alkali element and its insertion rate. The tunnel structures are observed only for manganese and small values of x. Cristobalite derived structures characterize the KMO2oxides for small size M3+cations. Whereas the AxCrO2and AxMnO2phases are semi-conductors, the AxCoO2oxides have a metallic behaviour, the small Co-Co distances allowing t2gorbital overlaping through the common edges of adjacent octahedra. The influence of the structure on magnetic properties is discussed.