Structure and properties of (CaOH)kCoO2

被引：5
|
作者：
Isobe, M. [1 ]
Shizuya, M. [1 ]
Takayama-Muromachi, E. [1 ]
机构：
[1] Natl Inst Mat Sci, Tsukuba, Ibaraki 305044, Japan
来源：
PHYSICA C-SUPERCONDUCTIVITY AND ITS APPLICATIONS | 2007年 / 463卷 / SUPPL.期
关键词：
misfit-layer compound; cobaltite; thermoelectric power;
D O I：
10.1016/j.physc.2007.04.321
中图分类号：
O59 [应用物理学];
学科分类号：
摘要：
We recently discovered two poly-type structural phases of the new cobalt-oxide system, (CaOH)(1.14)CoO2 and (Ca0.85OH)(1.16)CoO2. The former phase is an orthorhombic form, while the latter phase is monoclinic one. Both the phases have layered structure that consists of CdI2-type CoO2 triangle-lattice layers and rock-salt-type CaOH double-atomic-plane slabs, alternately stacked along the c-axis. The two subcells have incommensurate periodicity along the a-axis, resulting in a modulated crystal structure. Each structure of the two phases is composed by different stacking manner of the CoO2 blocks. The monoclinic phase accommodates hole-carriers generated by lattice defects of the Ca ions. (C) 2007 Elsevier B.V. All rights reserved.
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页码：178 / 181
页数：4
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