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.

引用

页码：178 / 181

页数：4

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