Microstructure of an oxide Ho2Mn2/3Ta4/3O7 with a pyrochlore-related structure

被引：8

作者：

Nakano, H ^{[1
]}

Kamegashira, N

机构：

[1] Ryukoku Univ, Electron Microscope Lab, Otsu, Shiga 5202194, Japan

[2] Toyohashi Univ Technol, Dept Mat Sci, Toyohashi, Aichi 4418580, Japan

来源：

MATERIALS RESEARCH BULLETIN | 2000年 / 35卷 / 10期

关键词：

oxides; X-ray diffraction; electron diffraction; electron microscopy; defects;

D O I：

10.1016/S0025-5408(00)00370-6

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

A complex oxide Ho2Mn2/3Ta4/3O7 was synthesized in an Ar atmosphere containing 1% H-2 at 1523 K. The compound was structurally characterized using X-ray diffraction (XRD) and transmission electron microscopy (TEM). Its structure consisted of a trigonal basic cell and a super cell with an incommensurate nature. The incommensurate nature of the superstructure was confirmed to have orientation anomalies appearing along the c*- and b*-directions in the super-cell reflections. Wavy moire-like images were observed in the dark-field images from reflections exhibiting the orientation anomalies. (C) 2000 Elsevier Science Ltd. All rights reserved.

引用

页码：1631 / 1641

页数：11

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