CONVERGENT BEAM ELECTRON-DIFFRACTION ANALYSIS OF LATTICE SHIFTS IN ALUMINUM NITRIDE

被引：11

作者：

CALLAHAN, DL ^{[1
]}

THOMAS, G ^{[1
]}

机构：

[1] UNIV CALIF BERKELEY,DEPT MAT SCI & MINERAL ENGN,BERKELEY,CA 94720

来源：

JOURNAL OF THE AMERICAN CERAMIC SOCIETY | 1992年 / 75卷 / 05期

关键词：

ALUMINUM NITRIDE; OXYGEN; MICROSTRUCTURE; ELECTRON DIFFRACTION; THERMAL CONDUCTIVITY;

D O I：

10.1111/j.1151-2916.1992.tb05543.x

中图分类号：

TQ174 [陶瓷工业]; TB3 [工程材料学];

学科分类号：

0805 ; 080502 ;

摘要：

Changes in lattice parameter in high-purity polycrystalline (2H(delta)) aluminum nitride due to oxygen contamination have been examined by convergent beam electron diffraction. The operative lattice distortion was determined by computer simulation to be a continuous increase in c/a ratio commensurate with constant volume as impurity concentration increases and a fine break in hexagonal symmetry. These results are consistent with the distortions associated with planar polytypoid structures at higher oxygen levels.

引用

页码：1092 / 1096

页数：5

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