DISLOCATIONS IN BATIO3 CERAMICS

被引：39

作者：

EIBL, O ^{[1
]}

PONGRATZ, P ^{[1
]}

SKALICKY, P ^{[1
]}

SCHMELZ, H ^{[1
]}

机构：

[1] SIEMENS AG,CORP RES & DEV,D-8000 MUNICH 83,FED REP GER

来源：

PHYSICA STATUS SOLIDI A-APPLIED RESEARCH | 1988年 / 108卷 / 02期

关键词：

Burgers Vectors - Non Stoichiometric Materials;

D O I：

10.1002/pssa.2211080203

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

Bulk dislocations in cubic and tetragonal BaTiO3 were analysed by TEM. Dislocations with Burgers vectors of the type b = a{100} lying along {010} directions are found in stoichiometric material whereas 72° dislocations are predominant in nonstoichiometric material. Stacking faults (extended compositional defects in this structure) are observed on {100} planes. Their role in (TiO2)-nonstoichiometry is discussed. The dislocation contrast is analysed by image matching for both the cubic and the piezoelectric tetragonal phase. The difference in strong-beam image contrast is so small that it would not be detectable experimentally.

引用

页码：495 / 502

页数：8

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