How trivalent amphoteric dopants inBaTiO3ceramics improve reliability of capacitors
作者:
Yoed Tsur,
Clive A. Randall,
期刊:
AIP Conference Proceedings
(AIP Available online 1900)
卷期:
Volume 535,
issue 1
页码: 283-287
ISSN:0094-243X
年代: 1900
DOI:10.1063/1.1324465
出版商: AIP
数据来源: AIP
摘要:
A new hypothesis regarding the role of rare earth dopants in improving the lifetime of multilayer capacitors with base metal electrodes is presented. The hypothesis is based on the experimental findings, which have shown that the site occupancy of the important dopants is a function of the overall A/B ratio in the perovskite dielectric material. The main assumption is that deviation from A/B stoichiometry significantly controls the mobility of oxygen vacancies along the grain boundaries. ©2000 American Institute of Physics.
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