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Author Klie, R. F. ♦ Browning, N. D.
Sponsorship (US)
Source United States Department of Energy Office of Scientific and Technical Information
Content type Text
Publisher The American Physical Society
Language English
Subject Keyword CLASSICAL AND QUANTUM MECHANICS, GENERAL PHYSICS ♦ BONDING ♦ CATIONS ♦ GRAIN BOUNDARIES ♦ HEATING ♦ OXYGEN ♦ PHYSICS ♦ SEGREGATION ♦ VACANCIES
Abstract We have examined the atomic structure, composition, and bonding at a nominally undoped 58{sup o} [001] tilt grain boundary in SrTiO{sub 3} in order to develop an understanding of the control that the grain boundary plane exerts over the bulk properties. Room temperature and in situ heating experiments show that there is a segregation of oxygen vacancies to the grain boundary that is increased at elevated temperatures and is independent of the cation arrangement. These measurements provide direct support for recent experimental and theoretical predictions that nonstoichiometry, and in particular oxygen vacancies, are responsible for the widely observed grain boundary properties.
ISSN 00036951
Educational Use Research
Learning Resource Type Article
Publisher Date 2000-12-04
Publisher Place United States
Journal Applied Physics Letters
Volume Number 77
Issue Number 23


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