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ORIENTATIONAL ORDERING IN SPATIALLY DISORDERED DIPOLAR SYSTEMS

TitleORIENTATIONAL ORDERING IN SPATIALLY DISORDERED DIPOLAR SYSTEMS
Publication TypeJournal Article
Year of Publication1995
AuthorsAyton, G, Gingras, MJP, Patey, GN
JournalPhysical Review Letters
Volume75
Pagination2360-2363
Date PublishedSep
Type of ArticleArticle
ISBN Number0031-9007
KeywordsCOMPUTER-SIMULATION, ELECTROSTATIC SYSTEMS, FLIGHTS, LONG-RANGE INTERACTIONS, models, PERIODIC BOUNDARY-CONDITIONS, RANDOM ANISOTROPY, RANDOM LEVY, SPIN-GLASSES
Abstract

This Letter addresses basic questions concerning ferroelectric order in positionally disordered dipolar materials. Three models distinguished by dipole vectors that have one, two, or three components are studied by computer simulation. Randomly frozen and dynamically disordered media are considered. It is shown that ferroelectric order is possible in spatially random systems, but that its existence is very sensitive to the dipole vector dimensionality and the motion of the medium. A physical analysis of our results provides significant insight into the nature of ferroelectric transitions.

URL<Go to ISI>://A1995RU81100027