A complete strain-temperature phase diagram for BiFeO3 films on SrTiO3 and LaAlO3 (001) substrates

TitleA complete strain-temperature phase diagram for BiFeO3 films on SrTiO3 and LaAlO3 (001) substrates
Publication TypeJournal Article
Year of Publication2014
AuthorsSiemons W, Beekman C, MacDougall GJ, Zarestky JL, Nagler SE, Christen HM
Journal TitleJournal of Physics D-Applied Physics
Volume47
Pages034011
Date Published01
Type of ArticleArticle
ISBN Number0022-3727
Accession NumberWOS:000329116000012
Keywordsmechanism, STABILIZATION, thin-films, transition
Abstract

BiFeO3 has a complex phase diagram as function of both strain and temperature, undergoing a morphotropic phase transformation under large compressive strain. Epitaxial films, grown by pulsed laser deposition, are ideal for the study of the intricate phase coexistence between multiple polymporphs. Three polymorphs have been identified in the literature. They are carefully described in this paper (labelled R', T', and S'). As both ferroelectric and magnetic properties are typically strongly linked to structural distortions, the structural, ferroelectric and magnetic transition temperatures are expected to differ between the R', T' and S' polymorphs. In this paper we present a complete strain-temperature phase diagram for each of the polymorphs.

URL<Go to ISI>://WOS:000329116000012
DOI10.1088/0022-3727/47/3/034011