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Title: A complete strain–temperature phase diagram for BiFeO3 films on SrTiO3 and LaAlO3 (0 0 1) substrates

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.
 [1] ;  [1] ;  [1] ;  [2] ;  [1] ;  [1]
  1. Oak Ridge National Laboratory
  2. Ames Laboratory
Publication Date:
OSTI Identifier:
Report Number(s):
IS-J 8218
Journal ID: ISSN 0022-3727
DOE Contract Number:
Resource Type:
Journal Article
Resource Relation:
Journal Name: Journal of Physics. D, Applied Physics; Journal Volume: 47; Journal Issue: 3
IOP Publishing
Research Org:
Ames Laboratory (AMES), Ames, IA (United States)
Sponsoring Org:
USDOE Office of Science (SC)
Country of Publication:
United States