A complete strain–temperature phase diagram for BiFeO3 films on SrTiO3 and LaAlO3 (0 0 1) substrates
- Oak Ridge National Laboratory
- Ames Laboratory
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.
- Research Organization:
- Ames Lab., Ames, IA (United States)
- Sponsoring Organization:
- USDOE Office of Science (SC)
- DOE Contract Number:
- DE-AC02-07CH11358
- OSTI ID:
- 1134606
- Report Number(s):
- IS-J 8226
- Journal Information:
- Journal of Physics. D, Applied Physics, Vol. 47, Issue 3; ISSN 0022-3727
- Publisher:
- IOP Publishing
- Country of Publication:
- United States
- Language:
- English
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A complete strain temperature phase diagram for BiFeO3 films on SrTiO3 and LaAlO3 (0 0 1)