IOP Publishing, Journal of Physics: Condensed Matter, 34(23), p. 342202, 2011
DOI: 10.1088/0953-8984/23/34/342202
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BiFeO3 (BFO) multiferroic oxide has a complex phase diagram that can be mapped by using appropriately substrate-induced strain in epitaxial films. By using Raman spectroscopy, we conclusively show that films of the so-called supertetragonal T-BFO phase, stabilized under compressive strain, display a reversible temperature-induced phase transition at about 100 degrees C, and thus close to room temperature.