Publication Type:Journal Article
Source:Physical Review Letters, Volume 109, Number 24 (2012)
Keywords:Antiferromagnetics, Antiferromagnetism, Ferroelectric polarization, ferroelectricity, Multiferroics, Non-linear optical, Orthorhombic phase, Physical societies, Piezoresponse force microscopy, room temperature, strain engineering, X-ray linear dichroisms
A new orthorhombic phase of the multiferroic BiFeO3 has been created via strain engineering by growing it on a NdScO3(110) o substrate. The tensile-strained orthorhombic BiFeO3 phase is ferroelectric and antiferromagnetic at room temperature. A combination of nonlinear optical second harmonic generation and piezoresponse force microscopy revealed that the ferroelectric polarization in the orthorhombic phase is along the in-plane 110©pc directions. In addition, the corresponding rotation of the antiferromagnetic axis in this new phase was observed using x-ray linear dichroism. © 2012 American Physical Society.
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