Orthorhombic BiFeO3

Publication Type:

Journal Article

Authors:

J.C. Yang; Q. He; S.J. Suresha; C.Y. Kuo; C.Y. Peng; R.C. Haislmaier; M.A. Motyka; G. Sheng; C. Adamo; H.J. Lin; Z. Hu; L. Chang; L.H. Tjeng; E. Arenholz; N.J. Podraza; M. Bernhagen; R. Uecker; D.G. Schlom; V. Gopalan; L.Q. Chen; C.T. Chen; Ramamoorthy Ramesh; Y.H. Chu

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

Abstract:

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.

Notes:

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