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. 2012 Dec 14;109(24):247606.
doi: 10.1103/PhysRevLett.109.247606. Epub 2012 Dec 14.

Orthorhombic BiFeO3

J C Yang  1 , 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, R Ramesh, Y H Chu
Affiliations

Orthorhombic BiFeO3

J C Yang et al. Phys Rev Lett. .

Abstract

A new orthorhombic phase of the multiferroic BiFeO3 has been created via strain engineering by growing it on a NdScO(3)(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.

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