Effect of misfit strain on the multiferroism and nonlinear optical response in epitaxial PbVO3 thin films

Sheng Ju; Tian-Yi Cai
December 2008
Applied Physics Letters;12/22/2008, Vol. 93 Issue 25, p251904
Academic Journal
Based on density functional theory (the generalized gradient approximation plus on-site Coulomb repulsion method), we investigate the misfit strain dependence of multiferroism and second-harmonic generation (SHG) in epitaxial PbVO3 thin films. G-type antiferromagnetic ordering, large polar distortion, and significant SHG susceptibilities are revealed in PbVO3 over a wide range of substrates. In particular, the low frequency SHG susceptibility reaches as high as 300×10-9 esu in all the cases we considered, providing solid evidence of its potential application in nonlinear optoelectronic device.


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