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The electronic structure of different phases of BiFeO₃ were calculated by using density functional theory. The DFT+U and semilocal Tran-Blaha modified Becke-Johnson potential were used. DFT+U results are in good agreement with previous calculations. Our results have shown that in case of R3c, Pnma, Pn2₁a BiFeO₃ has G-antiferromagnetic ordering and C-antiferromagnetic in case of Cm space group. In...
Measurements of magnetization and electric polarization performed for the TbMnO_3 film grown onto the single crystal [100] SrTiO_3 substrate using magnetron sputtering technique exhibit series of anomalies related to the magnetic and electric ordering of the Tb^{3+} and Mn^{3+} sublattices. The detailed temperature dependences of the electric polarization and dielectric constant of the TbMnO_3 film...
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