1210.3706 (Si-Da Li et al.)

Promising ferrimagnetic double perovskite oxides towards high spin
polarization at high temperature    [PDF]

Si-Da Li, Peng Chen, Bang-Gui Liu

We predict through our first-principles calculations that four double perovskite oxides of Bi2ABO6 (AB = FeMo, MnMo, MnOs, CrOs) are half-metallic ferrimagnets. Our calculated results shows that the four optimized structures have negative formation energy, from -0.42 to -0.26 eV per formula unit, which implies that they could probably be realized. In the case of Bi2FeMoO6, the half-metallic gap and Curie temperature are predicted to reach to 0.71 eV and 670 K, respectively, which indicates that high spin polarization could be kept at high temperature. It is believed that at least some of them could be synthesized soon and would prove useful for spintronic applications.

View original: http://arxiv.org/abs/1210.3706