We employ density functional theory using the modified Becke-Johnson (mBJ) approach to investigate the electronic and magneto-optical properties of N-doped NaTaO3. The mBJ results reveal a half metallic nature of NaTaO2N, in contrast to results obtained by the generalized gradient approximation. We find a giant polar Kerr rotation of 2.16∘ at 725 nm wave length (visible region), which is high as compared to other half metallic perovskites as well as to the prototypical half metal PtMnSb.
@article{arxiv.1311.3407,
title = {Half-metallicity and giant magneto-optical Kerr effect in N-doped NaTaO$_3$},
author = {Y. Saeed and N. Singh and U. Schwingenschlögl},
journal= {arXiv preprint arXiv:1311.3407},
year = {2013}
}