First-principles study of ferroelectricity induced by p-d hybridization in ferrimagnetic NiFe2O4

Un-Gi Jong, Chol-Jun Yu, Yong-Su Park +1

We investigate the ferrimagnetism and ferroelectricity of bulk NiFe${}_2$O${}_4$ with tetragonal $P{4}_{1}22$ ~symmetry by means of density functional calculations using generalized gradie…