APS/Carin Cain

Figure 1: Schematic illustration of the mechanism for magnetodielectric coupling in partially antisite-disordered $La2NiMnO6$. Green: $La$; Blue: $Ni$; Red: $Mn$; Gray: Bridging $O$. The gray arrows on the O ions represent the magnetic interactions between neighboring magnetic ions. Charge transfer between the $Ni2+$ and $Mn4+$ produces a large dipole moment in the unit cell, which is suppressed by the ferromagnetic spin alignment in an applied magnetic field.