Affiliation:
1. Institute of Physics, Kazan Federal University, Kazan 420008, Russia
Abstract
The energy level schema of the ground term of the nickel ion in NiCr2O4 was calculated. The parameters of the interaction with the electric field were determined, and the distribution pattern of the electric dipole moments over different positions of nickel in the unit cell was calculated. The model of the NiCr2O4 magnetoelectric structure at T < Tc was constructed taking into account the data on neutron scattering and the results of the electric polarization measurements. The origin of the magnetodielectric effect was attributed to the peculiarities of the ground state of the nickel ion.
Funder
Russian Science Foundation
Subject
Condensed Matter Physics,Electronic, Optical and Magnetic Materials