The interrelation of magnetic and dielectric properties ofCoxMn1 − xS solid solutions

Abstract

Magnetization of the cation-substitutedCoxMn1 − xS sulfides upon cooling in zero and 100 Oe magnetic fields at the temperatures4–300 K has been measured. Permittivity of these materials at frequencies from 1to 100 kHz in magnetic and dc electric fields in the 100–300 K temperaturerange has been determined. Change in the dielectric permittivity under anexternal magnetic field is found to have a maximum in the temperature ranges ofT1 ∼ (110–120 K) andT2 ∼ (230–250 K). Formation of spontaneous magnetic moment and the rise ofmagnetic susceptibility are revealed at the same temperatures in theCoxMn1 − xS solid solutions. Features of the magnetoelectric properties of the sulfides have beenexplained by orbital ordering.