Dielectric Properties of Layered MnGaInSe4 Single Crystals in an Alternating Electric Field

Abstract

In this paper we present the results of studies into the frequency and temperature dependences of the dielectric loss tangent and the real and imaginary parts of the permittivity in MnGaInSe₄ single crystals in an alternating electric field. The main type of dielectric losses in MnGaInSe₄ single crystals in the frequency range of 8 × 10³–3 × 10⁵ Hz is established to be electrical conductivity losses, while the conductivity is characterized by the zone-hopping mechanism. The activation energies of current carriers of single crystals are determined. The real and imaginary parts of the permittivity are found to undergo significant dispersion, which is of a relaxation nature.