Mn3TeO6 - A New Multiferroic Material with Two Magnetic Substructures
L.Zhao, Z. Hu, C.Y. Kuo, T.-W. Pi, M.-K. Wu, L.H. Tjeng, and A.C., Komarek
TL;DR
This study reports Mn3TeO6 as a new multiferroic material exhibiting two magnetic substructures, spin-induced ferroelectricity, and magnetoelectric coupling, with two magnetic transitions at low temperatures.
Contribution
It introduces Mn3TeO6 as a novel multiferroic with coexisting cycloidal and helical spin structures contributing to its properties.
Findings
Two magnetic transitions at 23 K and 21 K.
Coexistence of cycloidal and helical spin structures.
Observation of spin-induced ferroelectricity and magnetoelectric coupling.
Abstract
From magnetic susceptibility, dielectric permittivity, electric polarization and specific heat measurements, we discover spin-induced ferroelectricity and magnetoelectric coupling in Mn3TeO6 and observe two successive magnetic transitions at low temperatures. A non-ferroelectric intermediate magnetic state occurs below 23 K and a multiferroic ground state emerges below 21 K. Moreover, Mn3TeO6 is a candidate for a multiferroic material where two types of incommensurate spin structures, cycloidal and helical, coexist. Theoretically, both spin substructures may contribute to the macro electric polarization via different mechanisms.
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