Mn₃TeO₆- a new multiferroic material with two magnetic substructures

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. This could open new ways of manipulating the ferroelectric polarization in a multiferroic material. (© 2015 WILEY‐VCH Verlag GmbH &Co. KGaA, Weinheim)

Non-collinear magnetic structure of manganese quadruple perovskite CdMn7O12

“…the inverse Dzyaloshinskii-Moriya interaction2, the exchange striction3 or the spin current4 and d  −  p hybridization effect56. The electric polarization ( P ) in these materials is, however, usually smaller than in conventional ferroelectrics and the magnetic transition temperature not very high7. Hence, the observation of a comparably large P of 2870 μ C/m 2 in single crystalline CaMn 7 O 12 has generated intense interest in this series of manganites891011121314151617.…”

Exploring the Corundum Structure as a Host for Colored Compounds – Synthesis, Structures, and Optical Studies of (MM′)3TeO6 (M = Mg, Mn, Co, Ni, Zn; M′ = Mg, Mn, Co, Ni, Cu)

“…Thus, the compounds Mg 3 TeO 6 and Mn 3 TeO 6 are isostructural, and are in the centrosymmetric space group ( R 3), Ni 3 TeO 6 is non‐centrosymmetric ( R 3), and Zn 3 TeO 6 and Co 3 TeO 6 are centrosymmetric ( C 2/ c ) and also have different coordination environments (octahedral, square pyramidal, and tetrahedral) for the Zn/Co ions. Of these, Mn 3 TeO 6 has been investigated for possible multiferroic behavior, and Ni 3 TeO 6 exhibits spontaneous polarization under an applied field (ferroelectric behavior) . In this paper, we describe the syntheses and structures of new colored inorganic oxides of the (MM′) 3 TeO 6 family as well as the effects of transition‐metal substitution.…”

Spin‐driven pyroelectricity in Ni3TeO6 without ferroelectric signatures of the transition at Néel temperature

“…The origin of its polarization is still under debate [14][15][16]. Spin-inducedferroelectricity was recently discovered in polycrystalline Mn 3 TeO 6 [17] À a compound where a complex incommensurate spiral magnetic structure develops at low temperature [18]. Ferroelectricity is closely related to this spiral spin structure.…”

“…Ferroelectricity is closely related to this spiral spin structure. Regarding this complex magnetic structure, both above mentioned mechanisms (ii) and (iii) are in principle able to explain the spin-induced FE in Mn 3 TeO 6 [17]. Finally, Ni 3 TeO 6 (M ¼ Ni) crystallizes in a non-centrosymmetric structure (space group R3) [19,20].…”