Structural and magnetic characterization of chiral magnetic oxides of MMoTeO₆ (M=Mn, Co) family

Chiral magnetic oxides are subjects of strong interest due to two reasons: (a) There is the possibility of formation of non-collinear spin texture due to interplay between Dzyalloshinskii-Moriya interaction and uniform exchange interaction; (b) multiferroic properties due to broken space inversion symmetry and insulating behavior. In other words, there is a possibility of formation of novel magnetic textures and their manipulation using an external electric field in chiral magnetic oxides. With such hypotheses, we are investigating the chiral magnetic oxides of the MMoTeO₆ (M=Mn, Co) family. Our initial structural and magnetic characterization indicate the presence of non-collinear magnetic structure and magnetodielectric coupling in CoMoTeO₆ and MnMoTeO₆. I will present results of Raman scattering, dc magnetization, ac magnetic susceptibility, and dielectric measurements on MnMoTeO₆ and CoMoTeO₆.