Complex magnetic incommensurability and electronic charge transfer through the ferroelectric transition in multiferroic Co₃TeO₆.

ABSTRACT: Polarized and unpolarized neutron diffractions have been carried out to investigate the nature of the magnetic structures and transitions in monoclinic Co₃TeO₆. As the temperature is lowered below 26 K long range order develops, which is fully incommensurate (ICM) in all three crystallographic directions. Below 19.5 K additional commensurate magnetic peaks develop, consistent with the Γ₄ irreducible representation, along with a splitting of the ICM peaks along the h direction which indicates that there are two separate sets of magnetic modulation vectors. Below 18 K, this small additional magnetic incommensurability disappears, ferroelectricity develops, an additional commensurate magnetic structure consistent with Γ₃ irreducible representation a

SUBMITTER: Lee CH 

PROVIDER: S-EPMC5527072 | biostudies-literature | 2017 Jul

REPOSITORIES: biostudies-literature