Multiferroic Properties of CaMn$_7$O$_{12}$

Details Multiferroic Properties of CaMn$_7$O$_{12}$ Multiferroic Properties of CaMn$_7$O$_{12}$

2011-01-12

arxiv.org/abs/1101.2276v4

Physical Review B 84, 1774413 (2011)

Physics

Condensed Matter

Materials Science

5 pages, 4 figures. To be published in PRB

Scientific paper

10.1103/PhysRevB.84.174413

We report that CaMn$_7$O$_{12}$ is a new magnetic multiferroic material. The appearance of a ferroelectric polarization coinciding with the magnetic phase transition ($\sim90$ K) suggests the presence of ferroelectricity induced by magnetism, further confirmed by its strong magnetoelectric response. With respect to other known magnetic multiferroics, CaMn$_7$O$_{12}$ displays attractive multiferroic properties, such as a high ferroelectric critical temperature and large polarization. More importantly, these results open a new avenue to search for magnetic multiferroics in the catalogue of doped oxides.

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