Giant improper ferroelectricity in the ferroaxial magnet CaMn 7O 12

Giant improper ferroelectricity in the ferroaxial magnet CaMn 7O 12

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In rhombohedral CaMn 7O 12, an improper ferroelectric polarization of magnitude 2870μCm -2 is induced by an incommensurate helical magnetic structure that evolves below T N1=90K. The electric polarization was found to be constrained to the high symmetry threefold rotation axis of the crystal structu...

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Bibliographic Details
Main Authors:	Johnson, R, Chapon, L, Khalyavin, D, Manuel, P, Radaelli, P, Martin, C
Format:	Journal article
Language:	English
Published:	2012

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