Abstract
We report on the control of electric polarization (P) by using magnetic fields (B) in a hexaferrite having magnetic order above room temperature (RT). The material investigated is hexagonal Ba0.5Sr1.5Zn2Fe12O22, which is a nonferroelectric helimagnetic insulator in the zero-field ground state. By applying B, the system undergoes successive metamagnetic transitions, and shows concomitant ferroelectric order in some of the B-induced phases with long-wavelength magnetic structures. The magnetoelectrically induced P can be rotated 360 degrees by external B. This opens up the potential for not only RT magnetoelectric devices but also devices based on the magnetically controlled electro-optical response.
Keywords
FerroelectricityPolarization (electrochemistry)Condensed matter physicsMaterials scienceWavelengthMagnetic fieldInsulator (electricity)Electric fieldMultiferroicsTrigonal crystal systemPolarization densityMagnetic structureHexagonal crystal systemPhysicsOptoelectronicsCrystal structureDielectricMagnetizationCrystallography
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Publication Info
- Year
- 2005
- Type
- article
- Volume
- 94
- Issue
- 13
- Pages
- 137201-137201
- Citations
- 440
- Access
- Closed
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Cite This
T. Kimura,
G. Lawes,
A. P. Ramirez
(2005).
Electric Polarization Rotation in a Hexaferrite with Long-Wavelength Magnetic Structures.
Physical Review Letters
, 94
(13)
, 137201-137201.
https://doi.org/10.1103/physrevlett.94.137201
Identifiers
- DOI
- 10.1103/physrevlett.94.137201