期刊
APPLIED PHYSICS LETTERS
卷 97, 期 23, 页码 -出版社
AMER INST PHYSICS
DOI: 10.1063/1.3523352
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资金
- MEC of the Spanish Government [MAT2008-06761-C03, CSD2007-00041]
- Generalitat de Catalunya [2009-SGR-00376]
We report on the growth and characterization of epitaxial thin films of orthorhombic YMnO3. It is found that a ferroelectric polarization exists along c-axis (P-c similar to 90 nC/cm(2)) and a magnetic field induces the development of a ferroelectric polarization along a-axis (P-a) while suppressing P-c. This field-induced switching is consistent with the existence of a cycloidal magnetic order in YMnO3. This finding evidences that a noncollinear spin arrangement in thin films allows switchable electrical polarization and of tunability of their dielectric response by magnetic field. (C) 2010 American Institute of Physics. [doi:10.1063/1.3523352]
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