標題: Magnetism-induced ferroelectric polarization in the c-axis-oriented orthorhombic HoMnO3 thin films
作者: Lin, T. H.
Hsieh, C. C.
Luo, C. W.
Lin, J. -Y.
Sun, C. P.
Yang, H. D.
Hsu, C. -H.
Chu, Y. H.
Wu, K. H.
Uen, T. M.
Juang, J. Y.
材料科學與工程學系
電子物理學系
物理研究所
Department of Materials Science and Engineering
Department of Electrophysics
Institute of Physics
公開日期: 15-Nov-2009
摘要: The magnetism-induced ferroelectricity in the E-type orthorhombic HoMnO3 (o-HMO) films grown on Nb-doped and undoped SrTiO3(001) substrates was studied. The temperature dependent magnetization in these films evidently exhibits an antiferromagnetic ordering around 44 K and an anomalous second magnetic ordering along the c-axis near 35 K. Interestingly, at this anomalous transition temperature, an associated ferroelectric polarization was probed by the P-E hysteresis measurements, indicating the intimated coupling between the ferroelectric response and the reordering of Mn spins, which has never been disclosed previously by dielectric constant measurements. (C) 2009 American Institute of Physics. [doi: 10.1063/1.3260241]
URI: http://dx.doi.org/10.1063/1.3260241
http://hdl.handle.net/11536/149865
ISSN: 0021-8979
DOI: 10.1063/1.3260241
期刊: JOURNAL OF APPLIED PHYSICS
Volume: 106
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