Examination of ferroelectric and magnetic properties of hexagonal ErFeO3 thin films
Examination of ferroelectric and magnetic properties of hexagonal ErFeO3 thin films
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DOI：
10.7567/jjap.54.10na10
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发表时间：
2015-09
影响因子：
1.5
通讯作者：
H. Yokota;Tomoya Nozue;S. Nakamura;M. Fukunaga;A. Fuwa
中科院分区：
文献类型：
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作者：
H. Yokota;Tomoya Nozue;S. Nakamura;M. Fukunaga;A. Fuwa
采用脉冲激光沉积法制备了六方相ErFeO_3(h-ErFeO_3)薄膜。X射线衍射实验证实，成功地制备了c轴取向的单相h-ErFeO_3薄膜。室温下的D-E磁滞回线测量证实了其铁电性，并估算其自发极化强度为200nC/cm2。在120K以下出现了较弱的铁磁性，介电常数开始表现出磁场依赖性。这些观察结果表明，h-ErFeO_3薄膜中铁电性和弱铁磁性共存。
Hexagonal ErFeO3 (h-ErFeO3) thin films were fabricated by a pulsed laser deposition method. X-ray diffraction experiments confirmed that single-phase h-ErFeO3 thin films were successfully obtained and were c axis-oriented. Ferroelectricity was confirmed by D–E hysteresis loop measurement at room temperature and the magnitude of spontaneous polarization was estimated to be 200 nC/cm2. A weak ferromagnetism appeared below 120 K and dielectric constants started to exhibit magnetic field dependence. These observations demonstrate the coexistence of ferroelectricity and weak ferromagnetism in h-ErFeO3 thin films.