中国物理B ›› 2015, Vol. 24 ›› Issue (12): 126301-126301.doi: 10.1088/1674-1056/24/12/126301

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Raman phonons in multiferroic FeVO4 crystals

张安民a, 刘凯a, 籍建葶a, 何长振b, 田勇a, 金峰a, 张清明a   

  1. a Department of Physics, Beijing Key Laboratory of Opto-Electronic Functional Materials and Micro-nano Devices, Renmin University of China, Beijing 100872, China;
    b State Key Laboratory of Structural Chemistry, Fujian Institute of Research on the Structure of Matter, Chinese Academy of Sciences, Fuzhou 350002, China
  • 收稿日期:2015-09-27 修回日期:2015-10-08 出版日期:2015-12-05 发布日期:2015-12-05
  • 通讯作者: Zhang Qing-Ming E-mail:qmzhang@ruc.edu.cn
  • 基金资助:

    Project supported by the National Basic Research Program of China (Grant No. 2012CB921701), the National Natural Science Foundation of China (Grant Nos. 11174367 and 11004243), the China Postdoctoral Science Foundation, the Fundamental Research Funds for the Central Universities, and the Research Funds of Renmin University of China (Grant Nos. 10XNI038, 14XNLF06, and 14XNLQ03).

Raman phonons in multiferroic FeVO4 crystals

Zhang An-Min (张安民)a, Liu Kai (刘凯)a, Ji Jian-Ting (籍建葶)a, He Chang-Zhen (何长振)b, Tian Yong (田勇)a, Jin Feng (金峰)a, Zhang Qing-Ming (张清明)a   

  1. a Department of Physics, Beijing Key Laboratory of Opto-Electronic Functional Materials and Micro-nano Devices, Renmin University of China, Beijing 100872, China;
    b State Key Laboratory of Structural Chemistry, Fujian Institute of Research on the Structure of Matter, Chinese Academy of Sciences, Fuzhou 350002, China
  • Received:2015-09-27 Revised:2015-10-08 Online:2015-12-05 Published:2015-12-05
  • Contact: Zhang Qing-Ming E-mail:qmzhang@ruc.edu.cn
  • Supported by:

    Project supported by the National Basic Research Program of China (Grant No. 2012CB921701), the National Natural Science Foundation of China (Grant Nos. 11174367 and 11004243), the China Postdoctoral Science Foundation, the Fundamental Research Funds for the Central Universities, and the Research Funds of Renmin University of China (Grant Nos. 10XNI038, 14XNLF06, and 14XNLQ03).

摘要:

Multiferroic materials are promising candidates for next-generation multi-functional devices, because of the coexistence of multi-orders and the coupling between the orders. FeVO4 has been confirmed to be a multiferroic compound, since it exhibits both ferroelectricity and antiferromagnetic ordering at low temperatures. In this paper, we have performed careful Raman scattering measurements on high-quality FeVO4 single crystals. The compound has a very rich phonon structure due to its low crystal symmetry (P-1) and at least 47 Raman-active phonon modes have been resolved in the low and hightemperature spectra. Most of the observed modes are well assigned with aid of first-principles calculations and symmetry analysis. The present study provides an experimental basis for exploring spin-lattice coupling and the mechanism of multiferroicity in FeVO4

关键词: Raman scattering, phonon assignment multiferroics

Abstract:

Multiferroic materials are promising candidates for next-generation multi-functional devices, because of the coexistence of multi-orders and the coupling between the orders. FeVO4 has been confirmed to be a multiferroic compound, since it exhibits both ferroelectricity and antiferromagnetic ordering at low temperatures. In this paper, we have performed careful Raman scattering measurements on high-quality FeVO4 single crystals. The compound has a very rich phonon structure due to its low crystal symmetry (P-1) and at least 47 Raman-active phonon modes have been resolved in the low and hightemperature spectra. Most of the observed modes are well assigned with aid of first-principles calculations and symmetry analysis. The present study provides an experimental basis for exploring spin-lattice coupling and the mechanism of multiferroicity in FeVO4

Key words: Raman scattering, phonon assignment multiferroics

中图分类号:  (Measurements)

  • 63.20.dd
63.20.dk (First-principles theory) 75.85.+t (Magnetoelectric effects, multiferroics) 78.30.Hv (Other nonmetallic inorganics)