中国物理B ›› 2015, Vol. 24 ›› Issue (9): 98104-098104.doi: 10.1088/1674-1056/24/9/098104

• INTERDISCIPLINARY PHYSICS AND RELATED AREAS OF SCIENCE AND TECHNOLOGY • 上一篇    下一篇

Raman scattering study of phase transition in Lu2O3-Ta2O5

王小飞a b, 邢雪a b, 张庆礼a, 尤静林c, 伍俊c, 张德明a, 孙彧a, 孙敦陆a, 殷绍唐a   

  1. a The Key Laboratory of Photonic Devices and Materials, Anhui Institute of Optics and Fine Mechanics, Chinese Academy of Sciences, Hefei 230031, China;
    b Graduate University of Chinese Academy of Sciences, Beijing 100049, China;
    c Shanghai University, Shanghai Key Laboratory of Modern Metallurgy & Materials Processing, Shanghai 200072, China
  • 收稿日期:2015-02-03 修回日期:2015-03-12 出版日期:2015-09-05 发布日期:2015-09-05
  • 基金资助:
    Project supported by the National Natural Science Foundation of China (Grant Nos. 51172236, 51272254, 51102239, and 61205173) and the National Science Fund for Distinguished Young Scholars, China (Grant No. 61405206).

Raman scattering study of phase transition in Lu2O3-Ta2O5

Wang Xiao-Fei (王小飞)a b, Xing Xue (邢雪)a b, Zhang Qing-Li (张庆礼)a, You Jing-Lin (尤静林)c, Wu Jun (伍俊)c, Zhang De-Ming (张德明)a, Sun Yu (孙彧)a, Sun Dun-Lu (孙敦陆)a, Yin Shao-Tang (殷绍唐)a   

  1. a The Key Laboratory of Photonic Devices and Materials, Anhui Institute of Optics and Fine Mechanics, Chinese Academy of Sciences, Hefei 230031, China;
    b Graduate University of Chinese Academy of Sciences, Beijing 100049, China;
    c Shanghai University, Shanghai Key Laboratory of Modern Metallurgy & Materials Processing, Shanghai 200072, China
  • Received:2015-02-03 Revised:2015-03-12 Online:2015-09-05 Published:2015-09-05
  • Contact: Zhang Qing-Li E-mail:zql@aiofm.ac.cn
  • Supported by:
    Project supported by the National Natural Science Foundation of China (Grant Nos. 51172236, 51272254, 51102239, and 61205173) and the National Science Fund for Distinguished Young Scholars, China (Grant No. 61405206).

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摘要： The lutetium tantalate compounds obtained from Lu2O3-Ta2O5 with a molar ratio of 0.515:0.485 were studied by Raman scattering and x-ray diffraction. The results of the room temperature Raman scattering indicate that the sample has a phase transition between 1830 ℃ and 1872 ℃, the polycrystalline is a mixture of M'-LuTaO4 and Lu3TaO7 (Fm3m) when it is prepared at 1830 ℃, and a mixture of M-LuTaO4 (B112/b) and Lu3TaO7 (Fm3m) when it is prepared at above 1872 ℃. The sample melts at a temperature of 2050 ℃. The phase transition of the sample prepared at 2050 ℃ was also investigated by the high-temperature Raman spectra, and the result indicates that no phase transition occurs between room temperature and 1400 ℃, which is consistent with the results from the x-ray diffraction.

关键词: LuTaO4, phase transition, Raman scattering, x-ray diffraction

Abstract: The lutetium tantalate compounds obtained from Lu2O3-Ta2O5 with a molar ratio of 0.515:0.485 were studied by Raman scattering and x-ray diffraction. The results of the room temperature Raman scattering indicate that the sample has a phase transition between 1830 ℃ and 1872 ℃, the polycrystalline is a mixture of M'-LuTaO4 and Lu3TaO7 (Fm3m) when it is prepared at 1830 ℃, and a mixture of M-LuTaO4 (B112/b) and Lu3TaO7 (Fm3m) when it is prepared at above 1872 ℃. The sample melts at a temperature of 2050 ℃. The phase transition of the sample prepared at 2050 ℃ was also investigated by the high-temperature Raman spectra, and the result indicates that no phase transition occurs between room temperature and 1400 ℃, which is consistent with the results from the x-ray diffraction.

Key words: LuTaO4, phase transition, Raman scattering, x-ray diffraction

中图分类号:  (Phase diagrams of other materials)

  • 81.30.Dz
87.64.kp (Raman) 42.70.-a (Optical materials)