Raman scattering study of phase transition in Lu2O3-Ta2O5

被引：2

作者：

Wang Xiao-Fei ^{[1
,2
]}

Xing Xue ^{[1
,2
]}

Zhang Qing-Li ^{[1
]}

You Jing-Lin ^{[3
]}

Wu Jun ^{[3
]}

Zhang De-Ming ^{[1
]}

Sun Yu ^{[1
]}

Sun Dun-Lu ^{[1
]}

Yin Shao-Tang ^{[1
]}

机构：

[1] Chinese Acad Sci, Anhui Inst Opt & Fine Mech, Key Lab Photon Devices & Mat, Hefei 230031, Peoples R China

[2] Chinese Acad Sci, Grad Univ, Beijing 100049, Peoples R China

[3] Shanghai Univ, Shanghai Key Lab Modern Met & Mat Proc, Shanghai 200072, Peoples R China

来源：

CHINESE PHYSICS B | 2015年 / 24卷 / 09期

基金：

中国国家自然科学基金;

关键词：

LuTaO4; phase transition; Raman scattering; x-ray diffraction; X-RAY PHOSPHORS; LUMINESCENCE; TEMPERATURE; SYSTEM;

D O I：

10.1088/1674-1056/24/9/098104

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

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 degrees C and 1872 degrees C, the polycrystalline is a mixture of M'-LuTaO4 and Lu3TaO7 (Fm (3) over barm) when it is prepared at 1830 degrees C, and a mixture of M-LuTaO4 (B112/b) and Lu3TaO7 (Fm (3) over barm) when it is prepared at above 1872 degrees C. The sample melts at a temperature of 2050 degrees C. The phase transition of the sample prepared at 2050 degrees C was also investigated by the high-temperature Raman spectra, and the result indicates that no phase transition occurs between room temperature and 1400 degrees C, which is consistent with the results from the x-ray diffraction.

引用

页数：4

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