RamanscatteringstudyofphasetransitioninLu2O3–Ta2O5

被引：1

作者：

王小飞 ^{[1
,2
]}

邢雪 ^{[1
,2
]}

张庆礼 ^{[1
]}

尤静林 ^{[3
]}

伍俊 ^{[3
]}

张德明 ^{[1
]}

孙彧 ^{[1
]}

孙敦陆 ^{[1
]}

殷绍唐 ^{[1
]}

机构：

[1] The Key Laboratory of Photonic Devices and Materials,Anhui Institute of Optics and Fine Mechanics,Chinese Academy of Sciences

[2] Graduate University of Chinese Academy of Sciences

[3] Shanghai University,Shanghai Key Laboratory of Modern Metallurgy & Materials Processing

来源：

Chinese Physics B | 2015年 / 09期

关键词：

LuTaO4; phase transition; Raman scattering; x-ray diffraction;

D O I：

暂无

中图分类号：

O436.2 [吸收与散射];

学科分类号：

070207 ; 0803 ;

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?C and 1872?C, the polycrystalline is a mixture of M-LuTaO4 and Lu3TaO7(F m3m)when it is prepared at 1830?C, and a mixture of M-LuTaO4(B112/b) and Lu3 Ta O7(Fm3m) when it is prepared at above 1872?C. The sample melts at a temperature of 2050?C. The phase transition of the sample prepared at 2050?C was also investigated by the high-temperature Raman spectra, and the result indicates that no phase transition occurs between room temperature and 1400?C, which is consistent with the results from the x-ray diffraction.

引用

页码：557 / 560

页数：4

共 5 条

[1] Calculating Hamiltonian parameters for Yb3+ in a low-symmetry lattice site, and fitting the structure and levels of Yb3+:RETaO4 (RE = Gd, Y, and Sc) [J].

Zhang Qing-Li ;

Ning Kai-Jie ;

Ding Li-Hua ;

Liu Wen-Peng ;

Sun Dun-Lu ;

Jiang Hai-He ;

Yin Shao-Tang .

CHINESE PHYSICS B, 2013, 22 (06)

[2] Development of novel scintillator crystals [J].

Nikl, Martin ;

Yoshikawa, Akira ;

Vedda, Anna ;

Fukuda, Tsuguo .

JOURNAL OF CRYSTAL GROWTH, 2006, 292 (02) :416-421

[3]

X-ray excited charge transfer luminescence of ytterbium-containing aluminium garnets[J] . N. Guerassimova,N. Garnier,C. Dujardin,A.G. Petrosyan,C. Pedrini.Chemical Physics Letters . 2001 (3)

[4] Crystal structure of the high-pressure modification of NdTaO4 [J].

Titov, YA ;

Sych, AM ;

Sokolov, AN ;

Kapshuk, AA ;

Markiv, VY ;

Belyavina, NM .

JOURNAL OF ALLOYS AND COMPOUNDS, 2000, 311 (02) :252-255

[5] SOLID-STATE CHEMISTRY AND LUMINESCENCE OF X-RAY PHOSPHORS [J].

ISSLER, SL ;

TORARDI, CC .

JOURNAL OF ALLOYS AND COMPOUNDS, 1995, 229 (01) :54-65

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