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Since LuTaO4 is a scintillator host with the highest density, it is important to investigate the structure and phase transition for its single crystal preparation. The polycrystalline formed by the mixture of Lu2O3:Ta2O5 with the molar ratio 1:1 is prepared by solid state reaction method at different temperatures. The phase transitions and structures of the polycrystalline powders are investigated by X-ray diffraction and Rietveld refinement. The results show that the polycrystalline has a single phase M'-LuTaO4 when sample is prepared at 1740 ℃, it presents a mixture phase of M'-LuTaO4 and M-LuTaO4 at 1800 ℃, and it displays a single phase M-LuTaO4 at 1840 ℃. The sample is melted when the calcined temperature is 2058 ℃, the melt is quenched and the polycrystalline is the mixture of M-LuTaO4, Lu3TaO7 and Ta2O5, whose structural parameters, including the lattice parameters, atomic fraction coordinates, etc. are obtained by Rietveld refinement to their X-ray diffraction pattern, and the results show their weight ratios are 78.1%, 18.9% and 3.0%, respectively. These results are valuable for the single crystal growth of the heavy scintillators with the host LuTaO4.
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Keywords:
- LuTaO4 /
- phase transition /
- powder X-ray diffraction /
- Rietveld refinement
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[4] Xia Y J, Guan Z S, He T 2014 Chin. Phys. B 23 087701
[5] Chen X B, Li S, Ding X L, Yang X D, Liu Q L, Gao Y, Sun P, Yang G J 2014 Chin. Phys. B 23 087809
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[8] Gao J Y, Zhang Q L, Sun D L, Liu W P, Yang H J, Wang X F, Yin S T 2013 Acta Phys. Sin. 62 013102 (in Chinese) [高进云, 张庆礼, 孙敦陆, 刘文鹏, 杨华军, 王小飞, 殷绍唐 2013 62 013102]
[9] Zhang Q L, Ning K J, Ding L H, Liu W P, Sun D L, Jiang H H, Yin S T 2013 Chin. Phys. B 22 067105
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[11] Blasse G, Bail A 1970 J. Lumin. 3 109
[12] Brixner L H 1987 Inorg. Chim. Acta 140 97
[13] Liu W P, Zhang Q L, Ding L H, Sun D L, Luo J Q, Yin S T 2009 J. Alloys Compd. 474 226
[14] Chen S W, Liu X L, Gu M, Ni C, Liu B, Huang S M 2013 J. Lumin. 140 1
[15] Zhao Y P, Zhang Q L, Guo C X, Shi C S, Peng F, Yang H J, Sun D L, Luo J Q, Liu W P 2014 J. Lumin. 155 165
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[19] Siqueira K P F, Carvalho G B, Dias A 2011 Dalton Trans. 40 9454
[20] Titov Y A, Sych A M, Sokolov A N, Kapshuk A A, Markiv V Y, Belyavina N M 2000 J. Alloys Compd. 311 252
[21] Yokogawa Y, Yoshimura M, Smiya S 1988 Solid State Ionics 28–30 1250
[22] Xiao J, Zhang Q L, Zhou W L, Tan X L, Liu W P, Yin S T, Jiang H H, Xia S D, Guo C X 2010 Acta Phys. Sin. 59 7306 (in Chinese) [肖进, 张庆礼, 周文龙, 谭晓靓, 刘文鹏, 殷绍唐, 江海河, 夏上达, 郭常新 2010 59 7306]
[23] Ning K J, Zhang Q L, Zhou P Y, Yang H J, Xu L, Sun D L, Yin S T 2012 Acta Phys. Sin. 61 128102 (in Chinese) [宁凯杰, 张庆礼, 周鹏宇, 杨华军, 许兰, 孙敦陆, 殷绍唐 2012 61 128102]
[24] Larson A C, Von D R B 1994 General Structure Analysis System (Los Alamos: Los Alamos National Laboratory) LAUR 86
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[1] Guerassimova N, Garnier N, Dujardin C, Petrosyan A G, Pedrini C 2001 Chem. Phys. Lett. 339 197
[2] Belogurov S, Bressi G, Carugno G, Moszynski M, Czarnacki W, Kapusta M, Szawlowski M 2003 Nucl. Insrum. Methods Phys. Res. A 496 385
[3] Nikl M, Yoshikawa A, Vedda A, Fukuda T 2006 J. Cryst. Growth 292 416
[4] Xia Y J, Guan Z S, He T 2014 Chin. Phys. B 23 087701
[5] Chen X B, Li S, Ding X L, Yang X D, Liu Q L, Gao Y, Sun P, Yang G J 2014 Chin. Phys. B 23 087809
[6] Issler S L, Torardi C C 1995 J. Alloys Compd. 229 54
[7] Zhao J T, Wang H, Jin T T, Wang C Y, Hu G Q 2010 Materials China 10 40 (in Chinese) [赵景泰, 王红, 金腾腾, 王晨阳, 胡关钦 2010 中国材料进展 10 40]
[8] Gao J Y, Zhang Q L, Sun D L, Liu W P, Yang H J, Wang X F, Yin S T 2013 Acta Phys. Sin. 62 013102 (in Chinese) [高进云, 张庆礼, 孙敦陆, 刘文鹏, 杨华军, 王小飞, 殷绍唐 2013 62 013102]
[9] Zhang Q L, Ning K J, Ding L H, Liu W P, Sun D L, Jiang H H, Yin S T 2013 Chin. Phys. B 22 067105
[10] Brixner L H 1987 Mater. Chem Phys. 16 253
[11] Blasse G, Bail A 1970 J. Lumin. 3 109
[12] Brixner L H 1987 Inorg. Chim. Acta 140 97
[13] Liu W P, Zhang Q L, Ding L H, Sun D L, Luo J Q, Yin S T 2009 J. Alloys Compd. 474 226
[14] Chen S W, Liu X L, Gu M, Ni C, Liu B, Huang S M 2013 J. Lumin. 140 1
[15] Zhao Y P, Zhang Q L, Guo C X, Shi C S, Peng F, Yang H J, Sun D L, Luo J Q, Liu W P 2014 J. Lumin. 155 165
[16] Yokogawa Y, Yoshimura M 1991 J. Am. Ceram. Soc. 74 2077
[17] Yokogawa Y, Ishizawa N, Smiya S, Yoshimura M 1991 J. Am. Ceram. Soc. 74 2073
[18] Yokogawa Y, Yoshimura M 1999 J. Am. Ceram. Soc. 82 1585
[19] Siqueira K P F, Carvalho G B, Dias A 2011 Dalton Trans. 40 9454
[20] Titov Y A, Sych A M, Sokolov A N, Kapshuk A A, Markiv V Y, Belyavina N M 2000 J. Alloys Compd. 311 252
[21] Yokogawa Y, Yoshimura M, Smiya S 1988 Solid State Ionics 28–30 1250
[22] Xiao J, Zhang Q L, Zhou W L, Tan X L, Liu W P, Yin S T, Jiang H H, Xia S D, Guo C X 2010 Acta Phys. Sin. 59 7306 (in Chinese) [肖进, 张庆礼, 周文龙, 谭晓靓, 刘文鹏, 殷绍唐, 江海河, 夏上达, 郭常新 2010 59 7306]
[23] Ning K J, Zhang Q L, Zhou P Y, Yang H J, Xu L, Sun D L, Yin S T 2012 Acta Phys. Sin. 61 128102 (in Chinese) [宁凯杰, 张庆礼, 周鹏宇, 杨华军, 许兰, 孙敦陆, 殷绍唐 2012 61 128102]
[24] Larson A C, Von D R B 1994 General Structure Analysis System (Los Alamos: Los Alamos National Laboratory) LAUR 86
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