Growth of lead molybdate crystals by vertical Bridgman method

Bulletin of materials science

Congxin Ge²  Jinhao Wang²  Changgen Wu¹  Xianling Zeng¹  Rongsheng Li²  Hongbing Chen² 

[1] Department of Materials Science, University of Science and Technology of China, Hefei 230026, P.R. China$$Department of Materials Science, University of Science and Technology of China, Hefei 230026, P.R. ChinaDepartment of Materials Science, University of Science and Technology of China, Hefei 230026, P.R. China$$;Municipal Key Laboratory of Inorganic Materials, Institute of Solid State Chemistry, Ningbo University, Ningbo 315211, P.R. China$$Municipal Key Laboratory of Inorganic Materials, Institute of Solid State Chemistry, Ningbo University, Ningbo 315211, P.R. ChinaMunicipal Key Laboratory of Inorganic Materials, Institute of Solid State Chemistry, Ningbo University, Ningbo 315211, P.R. China$$

关键词: Crystal growth;    Bridgman method;    acousto-optic crystal;    lead molybdate.;   

DOI  :  

学科分类：材料工程

来源: Indian Academy of Sciences

【 摘 要 】

The growth of PbMoO₄ crystals by the modified Bridgman method has been reported in this paper. The feed material with strict stoichiometric composition is desirable for the Bridgman growth of the crystals. The continuous composition change of the melts during growth can be avoided because the volatilization of melts is limited by sealed platinum crucibles. By means of the optimum growth parameters such as the growth rate of < 1.2 mm/h and the temperature gradient of 20 ∼ 40°C/cm across the solidâ€�?�liquid interface under the furnace temperature of 1140 ∼ 1200°C, large size crystals with high optical uniformity were grown successfully. The distribution of Pb and Mo concentration along the growth axis was measured by X-ray fluorescence analysis. The single crystallinity of the grown sample was evaluated by the double-crystal X-ray rocking curve. The transmission spectra were measured in the range of 300â€�??800 nm at room temperature.

【 授权许可】

Unknown