Growth of lead molybdate crystals by vertical Bridgman method |
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| Authors: | Hongbing Chen Congxin Ge Rongsheng Li Jinhao Wang Changgen Wu Xianling Zeng |
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| Affiliation: | (1) Municipal Key Laboratory of Inorganic Materials, Institute of Solid State Chemistry, Ningbo University, 315211 Ningbo, P.R. China;(2) Department of Materials Science, University of Science and Technology of China, 230026 Hefei, P.R. China |
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| Abstract: | 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 solid-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 300–800 nm at room temperature. |
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| Keywords: | Crystal growth Bridgman method acousto-optic crystal lead molybdate |
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