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Growth units and forming mechanism of KDP crystals

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Abstract

From the view of crystal chemistry, the growth units and forming mechanism of KDP crystals were investigated. The thickness of boundary layers changing with lattice faces was studied byin-situ observation with Raman spectra, where the solution structure during crystal growth could be well observed. It was found that the solution structure at the boundary layer is similar to that of the crystal, so that the growth units are proposed as [H2PO4]−. The difference of growth rates of lattice faces is determined by the combination of growth units, which is mainly dominated by the angular orientation of K−O and H−O bonds. Consequently the reason about the difference of growth rates of lattice faces and the influence of pH value on the crystal morphology can be well elucidated.

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Authors and Affiliations

  1. Shanghai Institute of Ceramics, Chinese Academy of Sciences, 201800, Shanghai, China

    Weizhuo Zhong, Haosu Luo & Sukun Hua

  2. Institute of Crystal Materials, Shandong University, 250100, Jinan, China

    Xiling Yu & Zhenxiang Cheng

Authors
  1. Weizhuo Zhong
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  2. Xiling Yu
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  3. Haosu Luo
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  4. Zhenxiang Cheng
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  5. Sukun Hua
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Additional information

Project supported by the National Natural Science Foundation of China (Grant No. 59772003).

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Zhong, W., Yu, X., Luo, H. et al. Growth units and forming mechanism of KDP crystals. Sci. China Ser. E-Technol. Sci. 41, 586–591 (1998). https://doi.org/10.1007/BF02917041

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  • DOI: https://doi.org/10.1007/BF02917041

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