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The effect of metallic ions on tapering phenomenon of DKDP crystals and its elimination

✍ Scribed by Guohui Li; Youping He; Genbo Su; Xinxin Zhuang; Xiuqin Lin; Zhengdong Li

Publisher
John Wiley and Sons
Year
2007
Tongue
English
Weight
116 KB
Volume
42
Category
Article
ISSN
0232-1300

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✦ Synopsis

Abstract

The anomalous wedge‐like shape of KH~2~PO~4~‐type single crystal, also called tapering, is discussed in this paper. DKDP single crystals grew on seeds from the solutions containing high concentrations of Al^3+^, Fe^3+^ and Cr^3+^ impurities. The tapering phenomenon occurred on the prismatic {010} faces, and the tapering angle ΞΈ was nearly measured as 10Β°. We adjusted the pD value of the solution from 3.0 to 4.2 by adding K~2~CO~3~, the tapering angle of DKDP crystal grown from the same solution at same supercooling was reduced to 0Β°. (Β© 2007 WILEY‐VCH Verlag GmbH & Co. KGaA, Weinheim)

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