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论文类型：期刊论文

发表时间：2012-09-01

发表刊物：SCIENCE OF ADVANCED MATERIALS

收录刊物：SCIE、Scopus

卷号：4

期号：9

页面范围：901-905

ISSN号：1947-2935

关键字：K(1-x)A(x)DP Mixed Crystal; Chemical Bond; Hardness; Chemical Strain

摘要：We have proposed an approach to characterize the anisotropy of mechanical property in K(1-x)A(x)DP crystallographic frame by the oriented distribution of chemical bond. The anisotropic hardness of K(1-x)A(x)DP crystals and their dependence on constituent concentration were quantitatively calculated. The hardness of K(1-x)A(x)DP decreases with increasing NH4+ concentration x. The detailed variation of chemical strain in the whole composition range was determined. The chemical strain along c-axis quickly accumulates with increasing the content of NH4+ and reaches the biggest when x approaches to 0.6. The current work indicates that the oriented distribution of bond valence captures the main interaction of crystal materials and can be utilized for the description of crystal anisotropy.