Influence of bond valence on bond covalency in calcium doped lanthanum chromite

被引：0
|
作者：
Wu, ZJ [1 ]
Meng, QB [1 ]
Zhang, SY [1 ]
机构：
[1] Chinese Acad Sci, Changchun Inst Appl Chem, Lab Rare Earth Chem & Phys, Changchun 130022, Peoples R China
来源：
CHINESE JOURNAL OF CHEMISTRY | 1999年 / 17卷 / 02期
关键词：
bond covalency; bond valence; La1-xCaxCrO3; semiempirical method;
D O I：
暂无
中图分类号：
O6 [化学];
学科分类号：
0703 ;
摘要：
The influence of bond valence on bond covalency in La1-xCaxCrO3(x =0.0, 0.1, 0.2, 0.3) has been studied by using semiempirical method. This method is the extension of the dielectric description theory proposed by Phillips, Van Vechten, levine and Tanaka (PVLT). In the calculation of bond valence, two schemes were adopted. The first is the equal-valence scheme, and the second is Bond Valence Sums (BVS) scheme. Both schemes suggest that for the title compound bond covalency be mainly influenced by bond valence, and insensitive to the Ca doping level. Generally speaking, larger bond valences usually result in higher bond covalencies.
引用
收藏
页码：108 / 113
页数：6
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