ELECTRIC-FIELD GRADIENTS IN IONIC GADOLINIUM COMPOUNDS

被引：32

作者：

BARTON, WA ^{[1
]}

CASHION, JD ^{[1
]}

机构：

[1] MONASH UNIV,DEPT PHYS,CLAYTON 3168,VICTORIA,AUSTRALIA

来源：

JOURNAL OF PHYSICS C-SOLID STATE PHYSICS | 1979年 / 12卷 / 14期

关键词：

D O I：

10.1088/0022-3719/12/14/024

中图分类号：

O469 [凝聚态物理学];

学科分类号：

070205 ;

摘要：

The calculation of the electric-field gradients (EFGs) in a number of ionic gadolinium compounds is considered. The lattice EFGs at the sites of Gd 3+ ions have been evaluated by means of a point-charge model. Comparison of the results with quadrupole-splitting data yields a value of -75+or-2 for the Sternheimer antishielding factor gamma infinity for the Gd 3+ ion. The accuracy of the lattice EFGs is discussed in terms of uncertainties in the structural parameters, the assumption of complete ionicity and the omission of ionic polarisabilities.

引用

页码：2897 / 2906

页数：10

共 24 条

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