Studies of the g factor for Cr4+ ion in Bi4Ge3O12 crystal from crystal-field and charge-transfer mechanisms

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	Studies of the g factor for Cr4+ ion in Bi4Ge3O12 crystal from crystal-field and charge-transfer mechanisms
	X. X. Wu; W. C. Zheng; S. Tang
	2004
发表期刊	Zeitschrift Fur Naturforschung Section a-a Journal of Physical Sciences
ISSN	0932-0784
卷号	59 期号:7-8 页码:467-470
摘要	The complete third-order perturbation formulas of the g factors g(\\) and g(perpendicular to) for 3d(2) ions in tetragonal MX4 clusters have been obtained by a cluster approach. In these formulas, in addition to contributions to the g factors from the crystal-field mechanism in the crystal-field theory, the contributions from the charge-transfer mechanism are included. From these formulas, the g factors g(\\) and g(perpendicular to) for a Cr4+ ion in a Bi4Ge3O12 crystal are calculated. The results agree with the observed values. The calculated Deltag(i)(i = \\ or perpendicular to) value due to the charge-transfer is opposite in sign and about 20% greater than that due to the crystal-field mechanism. So, for the 3d(n) ions having a high valence in crystals, a reasonable explanation of the g factors should take both the crystal-field and charge-transfer mechanisms into account.
部门归属	sichuan univ, dept mat sci, chengdu 610064, peoples r china. civil aviat flying inst china, dept phys, gunghan 618307, peoples r china. chinese acad sci, int ctr mat phys, shenyang 110016, peoples r china.;zheng, wc (reprint author), sichuan univ, dept mat sci, chengdu 610064, peoples r china;zhengwc1@163.com
关键词	Electron Paramagnetic Resonance Crystal- And ligAnd- Field Theory Charge-transfer Mechanism Cr4++ Bi4ge3o12 Electron-paramagnetic-resonance Atomic Screening Constants Single-crystals Superposition Model Scf Functions Epr
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WOS记录号	WOS:000223471600009
引用统计	被引频次：1[WOS] [WOS记录] [WOS相关记录]
文献类型	期刊论文
条目标识符	http://ir.imr.ac.cn/handle/321006/35641
专题	中国科学院金属研究所
推荐引用方式 GB/T 7714	X. X. Wu,W. C. Zheng,S. Tang. Studies of the g factor for Cr4+ ion in Bi4Ge3O12 crystal from crystal-field and charge-transfer mechanisms[J]. Zeitschrift Fur Naturforschung Section a-a Journal of Physical Sciences,2004,59(7-8):467-470.
APA	X. X. Wu,W. C. Zheng,&S. Tang.(2004).Studies of the g factor for Cr4+ ion in Bi4Ge3O12 crystal from crystal-field and charge-transfer mechanisms.Zeitschrift Fur Naturforschung Section a-a Journal of Physical Sciences,59(7-8),467-470.
MLA	X. X. Wu,et al."Studies of the g factor for Cr4+ ion in Bi4Ge3O12 crystal from crystal-field and charge-transfer mechanisms".Zeitschrift Fur Naturforschung Section a-a Journal of Physical Sciences 59.7-8(2004):467-470.