Studies on the local structure of the tetragonal Er3+ center in CaO

CORC > 金属研究所 > 中国科学院金属研究所

	Studies on the local structure of the tetragonal Er3+ center in CaO
	S. Y. Wu ; H. N. Dong
刊名	Zeitschrift Fur Naturforschung Section a-a Journal of Physical Sciences
	2005
卷号	60 期号:4 页码:271-274
关键词	defect structures electron paramagnetic resonance (EPR) crystal-field and spin hamiltonians Er3+ CaO electron-spin-resonance superposition-model insulator coatings magnesium-oxide vanadium alloys single-crystals calcium oxide parameters blankets ions
ISSN号	0932-0784
中文摘要	The local structure of the tetragonal Er3+ center in CaO is theoretically studied by using the perturbation formulas of the g factors for a 4f(11) ion in tetragonal symmetry. In these formulas, the contributions to the g factors from the second-order perturbation terms and the admixtures of various states are taken into account. Based on the investigations, this center is suggested to be the impurity Er3+ substituting the host Ca2+ site, associated with a Ca2+ vacancy V-Ca in the [100] (C-4) axis due to charge compensation. By studying the g factors of the tetragonal center, impurity Er3+ is expected to undergo an off-center displacement Delta Z( approximate to 0.2 A) towards the V-Ca along the C-4 axis because of the electrostatic attraction. The calculated g factors based on the displacement Delta Z show reasonable agreement with the observed values.
原文出处	://WOS:000229433100009
公开日期	2012-04-14
内容类型	期刊论文
源URL	[http://ir.imr.ac.cn/handle/321006/35127]
专题	金属研究所_中国科学院金属研究所
推荐引用方式 GB/T 7714	S. Y. Wu,H. N. Dong. Studies on the local structure of the tetragonal Er3+ center in CaO[J]. Zeitschrift Fur Naturforschung Section a-a Journal of Physical Sciences,2005,60(4):271-274.
APA	S. Y. Wu,&H. N. Dong.(2005).Studies on the local structure of the tetragonal Er3+ center in CaO.Zeitschrift Fur Naturforschung Section a-a Journal of Physical Sciences,60(4),271-274.
MLA	S. Y. Wu,et al."Studies on the local structure of the tetragonal Er3+ center in CaO".Zeitschrift Fur Naturforschung Section a-a Journal of Physical Sciences 60.4(2005):271-274.