Investigations of the defect structure for Cu2+ in SrLaAlO4

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	Investigations of the defect structure for Cu2+ in SrLaAlO4
	W. H. Wei ; S. Y. Wu ; H. N. Dong
刊名	Zeitschrift Fur Naturforschung Section a-a Journal of Physical Sciences
	2005
卷号	60 期号:7 页码:541-544
关键词	electron paramagnetic resonance (EPR) defect structure crystal-field and spin Hamiltonians Cu2+ SrLaAlO4 brillouin-scattering superposition model single-crystals srlagao4 ions epr parameters resonance cobalt
ISSN号	0932-0784
中文摘要	The defect structure for Cu2+ in SrLaAlO4 is theoretically investigated by the perturbation formulas of the spin Hamiltonian parameters (g factors g(vertical bar vertical bar), g(perpendicular to) and the hyperfine structure constants All and A(perpendicular to)) for a 3d(9) ion in tetragonally elongated octahedra. Based on these studies, the tetragonal center may be attributed to Cu2+ occupying the host Al3+ site, associated with one hole delocalized at the four oxygen ligands in planar coordination. Furthermore, the four Cu,O bonds (perpendicular to the four-fold axis) are found to suffer an outward stretch of about 0.06 angstrom due to (i) the local tenseness in this plane, arising from the size mismatching substitution of the smaller Al3+ by the larger Cu2+ and (ii) the weaker electrostatic attraction of the less charged Cu2+ acting upon the four oxygen ions containing the delocalized hole. The calculated spin Hamiltonian parameters agree well with the experimental data. The defect structure of this center is discussed.
原文出处	://WOS:000231361100013
公开日期	2012-04-14
内容类型	期刊论文
源URL	[http://ir.imr.ac.cn/handle/321006/35106]
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	W. H. Wei,S. Y. Wu,H. N. Dong. Investigations of the defect structure for Cu2+ in SrLaAlO4[J]. Zeitschrift Fur Naturforschung Section a-a Journal of Physical Sciences,2005,60(7):541-544.
APA	W. H. Wei,S. Y. Wu,&H. N. Dong.(2005).Investigations of the defect structure for Cu2+ in SrLaAlO4.Zeitschrift Fur Naturforschung Section a-a Journal of Physical Sciences,60(7),541-544.
MLA	W. H. Wei,et al."Investigations of the defect structure for Cu2+ in SrLaAlO4".Zeitschrift Fur Naturforschung Section a-a Journal of Physical Sciences 60.7(2005):541-544.