Theoretical investigations of the spin Hamiltonian parameters and the local structure of a trigonal Co2+ center in Bi4Ge3O12

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	Theoretical investigations of the spin Hamiltonian parameters and the local structure of a trigonal Co2+ center in Bi4Ge3O12
	S. Y. Wu; H. N. Dong
	2004
发表期刊	Zeitschrift Fur Naturforschung Section a-a Journal of Physical Sciences
ISSN	0932-0784
卷号	59 期号:9 页码:563-567
摘要	The spin Hamiltonian parameters anisotropic g factors g(\\), g(perpendicular to) and hyperfine structure constants A(\\) and A I, as well as the local structure of the trigonal Co2+ center in Bi4Ge3O12 (BGO) are theoretically investigated by the perturbation formulas of the spin Hamiltonian parameters for a V ion in trigonal symmetry, based on the cluster approach. It is found that the impurity Co2+ substituting the host Bi3+ undergoes an off-center displacement DeltaZ(approximate to -0.132 Angstrom) away from the center of the oxygen octahedron along the C-3 axis. The spin Hamiltonian parameters based on the above displacement show reasonable agreement with the observed values. The results are discussed.
部门归属	univ elect sci & technol china, dept appl phys, chengdu 610054, peoples r china. chinese acad sci, int ctr mat phys, shenyang 110015, peoples r china. chongqing univ, coll elect engn, chongqing 400065, peoples r china.;wu, sy (reprint author), univ elect sci & technol china, dept appl phys, chengdu 610054, peoples r china;shaoyi_wu@163.com
关键词	Electron Paramagnetic Resonance (Epr) Crystal-field Theory And Spin Hamiltonians Defect Structure Co2++ Bi4ge3o12 (Bgo) Electron-paramagnetic-resonance Atomic Screening Constants Mn-doped Bi4ge3o12 Single-crystals Superposition Model Spectroscopic Properties Epr Parameters Scf Functions Sites Ions
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WOS记录号	WOS:000224098900006
引用统计	被引频次：2[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/321006/35621
专题	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. Theoretical investigations of the spin Hamiltonian parameters and the local structure of a trigonal Co2+ center in Bi4Ge3O12[J]. Zeitschrift Fur Naturforschung Section a-a Journal of Physical Sciences,2004,59(9):563-567.
APA	S. Y. Wu,&H. N. Dong.(2004).Theoretical investigations of the spin Hamiltonian parameters and the local structure of a trigonal Co2+ center in Bi4Ge3O12.Zeitschrift Fur Naturforschung Section a-a Journal of Physical Sciences,59(9),563-567.
MLA	S. Y. Wu,et al."Theoretical investigations of the spin Hamiltonian parameters and the local structure of a trigonal Co2+ center in Bi4Ge3O12".Zeitschrift Fur Naturforschung Section a-a Journal of Physical Sciences 59.9(2004):563-567.