Calculations of EPR g factors for the isolated tetragonal Cu2+(II) centre in mechanically processed YBa2Cu3O7-delta superconductors

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	Calculations of EPR g factors for the isolated tetragonal Cu2+(II) centre in mechanically processed YBa2Cu3O7-delta superconductors
	W. C. Zheng; Y. Mei; Y. G. Yang; P. Su
	2012
发表期刊	Physica Scripta
ISSN	0031-8949
卷号	86 期号:2
摘要	The g factors g (parallel to) and g (vertical bar) of the isolated tetragonal Cu(II)O-5 cluster in YBa2Cu3O7-delta superconductors induced and suppressed by mechanical processing are calculated from the complete diagonalization (of the energy matrix) method (CDM) and the perturbation theory method (PTM). Both methods are based on the cluster approach where in addition to the contribution of the spin-orbit parameter of the central metal ion, the contribution of ligand ion via the covalence effect is taken into account. In the calculations, the structural data of the Cu(II)O-5 cluster gained from x-ray diffraction are applied. The results from both the CDM and the PTM are similar and show reasonable agreement with the experimental values. It appears that both methods can be used to explain the EPR g factors for d(9) ions in crystals.
部门归属	[zheng wen-chen; yang yu-guang; su ping] sichuan univ, dept mat sci, chengdu 610064, peoples r china. [mei yang] mianyang normal univ, sch phys & elect engn, mianyang 621000, peoples r china. [zheng wen-chen] 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 Spin-hamiltonian Parameters Atomic Screening Constants Temperature-dependence Crystal-field Single-crystals Gyromagnetic Factor Scf Functions Ions yba2cu3o6+x
URL	查看原文
文献类型	期刊论文
条目标识符	http://ir.imr.ac.cn/handle/321006/60507
专题	中国科学院金属研究所
推荐引用方式 GB/T 7714	W. C. Zheng,Y. Mei,Y. G. Yang,et al. Calculations of EPR g factors for the isolated tetragonal Cu2+(II) centre in mechanically processed YBa2Cu3O7-delta superconductors[J]. Physica Scripta,2012,86(2).
APA	W. C. Zheng,Y. Mei,Y. G. Yang,&P. Su.(2012).Calculations of EPR g factors for the isolated tetragonal Cu2+(II) centre in mechanically processed YBa2Cu3O7-delta superconductors.Physica Scripta,86(2).
MLA	W. C. Zheng,et al."Calculations of EPR g factors for the isolated tetragonal Cu2+(II) centre in mechanically processed YBa2Cu3O7-delta superconductors".Physica Scripta 86.2(2012).