An investigation of the spin-Hamiltonian parameters for Gd3+-doped YBa2Cu3O6+y (y=0.06) superconductor

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	An investigation of the spin-Hamiltonian parameters for Gd3+-doped YBa2Cu3O6+y (y=0.06) superconductor
	W. Q. Yang; Y. Lin; W. C. Zheng; X. Y. Zhao
	2012
发表期刊	Superconductor Science & Technology
ISSN	0953-2048
卷号	25 期号:6
摘要	The spin-Hamiltonian parameters (g factors g(parallel to) and g(perpendicular to) and zero-field splittings b(2)(0), b(4)(0), b(4)(4), b(6)(0) and b(6)(4)) for Gd3+ ions at the tetragonal Y3+ site of YBa2Cu3O6+y (y = 0.06) superconductor are calculated together from a diagonalization (of the energy matrix) method based on the one-electron crystal field mechanism. In the method, a 56 x 56 energy matrix concerning the ground multiplet S-8(7/2) and the excited multiplets L-8(7/2) (where L = P, D, F, G, H, I) for 4f(7) ions at a tetragonal crystal field and under an external magnetic field is constructed and used. The crystal field parameters B-k(q) in the energy matrix are obtained from the superposition model. The calculated results are in reasonable agreement with the experimental values. The defect structure (characterized by the angular distortion Delta theta) of the Gd3+ impurity centers in YBa2Cu3O6+y is also acquired from the calculation. The results are discussed.
部门归属	[yang, wei-qing; lin, yuan] univ elect sci & technol china, state key lab elect thin films & integrated devic, chengdu 610054, peoples r china. [yang, wei-qing; zhao, xiao-yun] chengdu univ informat technol, dept photoelect technol, chengdu 610225, peoples r china. [zheng, wen-chen] sichuan univ, dept mat sci, chengdu 610064, peoples r china. [zheng, wen-chen] chinese acad sci, int ctr mat phys, shenyang 110016, peoples r china.;yang, wq (reprint author), univ elect sci & technol china, state key lab elect thin films & integrated devic, chengdu 610054, peoples r china.;cdywq168@163.com; yuanlin@uestc.edu.cn
关键词	Electron-paramagnetic-resonance Superposition-model Analysis Crystal-field Parameters Single-crystals Epr-spectra Magnetic-field Energy-levels Ions Gd3++ Temperature
URL	查看原文
文献类型	期刊论文
条目标识符	http://ir.imr.ac.cn/handle/321006/60399
专题	中国科学院金属研究所
推荐引用方式 GB/T 7714	W. Q. Yang,Y. Lin,W. C. Zheng,et al. An investigation of the spin-Hamiltonian parameters for Gd3+-doped YBa2Cu3O6+y (y=0.06) superconductor[J]. Superconductor Science & Technology,2012,25(6).
APA	W. Q. Yang,Y. Lin,W. C. Zheng,&X. Y. Zhao.(2012).An investigation of the spin-Hamiltonian parameters for Gd3+-doped YBa2Cu3O6+y (y=0.06) superconductor.Superconductor Science & Technology,25(6).
MLA	W. Q. Yang,et al."An investigation of the spin-Hamiltonian parameters for Gd3+-doped YBa2Cu3O6+y (y=0.06) superconductor".Superconductor Science & Technology 25.6(2012).