Investigations of the optical spectra and EPR g-factors for the tetragonal Ce3+centers in YPO4 and LuPO4 crystals

被引：18

作者：

Liu, H. G. ^{[1
]}

Zheng, W. C. ^{[1
,2
]}

Feng, W. L. ^{[1
,3
]}

机构：

[1] Sichuan Univ, Dept Mat Sci, Chengdu 610064, Peoples R China

[2] Chinese Acad Sci, Int Ctr Mat Phys, Shenyang 110016, Peoples R China

[3] Chongqing Inst Technol, Dept Appl Phys, Chongqing 400050, Peoples R China

来源：

PHILOSOPHICAL MAGAZINE LETTERS | 2009年 / 89卷 / 04期

关键词：

Ce3+; YPO4; LuPO4; crystal field; electron paramagnetic resonance; optical spectroscopy; oxides; SUPERPOSITION-MODEL ANALYSIS; SINGLE-CRYSTALS; SITE SYMMETRY; FIELD; PARAMETERS; IONS; TRANSITION; RUBY; CE3;

D O I：

10.1080/09500830902862412

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

The optical spectral band positions and EPR g-factors (g, g) for the tetragonal Ce3+ centers in YPO4 and LuPO4 crystals with the zircon-structure are calculated using a complete diagonalization (of the energy matrix) method (CDM) related to 4f1 ions in tetragonal symmetry. In this method, the Zeeman interaction term are added to the Hamiltonian in the conventional CDM and so no perturbation calculations are required to obtain the g factors. The crystal-field parameters used in the calculations are obtained from the superposition model in which the local lattice relaxation related to the bonding lengths is considered. The calculated results are in reasonable agreement with the experimental values. It is found that the four observed optical bands for both the systems can be attributed to Ce3+ ions in a tetragonal crystal field.

引用

页码：306 / 311

页数：6

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