Investigations of the zero-field splittings and g factors for the rhombic Cr~(3+)-Hi~+ and Cr~(3+)-Na~+ defect centers in Cs_2CdCl_4 crystals

Shao-Yi wu; Wen-Chen Zheng

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Investigations of the zero-field splittings and g factors for the rhombic Cr~(3+)-Hi~+ and Cr~(3+)-Na~+ defect centers in Cs_2CdCl_4 crystals

机译：Cs_2CdCl_4晶体中菱形Cr〜（3 +）-Hi〜+和Cr〜（3 +）-Na〜+缺陷中心零场分裂和g因子的研究

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The high-order perturbation formulas for the zero-field splitting parameters D and E, and g factor g_x, g_y, g_z for 3d~3 ions in rhombic symmetry are derived by using a two spin-orbit coupling parameter model, in which both the contributions from the spin-orbit coupling of central d~3 ion and that of the ligands are considered. From these formulas, spin Hamiltonian parameters for the rhombic defect centers Cr~(3+) - Hi~+ and Cr~(3+) - Na~+ in Cs_2CdCl_4 crystals are calculated by considering the suitable defect-induced lattice distortions. The results agree well with the observed values. The contributions to spin Hamiltonian parameters from the spin-orbit coupling of ligands are discussed.

机译：利用两个自旋轨道耦合参数模型，推导了对称对称的3d〜3离子的零场分裂参数D和E的高阶摄动公式以及g因子g_x，g_y，g_z。考虑了中心d〜3离子的自旋轨道耦合和配体的自旋轨道贡献。根据这些公式，通过考虑合适的缺陷引起的晶格畸变，计算出Cs_2CdCl_4晶体中菱形缺陷中心Cr〜（3+）-Hi〜+和Cr〜（3+）-Na〜+的自旋哈密顿量。结果与观察值非常吻合。讨论了配体的自旋轨道耦合对自旋哈密顿参数的贡献。

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《Physica, B. Condensed Matter》 |1999年第2期|共6页
作者
Shao-Yi wu; Wen-Chen Zheng;
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正文语种 eng
中图分类物理学;
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crystal- and ligand-field theory; electron paramagnetic resonance; spin-orbit coupling; Cr~(3+); Cs_2CdCl_4;

机译：晶体和配体场理论;电子顺磁共振;自旋轨道耦合;Cr〜（3 +）;Cs_2CdCl_4;

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机译：Cs_2CdCl_4晶体中菱形Cr〜（3 +）-Hi〜+和Cr〜（3 +）-Na〜+缺陷中心零场分裂和g因子的研究
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Investigations of the zero-field splittings and g factors for the rhombic Cr~(3+)-Hi~+ and Cr~(3+)-Na~+ defect centers in Cs_2CdCl_4 crystals

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