Spin–spin and spin–other-orbit effects of optical spectra and the spin-Hamiltonian parameters for Cr3+ ions in MgO crystals

Yang, Ziyuan

doi:10.1016/j.jlumin.2006.11.008

Cited by 8 publications

(2 citation statements)

References 41 publications

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“…The ground state eigenvectors will be used in calculating the spectroscopic splitting g-factors. For Cr 3+ ions at tetragonal symmetry, the effective spin Hamiltonian, taking into account the ZFS and Zeeman terms, can be written as [15]:…”

Section: Theorymentioning

confidence: 99%

Investigations of the Optical and EPR Spectra for Cr³⁺Ions in Diammonium Hexaaqua Magnesium Sulphate Single Crystal

Wei

2010

Acta Phys. Pol. A

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The relations between spin-Hamiltonian parameters and local structure around Cr 3+ in diammonium hexaaqua magnesium sulphate single crystal were established. On the basis of this, the spin-Hamiltonian parameters, optical spectra and the local structure were investigated successfully. The calculated results are in good agreement with experimental data. This shows that the distortion model adopted in this paper is reasonable.

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Section: Theorymentioning

confidence: 99%

Investigations of the Optical and EPR Spectra for Cr³⁺Ions in Diammonium Hexaaqua Magnesium Sulphate Single Crystal

Wei

2010

Acta Phys. Pol. A

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“…In this work, the EPR parameters and the defect structure of a tetrahedral Fe 3+ center in zinc oxide are theoretically studied by the complete diagonalization method (CDM) [8][9][10]. By simulating the EPR parameters D and (a-F) as well as the electric fine structure of the ground state for Fe 3+ in Fe 3+ :ZnO crystals simultaneously, we study the crystal structure around Fe 3+ ion located at a tetrahedral site in Fe 3+ :ZnO crystals.…”

Section: Introductionmentioning

confidence: 99%

Studies of the EPR parameters and defect structure for tetrahedral Fe³⁺ centers in zinc oxide

Yang¹

2009

Physica Status Solidi (b)

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The relations between the electron paramagnetic resonance (EPR) parameters and crystal structure of Fe3+:ZnO crystals have been established. On the basis of this, the EPR parameters D, (a‐F) and the zero‐field splitting (ZFS) δ1, δ2 of the ground state for Fe3+ in Fe3+:ZnO crystals are theoretically investigated using the complete diagonalization method (CDM). The theoretical second‐order EPR parameter D, the fourth‐order EPR parameter (a‐F), and the ZFS of the ground state: δ1, δ2 for Fe3+ in Fe3+:ZnO yield a good agreement with experimental findings when the three O2– ions below the Fe3+ ion rotate by Δθ in the range 0.475–0.562° away from the [111] axis. Hence, the local structure distortion effect plays an important role in explaining the spectroscopic properties of Fe3+ ions in Fe3+:ZnO crystals. Our approach takes into account the spin–orbit (SO) interaction as well as the spin–spin (SS), spin–other–orbit (SOO), and orbit–orbit (OO) interactions omitted in previous studies. This shows that although the SO interaction is the most important one, the contributions to the EPR parameters from the other three interactions are appreciable and should not be omitted, especially for the EPR parameter D. (© 2009 WILEY‐VCH Verlag GmbH & Co. KGaA, Weinheim)

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Zero-field splitting of 4 T 2 term for 3d3 ions in tetragonal symmetry

Wei

2009

Pramana - J Phys

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By taking into account slight interactions, i.e. spin-spin, spin-other-orbit and orbit-orbit interactions, in addition to spin-orbit interaction, the zero-field splitting of 4 T2 state for 3d 3 ions at tetragonal symmetry has been studied. The convergence of the approximation perturbation formula of 4 T2 state for 3d 3 ions at tetragonal symmetry has been investigated, and the contributions to zero-field splitting arising from magnetic interaction and tetragonal crystal field are discussed. It is found that there exists combined mechanism between magnetic interactions and tetragonal crystal field.

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Spin–spin and spin–other-orbit effects of optical spectra and the spin-Hamiltonian parameters for Cr3+ ions in MgO crystals

Cited by 8 publications

References 41 publications

Investigations of the Optical and EPR Spectra for Cr³⁺Ions in Diammonium Hexaaqua Magnesium Sulphate Single Crystal

Investigations of the Optical and EPR Spectra for Cr³⁺Ions in Diammonium Hexaaqua Magnesium Sulphate Single Crystal

Studies of the EPR parameters and defect structure for tetrahedral Fe³⁺ centers in zinc oxide

Zero-field splitting of 4 T 2 term for 3d3 ions in tetragonal symmetry

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Spin–spin and spin–other-orbit effects of optical spectra and the spin-Hamiltonian parameters for Cr3+ ions in MgO crystals

Cited by 8 publications

References 41 publications

Investigations of the Optical and EPR Spectra for Cr3+Ions in Diammonium Hexaaqua Magnesium Sulphate Single Crystal

Investigations of the Optical and EPR Spectra for Cr3+Ions in Diammonium Hexaaqua Magnesium Sulphate Single Crystal

Studies of the EPR parameters and defect structure for tetrahedral Fe3+ centers in zinc oxide

Zero-field splitting of 4 T 2 term for 3d3 ions in tetragonal symmetry

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Investigations of the Optical and EPR Spectra for Cr³⁺Ions in Diammonium Hexaaqua Magnesium Sulphate Single Crystal

Investigations of the Optical and EPR Spectra for Cr³⁺Ions in Diammonium Hexaaqua Magnesium Sulphate Single Crystal

Studies of the EPR parameters and defect structure for tetrahedral Fe³⁺ centers in zinc oxide