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Optical absorption spectra and EPR g factor of divalent nickel doped magnesia crystal |
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| Authors: | W.L. Feng X.M. Li W.J. Yang Y.L. Yang |
| Affiliation: | a Key Laboratory for Optoelectronic Technology and Systems, Ministry of Education; College of Optoelectronic Engineering, Chongqing University, Chongqing 400044, China b Department of Applied Physics, Chongqing University of Technology, Chongqing, 400054, China c International Centre for Materials Physics, Chinese Academy of Sciences, Shengyang, 110016, China d College of Chemistry and Chemical Engineering, Chongqing University, Chongqing, 400044, China |
| Abstract: | Based on the crystal- and ligand-field theory, the optical absorption spectra and electron paramagnetic resonance (EPR) g factor of Ni2+ ion at Mg2+ position in MgO have been investigated. The bond length (i.e. Ni2+-O2− distance) was determined from the cubic field parameter Dq; the crystal field Hamiltonian including the spin-orbital (SO) coupling effect of the ligand was diagonalized in the complete basis of 45 wave functions. Results of calculations are in a good agreement with experimental data. |
| Keywords: | Optical properties Crystal- and ligand field Electron paramagnetic resonance MgO Ni2+ |
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