Zero-Field Splitting Parameter of Mn2+ in Zinc Aluminate Single Crystals |
| M. Bharatia, V. Singha, R. Kripalb
aDepartment of Physics, Nehru Gram Bharti (DU), Jamunipur, Prayagraj, India bEPR Laboratory, Department of Physics, University of Allahabad, Prayagraj-211002, India |
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| A theoretical study of the crystal-field parameters and zero-field splitting parameter of Mn2+-doped zinc aluminate single crystals has been completed with the use of the perturbation theory and the superposition model. The theoretical value of the zero-field splitting parameter D agrees well with the experimental value. This validates the experimental outcome that Mn2+ ions substitute at the Zn2+ site in zinc aluminate single crystal. Using the parameters of the crystal field and the crystal field analysis program, the optical spectra of Mn2+-doped zinc aluminate crystal are calculated. The calculated and experimental energy values agree with each other reasonably well. Thus, the theoretical approach supports the experiment. |
DOI:10.12693/APhysPolA.146.123 topics: inorganic compounds, single crystal and crystal fields, optical properties, electron paramagnetic resonance |