1. Magnetic and optical properties of virgin arc furnace grown MgO crystals
- Author
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Prucnal, S., Shalimov, A., Ozerov, M., Potzger, K., and Skorupa, W.
- Subjects
- *
MAGNESIUM oxide crystals , *MAGNETIC crystals , *CRYSTAL optics , *CRYSTAL growth , *TRANSITION metal ions , *ELECTRIC furnaces - Abstract
Abstract: Transition metal ions (Mn2+, Cr3+, Fe2+/3+, V2+) as substitutional impurities in cubic crystals play an important role due to their influence on the magneto-optical properties of the virgin crystals. The optical and magnetic properties of commercial MgO(001) single crystals were investigated. The PL spectra of 3d impurity ions (Cr3+ and V2+) show narrow zero phonon lines with decay times in the range of milliseconds and a broad multiphonon sideband decaying in microseconds. The EPR study exhibits hyperfine components corresponding to Mn atoms and to V atoms located in orthorhombic symmetry. The intensity change of the EPR and PL spectra as well as the variation of the decay time with temperature can be explained by electron-spin lattice relaxation due to the Raman process. [Copyright &y& Elsevier]
- Published
- 2012
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