Unveiling the Structural and Optical Properties of MgAl2O4 Single Crystals Irradiated by Swift Heavy Ions
Akilbekov A. Kiryakov A. Dauletbekova A. Aralbayeva G. Akylbekova A. Ospanova Z.
January 2024Multidisciplinary Digital Publishing Institute (MDPI)
Materials
2024#17Issue 2
A synthetic single crystal of magnesium-aluminate spinel was irradiated perpendicularly to the (111) plane with swift heavy xenon ions with an energy of 220 MeV. The modified layer was attested based on Raman scattering spectra recorded while focusing on the surface. A decrease in surface crystallinity was observed, reflected in the changes in fundamental optical characteristics such as the band gap and the energies of static and dynamic disorder. In this study, we demonstrate, along with the modification of optical characteristics and the formation of a disordered layer, the creation of new optically active centers. The luminescent properties of these centers were analyzed. The effect of temperature flare-up in the 3.4 eV band of the excitation spectrum was determined. The low sensitivity of Cr3+ luminescence to SHI is demonstrated.
flare-up , MgAl2O4 , optical properties , photoluminescence , swift heavy ions
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Department of Technical Physics, L.N. Gumilyov Eurasian National University, Astana, 010008, Kazakhstan
Ural Federal University, 21 Mira Str, Yekaterinburg, 620002, Russian Federation
Department of Technical Physics
Ural Federal University
10 лет помогаем публиковать статьи Международный издатель
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