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Majewski-Napierkowski, Artur; Yuriy Zorenko; Dauletbekova, Alma; Dosmagambetov, Zhadiger; Akilbekov, Abdirash; Karipbayev, Zhakyp; Gulnara , Aralbayeva; Assylbayev, Ruslan; Manika, Ilze; Ignatans, Reinis; Smits, Krisjanis; Popov, Anatoli I., 2026, "Structural and optical properties of Y3Al5O12 single crystals irradiated by swift heavy Xe ions", https://doi.org/10.18150/6GNZEM, RepOD, V1
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The multifaceted radiation effects occurring in advanced optical material – the crystals of yttrium aluminum garnet Y3Al5O12, irradiated by fast heavy Xe ions to fluences of 6×1010-1013 ions/cm2 have been investigated using various research techniques, including optical absorption, Raman spectroscopy, photoluminescence under excitation by the synchrotron radiation, nanohardness measurements, and high-resolution transmission electron microscopy. The near-surface layer at high fluence becomes amorphous, and material softening indicates destruction of cation-anion bonds due to tracks overlapping. Transmission electron microscopy analysis confirmed the presence of continuous tracks in irradiated Y3Al5O12 crystals at energy losses above 10 keV/nm, whereas lower-energy tracks appear as chains of smaller defects. The core track diameter dc (5.00 -/+ 0.15) nm, with a surrounding damaged region of dd (10.00 -/+ 0.15) nm. An increase in the concentration of oxygen vacancies (F and F+ centers) and YAl antisite defects with increasing irradiation fluence is confirmed through photoluminescence spectra of initial and irradiated crystals under at 9 K. In addition, dimers YAl - F+ and/or YAl - F can be formed on the basis of antisite defects with F-like centers due to melting and recrystallization of the material during trace formation under Xe ion irradiation conditions.
Y3Al5O12, optical absorption, luminescence, synchrotron radiation, Raman spectra, nanohardness, swift heavy ions, tracks
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