Gadolinium oxide single crystals: Optical properties and radiation resistance

Gadolinium oxide single crystals: Optical properties and radiation resistance Full article

Journal

Optical Materials
ISSN: 1873-1252 , E-ISSN: 0925-3467

Output data

Year: 2023, Volume: 141, Article number : 113966, Pages count : 8 DOI: 10.1016/j.optmat.2023.113966

Authors

Pustovarov V.A. ¹ , Nikolaev R.E. ² , Trifonov V.A. ² , Tarasenko M.S. ² , Dhoble S.J. ³ , Tavrunov D.A. ¹ , Naumov N.G. ²

Affiliations

1	Ural Federal University, 19 Mira Str., Ekaterinburg, 620002, Russia
2	Institute of Inorganic Chemistry, Siberian Branch of the Russian Academy of Science, 630090, Novosibirsk, Russia
3	Department of Physics, R.T.M. Nagpur University, Nagpur, 440033, India

Funding (1)

Russian Science Foundation

22-43-02079

Large-size high optical quality Gd2O3 single crystals were grown from solution at T = 1145 °C by Czochralski method. XRD analysis showed that the crystal structure is characterized by a single cubic phase (С-phase). Absorption spectra and luminescence properties of Gd2O3 doped with impurity Tb3+ ion were studied. The absorption spectrum is determined by electronic transitions in Gd3+ ion (spectral region of 245–315 nm) and interband electron transitions below 240 nm. Intraconfigurational radiative f-f transitions from 5D4 level in Tb3+ ion are clearly manifested upon both UV- and X-ray excitation. At the same time, 6PJ → 8S7/2 radiative transitions in Gd3+ ions are completely absent. This fact indicates high efficiency of nonradiative energy transfer from Gd3+ to Tb3+ ions. Thermo-luminescent spectroscopy shows the absence of charge carrier trapping centers, which proves the perfection of its crystal structure. The crystal under study shows high radiation resistance to high-energy (E = 10 MeV, D = 105 kGy) electron beam. However, the effects of irradiation appear only in the photoluminescence excitation spectra and thermally stimulated luminescence.

Pustovarov V.A. , Nikolaev R.E. , Trifonov V.A. , Tarasenko M.S. , Dhoble S.J. , Tavrunov D.A. , Naumov N.G.
Gadolinium oxide single crystals: Optical properties and radiation resistance
Optical Materials. 2023. V.141. 113966 :1-8. DOI: 10.1016/j.optmat.2023.113966 WOS Scopus OpenAlex

Submitted:	Mar 24, 2023
Accepted:	May 26, 2023
Published print:	May 30, 2023
Published online:	May 30, 2023

Web of science:	WOS:001012556500001
Scopus:	2-s2.0-85162768839
OpenAlex:	W4378966061

DB	Citing
Scopus	5
Web of science	4
OpenAlex	4