Effect of an electron beam irradiation on optical and luminescence properties of LiBaAlF6 single crystals / Ogorodnikov I. N.,Pustovarov V. A.,Omelkov S. I.,Kirm M. // OPTICAL MATERIALS. - 2017. - V. 69, l. . - P. 344-351.

ISSN/EISSN:

0925-3467 / 1873-1252

Type:

Article

Abstract:

Paper reports the effect of a 10 keV, 110 keV and 10 MeV electron beam irradiation on optical and luminescence properties of LiBaAlF6 (LBAF) single crystals at 10, 90, and 293 K. Five absorption bands at 2.0, 3.2, 4.3, 4.9 and 5.5 eV were revealed in irradiated crystals in the energy range of 1.2-9.5 eV. Several PL emission bands (1.7-1.8, 2.2 and 2.5-3.5 eV) related to defects were found in the luminescence spectra at room temperature, while only one luminescence band at E = 2.2 eV appears at T = 90 K in LBAF crystals after a 10 MeV electron bombardment. The PL excitation spectra and time-response for these emission bands were studied at 10, 90, and 293 K. Thermoluminescence (TL) of irradiated crystals was studied in temperature range of 90-740 K. New TL glow peaks at the 166, 530 and 670 K were revealed and their parameters were determined. Temperature dependence of relative photoluminescence yield recorded monitoring emission at the 1.87 and 2.23 eV in the temperature range from 130 to 450 K, were fitted using five quenching processes related to TL glow peaks revealed in our research. Significant similarity in the manifestation of radiation-induced defects for LBAF and previously studied LiBaF3 single crystals is noted. The effect of an electron beam irradiation on optical and luminescence properties of LBAF single crystals and possible origin of the radiation defects were discussed. (C) 2017 Elsevier B.V. All rights reserved.

Author keywords:

Fluoride crystal LBAF; Optical absorption spectra; Luminescence spectra; Electron beam irradiation; Radiation defects F-TYPE CENTERS; LIBAF3 CRYSTALS; COLOR-CENTERS; BALIF3 CRYSTALS; RECOMBINATION LUMINESCENCE; INDUCED DEFECTS; SPECTROSCOPY; RADIATION; EUROPIUM; EPR

DOI:

10.1016/j.optmat.2017.04.060

Web of Science ID:

ISI:000404305200051

Соавторы в МНС:

Другие поля

Поле	Значение
Month	JUL
Publisher	ELSEVIER SCIENCE BV
Address	PO BOX 211, 1000 AE AMSTERDAM, NETHERLANDS
Language	English
EISSN	1873-1252
Keywords-Plus	F-TYPE CENTERS; LIBAF3 CRYSTALS; COLOR-CENTERS; BALIF3 CRYSTALS; RECOMBINATION LUMINESCENCE; INDUCED DEFECTS; SPECTROSCOPY; RADIATION; EUROPIUM; EPR
Research-Areas	Materials Science; Optics
Web-of-Science-Categories	Materials Science, Multidisciplinary; Optics
Author-Email	i.n.ogorodnikov@gmail.com
ResearcherID-Numbers	Ogorodnikov, Igor/B-4162-2011
ORCID-Numbers	Ogorodnikov, Igor/0000-0002-4700-2340
Funding-Acknowledgement	Ministry of Education and Science of the Russian Federation {[}02.A03.21.0006]; Center of Excellence ``Radiation and Nuclear Technologies{''}; HASYLAB DESY {[}20110843]; Estonian Research Council {[}IUT2-26, PUT1081]
Funding-Text	This work was partially supported by the Ministry of Education and Science of the Russian Federation (Contract No.02.A03.21.0006) (the basic part of the government mandate), the Center of Excellence ``Radiation and Nuclear Technologies{''} (Competitiveness Enhancement Program of Ural Federal University, Russia), HASYLAB DESY (Project No.20110843), Estonian Research Council (projects IUT2-26 and PUT1081). We are grateful to Ludmila Isaenko for providing the crystals examined and Eugene Vasilchenko for recording a high-temperature TL glow curve.
Number-of-Cited-References	29
Usage-Count-Last-180-days	5
Usage-Count-Since-2013	5
Journal-ISO	Opt. Mater.
Doc-Delivery-Number	EY9FT