Low temperature three-dimensional thermoluminescence spectra of undoped YVO4 single crystals grown by different techniques

S. Erdei, L. Kovács, Á Peto, J. Vandlik, P. D. Townsend, F. W. Ainger

Research output: Contribution to journalArticle

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Abstract

Three dimensional (3D) thermoluminescence (TL) spectra of two yttrium orthovanadate (YVO4) single crystals grown from YVO4 melt by the Czochralski (CZ) technique and one additional YVO4 crystal pulled from lithium-metavanadate (LiVO3) flux by the top seeded solution growth (TSSG) method were investigated after x-ray irradiation. The TL spectra were recorded in the 200-800 nm wavelength and 20-300 K temperature ranges before and after annealing of the crystals in an oxygen atmosphere. In spite of the different growth conditions the measured 3D TL spectra of the CZ samples show similar TL characteristics. The main TL emission appears around 450 nm, and between 200 and 250 K. Further weak emissions were also detected at 570, 600, 650, and 710 nm wavelengths, which might be attributed to unwanted impurities. The TL spectrum of the TSSG crystal markedly differs from that of the CZ crystals. On one hand the major TL appears at lower temperatures whereas on the other hand the emission spectrum exhibits a broader band around 500 nm, while the weak bands between 500 and 700 nm could not be detected. Based on these observations the different defect structures in YVO4 crystals are discussed in the article emphasizing that 3D TL measurement is a useful practical tool for the characterization and identification of YVO4 crystals grown by different methods.

Original languageEnglish
Pages (from-to)2567-2571
Number of pages5
JournalJournal of Applied Physics
Volume82
Issue number5
Publication statusPublished - Sep 1 1997

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thermoluminescence
single crystals
crystals
x ray irradiation
yttrium
wavelengths
crystal growth
emission spectra
lithium
broadband
atmospheres
impurities
annealing
defects
oxygen

ASJC Scopus subject areas

  • Physics and Astronomy(all)
  • Physics and Astronomy (miscellaneous)

Cite this

Low temperature three-dimensional thermoluminescence spectra of undoped YVO4 single crystals grown by different techniques. / Erdei, S.; Kovács, L.; Peto, Á; Vandlik, J.; Townsend, P. D.; Ainger, F. W.

In: Journal of Applied Physics, Vol. 82, No. 5, 01.09.1997, p. 2567-2571.

Research output: Contribution to journalArticle

Erdei, S. ; Kovács, L. ; Peto, Á ; Vandlik, J. ; Townsend, P. D. ; Ainger, F. W. / Low temperature three-dimensional thermoluminescence spectra of undoped YVO4 single crystals grown by different techniques. In: Journal of Applied Physics. 1997 ; Vol. 82, No. 5. pp. 2567-2571.
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