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BaWO4:Ce Single Crystals Codoped with Na Ions

Institute of Physics, Faculty of Mechanical Engineering and Mechatronics, West Pomeranian University of Technology in Szczecin, Al. Piastów, 17, 70-310 Szczecin, Poland
Institute of Physics, Faculty of Physics, Astronomy and Informatics, Nicolaus Copernicus University, Grudziadzka 5, 87-100 Torun, Poland
Institute of Physics, Polish Academy of Sciences, Aleja Lotnikow 32/46, PL-02668 Warsaw, Poland
Author to whom correspondence should be addressed.
Crystals 2019, 9(1), 28;
Received: 26 November 2018 / Revised: 17 December 2018 / Accepted: 29 December 2018 / Published: 4 January 2019
(This article belongs to the Section Crystal Engineering)
Single crystals of BaWO4, BaWO4: 0.5 at. % Ce; BaWO4: 1 at. % Ce; BaWO4: 0.5 at. % Ce, 1 at. % Na; and BaWO4: 1 at. % Ce, 2 at. % Na were grown from an inductively heated iridium crucible by the Czochralski method on a Malvern MSR4 puller. They were investigated using Electron Paramagnetic Resonance (EPR) spectroscopy at helium temperatures. One isolated center of high (D2d or S4) symmetry was found and two or more other centers of lower symmetry were identified, depending on crystal doping. From the fitting using the EPR-NMR program, the following parameters of g-matrix for the high symmetry center were found: gx = 1.505, gy = 1.505, and gz = 2.731. The linewidth vs. temperature revealed an increasing exponential tendency with increasing temperature. It showed one phonon at the lower temperatures and a Raman + Orbach effect at the higher temperatures. Radioluminescence and pulse height spectra showed rather poor scintillation properties, without any contribution from cerium emission. View Full-Text
Keywords: scheelite; BaWO4; structural refinement; EPR; roadmap; local symmetry scheelite; BaWO4; structural refinement; EPR; roadmap; local symmetry
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MDPI and ACS Style

Kaczmarek, S.M.; Leniec, G.; Bodziony, T.; Fuks, H.; Kowalski, Z.; Drozdowski, W.; Berkowski, M.; Głowacki, M.; Witkowski, M.E.; Makowski, M. BaWO4:Ce Single Crystals Codoped with Na Ions. Crystals 2019, 9, 28.

AMA Style

Kaczmarek SM, Leniec G, Bodziony T, Fuks H, Kowalski Z, Drozdowski W, Berkowski M, Głowacki M, Witkowski ME, Makowski M. BaWO4:Ce Single Crystals Codoped with Na Ions. Crystals. 2019; 9(1):28.

Chicago/Turabian Style

Kaczmarek, Slawomir M.; Leniec, Grzegorz; Bodziony, Tomasz; Fuks, Hubert; Kowalski, Zbigniew; Drozdowski, Winicjusz; Berkowski, Marek; Głowacki, Michal; Witkowski, Marcin E.; Makowski, Michal. 2019. "BaWO4:Ce Single Crystals Codoped with Na Ions" Crystals 9, no. 1: 28.

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