Synthesis and Properties of the Ba 2 PrWO 6 Double Perovskite.

Autor: Wlodarczyk D; Institute of Physics, Polish Academy of Sciences, Aleja Lotnikow 32/46, PL-02668 Warsaw, Poland., Amilusik M; Institute of High Pressure, Polish Academy of Sciences, Sokołowska 29/37, PL-01142 Warsaw, Poland., Kosyl KM; Institute of Physics, Polish Academy of Sciences, Aleja Lotnikow 32/46, PL-02668 Warsaw, Poland., Chrunik M; Military University of Technology, Gen. Sylwestra Kaliskiego 2, PL-00908 Warsaw, Poland., Lawniczak-Jablonska K; Institute of Physics, Polish Academy of Sciences, Aleja Lotnikow 32/46, PL-02668 Warsaw, Poland., Przybylinska H; Institute of Physics, Polish Academy of Sciences, Aleja Lotnikow 32/46, PL-02668 Warsaw, Poland., Kosmela P; Gdansk University of Technology, G. Narutowicza 11/12, PL-80233 Gdansk, Poland., Strankowski M; Gdansk University of Technology, G. Narutowicza 11/12, PL-80233 Gdansk, Poland., Bulyk LI; Institute of Physics, Polish Academy of Sciences, Aleja Lotnikow 32/46, PL-02668 Warsaw, Poland., Tsiumra V; Institute of Physics, Polish Academy of Sciences, Aleja Lotnikow 32/46, PL-02668 Warsaw, Poland., Islam R; Institute of Physics, Polish Academy of Sciences, Aleja Lotnikow 32/46, PL-02668 Warsaw, Poland.; Department of Physics, University of Alabama at Birmingham, Second Avenue 1720, South Birmingham, 35294 Alabama, United States., Autieri C; Institute of Physics, Polish Academy of Sciences, Aleja Lotnikow 32/46, PL-02668 Warsaw, Poland.; Consiglio Nazionale delle Ricerche CNR-SPIN, UOS Salerno, C. S. V. Ferreri 12, Fisciano, IT-84084 Salerno, Italy., Xue F; Department of Physics, University of Alabama at Birmingham, Second Avenue 1720, South Birmingham, 35294 Alabama, United States., Zajac M; Solaris Synchrotron NSRC, Jagiellonian University, Czerwone Maki 98, PL-30392 Cracow, Poland., Lysak A; Institute of Physics, Polish Academy of Sciences, Aleja Lotnikow 32/46, PL-02668 Warsaw, Poland., Minikayev R; Institute of Physics, Polish Academy of Sciences, Aleja Lotnikow 32/46, PL-02668 Warsaw, Poland., Bockowski M; Institute of High Pressure, Polish Academy of Sciences, Sokołowska 29/37, PL-01142 Warsaw, Poland., Suchocki A; Institute of Physics, Polish Academy of Sciences, Aleja Lotnikow 32/46, PL-02668 Warsaw, Poland.
Jazyk: angličtina
Zdroj: Inorganic chemistry [Inorg Chem] 2024 Jun 03; Vol. 63 (22), pp. 10194-10206. Date of Electronic Publication: 2024 May 20.
DOI: 10.1021/acs.inorgchem.4c00567
Abstrakt: We report details on the synthesis and properties of barium praseodymium tungstate, Ba 2 PrWO 6 , a double perovskite that has not been synthesized before. Room-temperature (RT) powder X-ray diffraction identified the most probable space group (SG) as monoclinic I 2/ m , but it was only slightly distorted from the cubic structure. X-ray photoelectron spectroscopy confirmed that the initial (postsynthesis) material contained praseodymium in both 3+ and 4+ charge states. The former (Pr 3+ ) disappeared after exposure to UV light at RT. Photoluminescence studies of Pr 3+ revealed that Ba 2 PrWO 6 is an insulator with a band gap exceeding 4.93 eV. Pressure-dependent Raman spectroscopy excluded the possibility of a phase transition up to 20 GPa; however, measurements between 8 and 873 K signified that there might be a change toward the lower symmetry SG below 200 K. Electron paramagnetic resonance spectra revealed the presence of interstitial oxygen which acts as a deep electron trap.
Databáze: MEDLINE
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