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Synthesis and Properties of the Ba2PrWO6 Double Perovskite

Abstract

We report details on the synthesis and properties of barium praseodymium tungstate, Ba2PrWO6, 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 I2/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 (Pr3+) disappeared after exposure to UV light at RT. Photoluminescence studies of Pr3+ revealed that Ba2PrWO6 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.

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Category:
Articles
Type:
artykuły w czasopismach
Published in:
INORGANIC CHEMISTRY no. 63, pages 10194 - 10206,
ISSN: 0020-1669
Language:
English
Publication year:
2024
Bibliographic description:
Włodarczyk D., Amilusik M., Kosyl K. M., Chrunik M., Ławniczak-Jabłońska K., Przybylińska H., Kosmela P., Strankowski M., Bulyk L., Tsiumra V., Islam R., Autieri C., Xue F., Zając M., Lysak A., Minikayev R., Bockowski M., Suchocki A.: Synthesis and Properties of the Ba2PrWO6 Double Perovskite// INORGANIC CHEMISTRY -, (2024),
DOI:
Digital Object Identifier (open in new tab) 10.1021/acs.inorgchem.4c00567
Sources of funding:
  • Free publication
Verified by:
Gdańsk University of Technology

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