Synthesis and Properties of the Ba2PrWO6 Double Perovskite
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...
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Veröffentlicht in: | Inorganic chemistry 2024-06, Vol.63 (22), p.10194-10206 |
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creator | Wlodarczyk, Damian Amilusik, Mikolaj Kosyl, Katarzyna M. Chrunik, Maciej Lawniczak-Jablonska, Krystyna Przybylinska, Hanka Kosmela, Paulina Strankowski, Michal Bulyk, Lev-Ivan Tsiumra, Volodymyr Islam, Rajibul Autieri, Carmine Xue, Fei Zajac, Marcin Lysak, Anastasiia Minikayev, Roman Bockowski, Michal Suchocki, Andrzej |
description | 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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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.</description><identifier>ISSN: 0020-1669</identifier><identifier>EISSN: 1520-510X</identifier><identifier>DOI: 10.1021/acs.inorgchem.4c00567</identifier><identifier>PMID: 38767516</identifier><language>eng</language><publisher>American Chemical Society</publisher><ispartof>Inorganic chemistry, 2024-06, Vol.63 (22), p.10194-10206</ispartof><rights>2024 The Authors. Published by American Chemical Society</rights><rights>2024 The Authors. 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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.</abstract><pub>American Chemical Society</pub><pmid>38767516</pmid><doi>10.1021/acs.inorgchem.4c00567</doi><tpages>13</tpages><orcidid>https://orcid.org/0000-0002-5923-7569</orcidid><orcidid>https://orcid.org/0000-0002-5008-8165</orcidid><orcidid>https://orcid.org/0000-0001-7126-1951</orcidid><orcidid>https://orcid.org/0000-0002-3114-6526</orcidid><oa>free_for_read</oa></addata></record> |
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title | Synthesis and Properties of the Ba2PrWO6 Double Perovskite |
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