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Crystalline structures of Rb2UBr6 ionic conductor determined by neutron diffraction
Natl Ctr Nucl Res, Radioisotope Ctr POLATOM, Andrzeja Soltana 7, PL-05400 Otwock, Poland..
Univ Grenoble Alpes, CEA, IRIG, MEM,MDN, F-38000 Grenoble, France..
Uppsala University, Disciplinary Domain of Science and Technology, Chemistry, Department of Chemistry - Ångström, Inorganic Chemistry.
Uppsala University, Disciplinary Domain of Science and Technology, Chemistry, Department of Chemistry - Ångström, Inorganic Chemistry.
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2020 (English)In: Nukleonika, ISSN 0029-5922, E-ISSN 1508-5791, Vol. 65, no 1, p. 3-11Article in journal (Refereed) Published
Abstract [en]

The neutron powder diffraction technique has been used for structural studies of Rb2UBr6 solid electrolyte as a function of temperature. The low-, room-, and high-temperature structures have been determined. At the temperature range of 4.2-80 K, the compound crystallizes in a monoclinic unit cell in the P21/c space group. At 80 K and 853 K, the compound crystallizes in a tetragonal unit cell in the P4/mnc space group. At 300 K, the lattice constants are a = b = 7.745(1) and c = 11.064(1) (a) over bar. At the temperature range of 853-960 K, a trigonal phase is observed in the P (3) over bar ml space group.

Place, publisher, year, edition, pages
INST NUCLEAR CHEMISTRY TECHNOLOGY , 2020. Vol. 65, no 1, p. 3-11
Keywords [en]
Neutron diffraction, Ionic conductivity, Solid electrolyte, Phase transitions, Crystalline structure, Uranium bromide
National Category
Inorganic Chemistry Materials Chemistry
Identifiers
URN: urn:nbn:se:uu:diva-409854DOI: 10.2478/nuka-2020-0001ISI: 000522353400001OAI: oai:DiVA.org:uu-409854DiVA, id: diva2:1429503
Available from: 2020-05-11 Created: 2020-05-11 Last updated: 2020-05-11Bibliographically approved

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Rundlöf, HåkanTellgren, Roland
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