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Comparative neutron and X-ray diffraction analysis of anionic and cationic ordering in rare-earth zirconates (Ln = La, Nd, Tb, Yb, Y)

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dc.contributor.authorBeskrovnyi, A. I.
dc.contributor.authorNeov, D. S.
dc.contributor.authorShchetinin, I. V.
dc.contributor.authorPonkratov, K. V.
dc.contributor.authorYastrebtsev, A. A.
dc.contributor.authorPopov, V. V.
dc.contributor.authorMenushenkov, A. P.
dc.contributor.authorЯстребцев, Алексей Алексеевич
dc.contributor.authorПопов, Виктор Владимирович
dc.contributor.authorМенушенков, Алексей Павлович
dc.date.accessioned2024-11-25T17:52:13Z
dc.date.available2024-11-25T17:52:13Z
dc.date.issued2020
dc.description.abstract© 2020 Elsevier B.V.The influence of the cation radii ratio (γ = 1.37–1.61) and temperature of the isothermal annealing on the specific features of fluorite – pyrochlore phase transition in Ln2O3: ZrO2 = 1:2 (Ln = La, Nd, Tb, Yb, and Y) systems was investigated by means of Neutron (NPD) and X-ray (XRD) powder diffractions as well as Raman spectroscopy. It was shown that with a decrease in the radius of the Ln cation in the La → Nd → Tb → Y → Yb series, the following sequence of phase transitions is observed: the pyrochlore structure → the structure of defect fluorite → the rhombohedral δ-phase. Significant advantages of NPD over XRD are demonstrated for determining the structural features of the anion sublattice. A detailed description of the parameters of the vibrational modes in Raman spectra for samples with a pyrochlore type of ordering is given, depending on the refined structural parameters.
dc.identifier.citationComparative neutron and X-ray diffraction analysis of anionic and cationic ordering in rare-earth zirconates (Ln = La, Nd, Tb, Yb, Y) / Beskrovnyi, A.I. [et al.] // Journal of Alloys and Compounds. - 2020. - 832. - 10.1016/j.jallcom.2020.154863
dc.identifier.doi10.1016/j.jallcom.2020.154863
dc.identifier.urihttps://www.doi.org/10.1016/j.jallcom.2020.154863
dc.identifier.urihttps://www.scopus.com/record/display.uri?eid=2-s2.0-85083005885&origin=resultslist
dc.identifier.urihttp://gateway.webofknowledge.com/gateway/Gateway.cgi?GWVersion=2&SrcAuth=Alerting&SrcApp=Alerting&DestApp=WOS_CPL&DestLinkType=FullRecord&UT=WOS:000541714600006
dc.identifier.urihttps://openrepository.mephi.ru/handle/123456789/20541
dc.relation.ispartofJournal of Alloys and Compounds
dc.titleComparative neutron and X-ray diffraction analysis of anionic and cationic ordering in rare-earth zirconates (Ln = La, Nd, Tb, Yb, Y)
dc.typeArticle
dspace.entity.typePublication
oaire.citation.volume832
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