Cu-Related Paramagnetic Centers in Cu- and (Cu,Y)-Doped ZrO2 Nanopowders

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dc.contributor.authorNosenko, Valentynaen_US
dc.contributor.authorVorona, Igoren_US
dc.contributor.authorTrachevskyi, Viacheslaven_US
dc.contributor.authorZagorodniy, Yuriyen_US
dc.contributor.authorOkulov, Sergeyen_US
dc.contributor.authorIsaieva, Oksanaen_US
dc.contributor.authorYukhymchuk, Volodymyren_US
dc.contributor.authorKulinich, Sergeien_US
dc.contributor.authorBorkovska, Lyudmylaen_US
dc.contributor.authorKhomenkova, Larysaen_US
dc.date.accessioned2025-03-13T08:30:19Z
dc.date.available2025-03-13T08:30:19Z
dc.date.issued2025
dc.description.abstractIn this work, we studied Cu-doped and (Cu,Y)-codoped ZrO2 nanopowders produced through a coprecipitation approach to identify the nature of Cu-related bulk and surface paramagnetic centers. We conducted EPR, NMR, and Raman scattering studies on Cu- and (Cu,Y)-doped ZrO2 powders calcined at different temperatures. At low calcination temperatures (400 ◦C) and low Cu loading (0.1–1.0 mol.% of CuO), the EPR signal was found to be attributed to surface-related Cu-H2O complexes. For powders with higher Cu content (up to 8.0 mol.% of CuO), the superparamagnetic signal associated with the formation of copper clusters was observed. At higher calcination temperatures, the destruction of Cu-related surface complexes promotes the incorporation of Cu2+ ions into the bulk of ZrO2 nanocrystals at Zr positions. Co-doping ZrO2 with Cu and Y was observed to facilitate the incorporation of Cu2+ ions into cation sites at lower calcination temperatures when compared with Cu-doped ZrO2.en_US
dc.identifier.citationCu-Related Paramagnetic Centers in Cu- and (Cu,Y)-Doped ZrO2 Nanopowders / Valentyna Nosenko, Igor Vorona, Volodymyr Trachevsky, Yuriy Zagorodniy, Sergey Okulov, Oksana Isaieva, Volodymyr Yukhymchuk, Sergei A. Kulinich, Lyudmyla Borkovska, Larysa Khomenkova // Materials. - 2025. - Vol. 18, Issue 3. - Art. no. 605. - https://doi.org/10.3390/ma18030605en_US
dc.identifier.issn1996-1944
dc.identifier.urihttps://doi.org/10.3390/ma18030605
dc.identifier.urihttps://ekmair.ukma.edu.ua/handle/123456789/33934
dc.language.isoenen_US
dc.relation.sourceMaterialsen_US
dc.statusfirst publisheden_US
dc.subjectzirconiaen_US
dc.subjectdopingen_US
dc.subjectcopperen_US
dc.subjectEPRen_US
dc.subjectNMRen_US
dc.subjectRamanen_US
dc.subjectparamagnetic centersen_US
dc.subjectarticleen_US
dc.titleCu-Related Paramagnetic Centers in Cu- and (Cu,Y)-Doped ZrO2 Nanopowdersen_US
dc.typeArticleen_US
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