S. I. Kalinichenko, S. L. Korableva, M. S. Pudovkin, R. M. Rakhmatullin, A. A. Rodionov
{"title":"EPR of Ceria Nanoparticles Doped with Praseodymium and Terbium Ions","authors":"S. I. Kalinichenko, S. L. Korableva, M. S. Pudovkin, R. M. Rakhmatullin, A. A. Rodionov","doi":"10.1134/S1062873824710456","DOIUrl":null,"url":null,"abstract":"<p>CeO<sub>2</sub> (ceria) nanoparticles doped with praseodymium and terbium were synthesized in two different ways, the CeO<sub>2</sub>:Pr was prepared by the solid-state reaction at room temperature, and the CeO<sub>2</sub>:Tb was prepared by co-precipitated method from aqueous solution. Electron paramagnetic spectroscopy was applied to study both types of ceria nanoparticles. It was found that praseodymium and terbium ions are mainly in a 3+ valence state, which means, they are non-Kramers ions. The charge compensators are most probably situated in the closest environment of rare earth ions. The most intensive line with <i>g</i> ∼1.97, detected in both types of samples, consists of two contributions, the typical line for CeO<sub>2</sub> nanoparticles and the line from the Gd<sup>3+</sup> trace impurity, which has the same <i>g</i>-values.</p>","PeriodicalId":504,"journal":{"name":"Bulletin of the Russian Academy of Sciences: Physics","volume":"88 4 supplement","pages":"S633 - S637"},"PeriodicalIF":0.4800,"publicationDate":"2025-03-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":null,"platform":"Semanticscholar","paperid":null,"PeriodicalName":"Bulletin of the Russian Academy of Sciences: Physics","FirstCategoryId":"1085","ListUrlMain":"https://link.springer.com/article/10.1134/S1062873824710456","RegionNum":0,"RegionCategory":null,"ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q4","JCRName":"Physics and Astronomy","Score":null,"Total":0}
引用次数: 0
Abstract
CeO2 (ceria) nanoparticles doped with praseodymium and terbium were synthesized in two different ways, the CeO2:Pr was prepared by the solid-state reaction at room temperature, and the CeO2:Tb was prepared by co-precipitated method from aqueous solution. Electron paramagnetic spectroscopy was applied to study both types of ceria nanoparticles. It was found that praseodymium and terbium ions are mainly in a 3+ valence state, which means, they are non-Kramers ions. The charge compensators are most probably situated in the closest environment of rare earth ions. The most intensive line with g ∼1.97, detected in both types of samples, consists of two contributions, the typical line for CeO2 nanoparticles and the line from the Gd3+ trace impurity, which has the same g-values.
期刊介绍：
Bulletin of the Russian Academy of Sciences: Physics is an international peer reviewed journal published with the participation of the Russian Academy of Sciences. It presents full-text articles (regular, letters to the editor, reviews) with the most recent results in miscellaneous fields of physics and astronomy: nuclear physics, cosmic rays, condensed matter physics, plasma physics, optics and photonics, nanotechnologies, solar and astrophysics, physical applications in material sciences, life sciences, etc. Bulletin of the Russian Academy of Sciences: Physics focuses on the most relevant multidisciplinary topics in natural sciences, both fundamental and applied. Manuscripts can be submitted in Russian and English languages and are subject to peer review. Accepted articles are usually combined in thematic issues on certain topics according to the journal editorial policy. Authors featured in the journal represent renowned scientific laboratories and institutes from different countries, including large international collaborations. There are globally recognized researchers among the authors: Nobel laureates and recipients of other awards, and members of national academies of sciences and international scientific societies.
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