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dc.contributor.authorAlmessiere, M.A.
dc.contributor.authorGenc, F.
dc.contributor.authorSozeri, H.
dc.contributor.authorBaykal, A.
dc.contributor.authorTrukhanov, S., V
dc.contributor.authorTrukhanov, A., V
dc.date.accessioned2022-06-06T10:19:32Z
dc.date.available2022-06-06T10:19:32Z
dc.date.issued2019-02-26
dc.identifier.citationAlmessiere, M. A., Genc, F., Sozeri, H., Baykal, A., Trukhanov, S. V., & Trukhanov, A. V. (2019). Influence of charge disproportionation on microwave characteristics of Zn–Nd substituted Sr-hexaferrites. Journal of Materials Science: Materials in Electronics, 30(7), 6776–6785. doi:10.1007/s10854-019-00989-8
dc.identifier.issn1573-482X
dc.identifier.issn0957-4522
dc.identifier.doi10.1007/s10854-019-00989-8
dc.identifier.urihttp://hdl.handle.net/10754/678680
dc.description.abstractSr(Zn,Nd)xFe12−xO19 (0.0 ≤ x ≤ 1.0) nanohexaferrites (NHFs) were obtained using citrate sol–gel approach. XRD and FE-SEM analysis were performed to confirm the formation of Sr M-type hexaferrite. Main electrodynamics characteristics (frequency dependences of real and imaginary parts of the permittivity and permeability) were measured in the range 5–18 GHz (region of the natural ferromagnetic resonance). Permittivity and permeability data correlates well. All samples were characterized by peak on the frequency dependences due to electrical and magnetic losses respectively. However, for compounds with x = 0.1 and 0.9 we observed second peak (at 14–15 GHz). This was explained by double oxidation state for iron ions (Fe3+/Fe4+). Presence of the Fe4+ ions was due to heterovalent Zn2+ substitution. Absence of the second peak for compounds x = 0.3; 0.5 and 0.7 was explained by charge disproportionation (according to the following scheme: 2Fe4+ = Fe3+ + Fe5+) under the influence of the crystal field energy. It was demonstrated that modification of crystal and magnetic structures by heterovalent substitution leads to transformation the microwave characteristics (reflection losses).
dc.description.sponsorshipAuthors are grateful to the Institute for Research & Medical Consultations (IRMC) of Imam Abdulrahman Bin Faisal University for the financial assistance to pursue this research (Grant No. 2018-IRMC-S-1). The technical assistance provided by Core Labs of King Abdullah University of Science and Technology (KAUST) are highly appreciated. This work was carried out with partial financial support in part from the Ministry of Education and Science of the Russian Federation in the framework of Increase Competitiveness Program of NUST «MISiS» (Grants Nos. П02-2017-2-4 and К3-2018-026) and SUSU (Grant No. 4.1346.2017/4.6.).
dc.publisherSpringer Science and Business Media LLC
dc.relation.urlhttp://link.springer.com/10.1007/s10854-019-00989-8
dc.titleInfluence of charge disproportionation on microwave characteristics of Zn-Nd substituted Sr-hexaferrites
dc.typeArticle
dc.identifier.journalJOURNAL OF MATERIALS SCIENCE-MATERIALS IN ELECTRONICS
dc.identifier.wosutWOS:000467435300054
dc.contributor.institutionDepartment of Nanomedicine, Institute for Research and Medical Consultations (IRMC), Imam Abdulrahman Bin Faisal University, P.O. Box 34221, Dammam, Saudi Arabia
dc.contributor.institutionDepartment of Physics, College of Science, Imam Abdulrahman Bin Faisal University, P.O. Box 1982, Dammam, 31441, Saudi Arabia
dc.contributor.institutionTÜBITAK-UME, National Metrology Institute, P.O. Box 54, 41470, Gebze, Kocaeli, Turkey
dc.contributor.institutionSSPA “Scientific and Practical Materials Research Centre of NAS of Belarus”, 220072, Minsk, Belarus
dc.contributor.institutionSouth Ural State University, Chelyabinsk, Russia, 454080
dc.contributor.institutionNational University of Science and Technology MISiS, Moscow, Russia, 119049
dc.identifier.volume30
dc.identifier.issue7
dc.identifier.pages6776-6785
dc.identifier.eid2-s2.0-85062476541
kaust.acknowledged.supportUnitCore Labs


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