Influence of the charge ordering and quantum effects in heterovalent substituted hexaferrites on their microwave characteristics

Alex Trukhanov, M.A. Almessiere, A. Baykal, S.V. Trukhanov, Y. Slimani, D.A. Vinnik, V.E. Zhivulin, A. Yu. Starikov, D.S. Klygach, M.G. Vakhitov, Tatiana Zubar, Daria Tishkevich, E.L. Trukhanova, M. Zdorovets

Research output: Contribution to journalArticlepeer-review

107 Scopus citations


M-type hexagonal ferrites with heterovalent substitutions (Nd3+-Zn2+ and Ti4+) were synthesized. X-Ray diffraction (XRD) powder patterns of Sr(Nd,Zn)xFe12-xO19 and BaFe12-xTixO19 (0.1 ≤ x ≤ 1.0) confirmed the single phase constitution of all investigated samples. High frequency magnetic (permeability), electrical (permittivity), and resonant properties were analyzed. Unexpected behavior in the permittivity and permeability as a function of frequency was observed. Appearance of two peaks for samples with x = 0.1 and 0.9 indicated mixed oxidation state for the Fe ions. Behavior for Sr(Nd,Zn)xFe12-xO19 (0.3 ≤ x ≤ 0.7) confirms the occurrence of the anomalous quantum effect, namely charge disproportionation. The permeability behavior of Ti-substituted samples with a double Fe oxidation state was theoretically discussed in terms of spin states crossover. The behavior of reflection losses for Sr(Nd,Zn)xFe12-xO19 and BaFe12-xTixO19 (0.1 ≤ x ≤ 1.0) samples was discussed in terms of the modalities of charge ordering in heterovalent substituted M-type hexaferrites.
Original languageEnglish (US)
Pages (from-to)1193-1202
Number of pages10
JournalJournal of Alloys and Compounds
StatePublished - Jun 2019
Externally publishedYes

Bibliographical note

KAUST Repository Item: Exported on 2021-03-12
Acknowledgements: The work was supported by Act 211 Government of the Russian Federation, contract № 02.A03.21.0011. And also it was performed with partial financial supports from the Ministry of Education and Science of the Russian Federation in the framework of Increase Competitiveness Program of NUST « MISiS» (grants No. П02-2017-2-4, No. К3-2018-026, No. К4-2017-041) and SUSU (grant No. 4.1346.2017/4.6). Financial supports from Institute for Research & Medical Consultations (IRMC) of Imam Abdulrahman Bin Faisal University (IAU – Saudi Arabia) are greatly acknowledged [Grant No. 2018-IRMC-S-1]. The Core Labs of King Abdullah University of Science and Technology (KAUST) are greatly acknowledged for their technical assistance. Electromagnetic measurements were performed at the expense of a grant from the Russian Science Foundation (project No. 18-79-00154).
This publication acknowledges KAUST support, but has no KAUST affiliated authors.

ASJC Scopus subject areas

  • Materials Chemistry
  • Mechanics of Materials
  • Metals and Alloys
  • Mechanical Engineering


Dive into the research topics of 'Influence of the charge ordering and quantum effects in heterovalent substituted hexaferrites on their microwave characteristics'. Together they form a unique fingerprint.

Cite this