Please use this identifier to cite or link to this item: http://hdl.handle.net/10995/101940
Title: Magnetic and microwave properties of SrFe12O19/MCe0.04Fe1.96O4 (M = Cu, Ni, Mn, Co and Zn) hard/soft nanocomposites
Authors: Algarou, N. A.
Slimani, Y.
Almessiere, M. A.
Alahmari, F. S.
Vakhitov, M. G.
Klygach, D. S.
Trukhanov, S. V.
Trukhanov, A. V.
Baykal, A.
Issue Date: 2020
Publisher: Elsevier Editora Ltda
Citation: Magnetic and microwave properties of SrFe12O19/MCe0.04Fe1.96O4 (M = Cu, Ni, Mn, Co and Zn) hard/soft nanocomposites / N. A. Algarou, Y. Slimani, M. A. Almessiere, et al. — DOI 10.1016/j.jmrt.2020.03.113 // Journal of Materials Research and Technology. — 2020. — Vol. 9. — Iss. 3. — P. 5858-5870.
Abstract: This paper reports the synthesis, structural characteristics and magnetism of SrFe12O19/MCe0.04Fe1.96O4 (M = Cu, Ni, Mn, Co and Zn) hard/soft nanocomposites. The hard/soft compositions were manufactured via a one-pot reactions citrate sol-gel approach. The hard/soft phases formation was confirmed using XRD, SEM, TEM and HRTEM techniques. M vs. H (Magnetization measurements) were done at unbent temperature and 10 K. Smoothed M against H loops and single peaks in dM/dH vs. H curves were noticed in SrFe12O19/MnCe0.04Fe1.96O4, SrFe12O19/CuCe0.04Fe1.96O4 and SrFe12O19/ZnCe0.04Fe1.96O4 hard/soft nanocomposites. This indicated the manifestation of well exchange-coupled effect among hard and soft phases in these composites. However, SrFe12O19/CoCe0.04Fe1.96O4 and SrFe12O19/NiCe0.04Fe1.96O4 hard/soft nanocomposites showed non-well smoothed M against H loops and two peaks in dM/dH versus H plots, indicating that the dipolar interactions are unimportant compared to exchange-coupling behavior. Among all prepared nanocomposites, the SrFe12O19/MnCe0.04Fe1.96O4 hard/soft nanocomposite showed the highest exchange-coupling behavior. Microwave properties of the SrFe12O19/MCe0.04Fe1.96O4 (M = Cu, Ni, Mn, Co and Zn) hard/soft nanocomposites were investigated using coaxial method with applied frequency values fall between 2 and 18 GHz. Reflection losses were calculated from frequency dependences of the imaginary and real parts of permeability and permittivity. The correlation between the chemical composition of the spinel phase (A-cation) and microwave properties of composites. Most intensive electromagnetic absorption was observed for Ni- and Mn-spinels. This is can be a result of the differences in electron shell configuration and radii for A-site ions in the spinel phase. Change of the absorption mechanisms (transition from ionic polarization to dipole polarization) was observed. © 2020 The Authors. Published by Elsevier B.V. This is an open access article under the CC BY-NC-ND license (http://creativecommons.org/licenses/by-nc-nd/4.0/).
Keywords: CITRATE SOL-GEL APPROACH
EXCHANGE-COUPLING BEHAVIOR
HARD/SOFT
MAGNETIC PROPERTIES
MICROWAVE PROPERTIES
STRUCTURE
COBALT
EXCHANGE COUPLING
POLARIZATION
SOL-GELS
ABSORPTION MECHANISMS
CHEMICAL COMPOSITIONS
DIPOLAR INTERACTION
DIPOLE POLARIZATION
FREQUENCY DEPENDENCE
IONIC POLARIZATION
MAGNETIZATION MEASUREMENTS
STRUCTURAL CHARACTERISTICS
NANOCOMPOSITES
URI: http://hdl.handle.net/10995/101940
Access: info:eu-repo/semantics/openAccess
SCOPUS ID: 85083972756
PURE ID: 13403222
ISSN: 22387854
DOI: 10.1016/j.jmrt.2020.03.113
metadata.dc.description.sponsorship: The work was supported by the Russian Science Foundation (agreement number 19-72-10071 ). Also Authors are thank to the Institute for Research & Medical Consultations (Projects Application No. 2018-IRMC-S-2 ) of Imam Abdulrahman Bin Faisal University (IAU – Saudi Arabia) for financial and technical supports.
RSCF project card: 19-72-10071
Appears in Collections:Научные публикации, проиндексированные в SCOPUS и WoS CC

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