Please use this identifier to cite or link to this item: http://hdl.handle.net/10995/118161
Title: Alterations in the magnetic and electrodynamic properties of hard-soft Sr0.5Ba0.5Eu0.01Fe12O19/NixCuyZnwFe2O4 nanocomposites
Authors: Almessiere, M. A.
Slimani, Y.
Attia, H.
Sheikh, S. I. M.
Sadaqat, A.
Vakhitov, M. G.
Klygach, D. S.
Sertkol, M.
Baykal, A.
Trukhanov, A. V.
Issue Date: 2021
Publisher: Elsevier Editora Ltda
Citation: Alterations in the magnetic and electrodynamic properties of hard-soft Sr0.5Ba0.5Eu0.01Fe12O19/NixCuyZnwFe2O4 nanocomposites / M. A. Almessiere, Y. Slimani, H. Attia et al. // Journal of Materials Research and Technology. — 2021. — Vol. 15. — P. 1416-1429.
Abstract: Hard/soft (H/S) Sr0.5Ba0.5Eu0.01Fe12O19/NixCuyZnwFe2O4 nanocomposites (NCs) were produced via a one-pot sol–gel auto-combustion procedure. Phase and surface analyses were performed using X-ray diffraction (XRD), scanning electron microscopy (SEM), transmission electron microscopy (TEM), and high-resolution transmission electron microscopy (HR-TEM). Magnetization measurements for H/S NCs with different x, y, and w ratios were investigated at two different temperatures (300 and 10 K). The M−H curves were not smooth for the different H/S NCs, revealing that the exchange interaction was incomplete. The derivative of the magnetization (dM/dH versus H) exhibited two separate peaks, confirming the non-coupled H/S mixtures. Maximum saturation magnetization (Ms) values of 93.9 and 63.1 emu/g were obtained at 10 and 300 K, respectively, for the H/S Sr0.5Ba0.5Eu0.01Fe11.99O19/Ni0.3Cu0.3Zn0.4Fe2O4 NC, which contained the highest content of Zn and the same contents of Ni and Cu within the soft magnetic phase. The calculated squareness ratios (SQR = Mr/Ms) were less than 0.5, indicating incomplete exchange coupling. The coercive field (Hc) of the produced NCs reached a maximum value of approximately 2485 Oe at 300 K and 2331 Oe at 10 K with a decrease in the Ms values to 56.9 emu/g at 300 K and 78.5 emu/g at 10 K for the H/S Sr0.5Ba0.5Eu0.01Fe11.99O19/Ni0.8Cu0.1Zn0.1Fe2O4 NC, which contained lower fractions of Zn and Cu and the highest fraction of Ni. The reflection/transmission-based waveguide approach was employed to investigate the electrodynamic properties of the H/S NC samples within a frequency band of 7–18 GHz. The reflection and transmission coefficients (S11/S21) were measured using a vector network analyzer (VNA) for the sample placed inside a waveguide. The frequency dispersions of the magnetic permeability and electric permittivity were calculated. © 2021 The Author(s)
Keywords: HARD-SOFT NANOCOMPOSITES
HEXAFERRITE
MAGNETIC PROPERTIES
MICROWAVE ABSORPTION
SPINEL FERRITES
COPPER
COPPER COMPOUNDS
ELECTRODYNAMICS
HIGH RESOLUTION TRANSMISSION ELECTRON MICROSCOPY
IRON COMPOUNDS
NANOCOMPOSITES
NICKEL COMPOUNDS
SCANNING ELECTRON MICROSCOPY
SOLS
STRONTIUM COMPOUNDS
ZINC
ZINC COMPOUNDS
ELECTRODYNAMIC PROPERTIES
HARD-SOFT NANOCOMPOSITE
HEXAFERRITES
MAGNETIZATION VALUES
MICROWAVE ABSORPTION
ONE POT
SOFT NANOCOMPOSITES
SOL-GEL AUTO-COMBUSTION
SPINEL FERRITES
X- RAY DIFFRACTIONS
SATURATION MAGNETIZATION
URI: http://hdl.handle.net/10995/118161
Access: info:eu-repo/semantics/openAccess
SCOPUS ID: 85114663575
ISSN: 22387854
DOI: 10.1016/j.jmrt.2021.08.137
metadata.dc.description.sponsorship: 2020-164-IRMC; King Fahd University of Petroleum and Minerals, KFUPM; Russian Science Foundation, RSF: 21-79-10115
This study was supported by the Deanship of Scientific Research of Imam Abdulrahman Bin Faisal University (Dammam, Saudi Arabia) through Grant No. 2020-164-IRMC . The authors also acknowledge support from the Center for Communication Systems and Sensing at KFUPM . Electromagnetic measurements and analysis were partially supported by the Russian Science Foundation (Agreement No. 21-79-10115).
RSCF project card: 21-79-10115
Appears in Collections:Научные публикации, проиндексированные в SCOPUS и WoS CC

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