Impact of Nd3+ Substitutions on the Structure and Magnetic Properties of Nanostructured SrFe12O19 Hexaferrite


Semaida A.M. Darwish M.A. Salem M.M. Zhou D. Zubar T.I. Trukhanov S.V. Trukhanov A.V. Menushenkov V.P. Savchenko A.G.
October 2022MDPI

Nanomaterials
2022#12Issue 19

In this study, SrFe12-xNdxO19, where x = 0, 0.1, 0.2, 0.3, 0.4, and 0.5, was prepared using high-energy ball milling. The prepared samples were characterized by X-ray diffraction (XRD). Using the XRD results, a comparative analysis of crystallite sizes of the prepared powders was carried out by different methods (models) such as the Scherrer, Williamson–Hall (W–H), Halder–Wagner (H–W), and size-strain plot (SSP) method. All the studied methods prove that the average nanocrystallite size of the prepared samples increases by increasing the Nd concentration. The H–W and SSP methods are more accurate than the Scherer or W–H methods, suggesting that these methods are more suitable for analyzing the XRD spectra obtained in this study. The specific saturation magnetization (σs), the effective anisotropy constant (Keff), the field of magnetocrystalline anisotropy (Ha), and the field of shape anisotropy (Hd) for SrFe12-xNdxO19 (0 ≤ x ≤ 0.5) powders were calculated. The coercivity (Hc) increases (about 9% at x = 0.4) with an increasing degree of substitution of Fe3+ by Nd3+, which is one of the main parameters for manufacturing permanent magnets.

ball milling , Halder–Wagner method , nanohexaferrite , Nd3+ doping , Williamson–Hall method

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Physical Materials Science Department, National University of Science and Technology MISiS, Moscow, 119049, Russian Federation
Physics Department, Faculty of Science, Damanhour University, Damanhour, 22516, Egypt
Physics Department, Faculty of Science, Tanta University, Al-Geish St, Tanta, 31527, Egypt
Electronic Materials Research Laboratory, Key Laboratory of the Ministry of Education & International Center for Dielectric Research, School of Electronic Science and Engineering, Xi’an Jiaotong University, Xi’an, 710049, China
Laboratory of Single Crystal Growth, South Ural State University, 76, Lenin Av, Chelyabinsk, 454080, Russian Federation
Laboratory of Magnetic Films Physics, SSPA “Scientific and Practical Materials Research Centre of NAS of Belarus”, 19, P. Brovki Str, Minsk, 220072, Belarus
Smart Sensor Systems Laboratory, Department of Electronic Materials Technology, National University of Science and Technology MISiS, Moscow, 119049, Russian Federation
L.N. Gumilyov Eurasian National University, Nur-Sultan, 010000, Kazakhstan

Physical Materials Science Department
Physics Department
Physics Department
Electronic Materials Research Laboratory
Laboratory of Single Crystal Growth
Laboratory of Magnetic Films Physics
Smart Sensor Systems Laboratory
L.N. Gumilyov Eurasian National University

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