Hard magnetic properties of nanosized Sr(Fe,Al)12O19 hexaferrites obtained by Pechini method |
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| Affiliation: | 1. International Training Institute for Materials Science (ITIMS), Hanoi University of Science and Technology (HUST), No.1 Dai Co Viet, Hanoi, Vietnam;2. Advanced Institute of Science and Technology (AIST), Hanoi University of Science and Technology (HUST), No.1 Dai Co Viet, Hanoi, Vietnam;3. University of Transportation and Communication, No. 3 Cau Giay, Hanoi, Vietnam;4. Vietnam-Japan International Institute for Science of Technology (VJIIST), Hanoi University of Science and Technology (HUST), No.1 Dai Co Viet, Hanoi, Vietnam;1. Department of Physics, Gebze Technical University, 41400 Gebze, Kocaeli, Turkey;2. Institute of Physics, Azerbaijan National Academy of Sciences, AZ – 1143, Baku, Azerbaijan;3. Physics Engineering Department, Faculty of Science and Letters, Istanbul Technical University, 34469 Maslak, Istanbul, Turkey;1. College of Physics and Energy, Fujian Normal University, Fujian Provincial Key Laboratory of Quantum Manipulation and New Energy Materials, Fuzhou 350117, China;2. Fujian Provincial Collaborative Innovation Center for Optoelectronic Semiconductors and Efficient Devices, Xiamen 361005, China;1. Department of Physics, Maulana Azad National Institute of Technology (MANIT), Bhopal 462003, M.P., India;2. Department of Physics, Osmania University, Hyderabad 500007, A.P., India;1. Facultad de Ingeniería, Universidad Nacional del Comahue, Buenos Aires 1400, 8300 Neuquén, Argentina;2. Instituto de Investigación y Desarrollo en Ingeniería de Procesos, Biotecnología y Energías Alternativas – CONICET-UNCo, Argentina;3. Dpto. de Física, Universidad Nacional del Sur, Bahía Blanca, Argentina;4. Instituto de Física – UNS-CONICET, Argentina;5. Centro Atómico Bariloche e Instituto Balseiro, Avda. Bustillo 9500, 8400 Bariloche, Argentina;6. CONICET, Argentina |
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| Abstract: | In this work, we report the magnetic properties of isotropic M-type SrFe12−xAlxO19 (x=0.0,1.5) hexaferrites synthesized by means of Pechini method. A polycrystalline distribution of fine grains was verified by Transmission Electron Microscopy for both compositions, with average sizes below 60 nm. Remarkable coercivity values within the range 500–850 kA/m were attained as a consequence of a combined effect of grain size refinement together with an enhancement of the anisotropy field afforded by the incorporation of the Al3+ cations into the hexagonal crystal structure. |
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| Keywords: | A. Magnetic materials A. Ceramics B. Chemical synthesis C. X-ray diffraction D. Magnetic properties |
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