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Ganjali, M., Ganjali, M., Eskandari, A., Aminzare, M. (2013). Effect of Heat Treatment on Structural and Magnetic Properties of Nanocrystalline SrFe12O19 Hexaferrite synthesized by Co-Precipitation Method. Journal of Advanced Materials and Processing, 1(4), 41-48.
Mansoureh Ganjali; Monireh Ganjali; Arvin Eskandari; Masoud Aminzare. "Effect of Heat Treatment on Structural and Magnetic Properties of Nanocrystalline SrFe12O19 Hexaferrite synthesized by Co-Precipitation Method". Journal of Advanced Materials and Processing, 1, 4, 2013, 41-48.
Ganjali, M., Ganjali, M., Eskandari, A., Aminzare, M. (2013). 'Effect of Heat Treatment on Structural and Magnetic Properties of Nanocrystalline SrFe12O19 Hexaferrite synthesized by Co-Precipitation Method', Journal of Advanced Materials and Processing, 1(4), pp. 41-48.
Ganjali, M., Ganjali, M., Eskandari, A., Aminzare, M. Effect of Heat Treatment on Structural and Magnetic Properties of Nanocrystalline SrFe12O19 Hexaferrite synthesized by Co-Precipitation Method. Journal of Advanced Materials and Processing, 2013; 1(4): 41-48.

Effect of Heat Treatment on Structural and Magnetic Properties of Nanocrystalline SrFe12O19 Hexaferrite synthesized by Co-Precipitation Method

Article 6, Volume 1, Issue 4, Autumn 2013, Page 41-48  XML PDF (714.44 K)
Document Type: Research Paper
Authors
Mansoureh Ganjali email 1; Monireh Ganjali1; Arvin Eskandari1; Masoud Aminzare2
1Department of Nanotechnology and Advanced Materials, Material and Energy Research Center, karaj, Iran.
2Department of Materials and Metallurgical Engineering, Iran University of Science and Technology, Tehran, Iran
Abstract
Nanocrystalline strontium hexaferrite (SrFe12O19) powders have been successfully synthesized using the facile Co-precipitation method. The ferrite precursors were achieved from mixtures of strontium and ferric chloride in an aqueous medium without any surfactant and soft template. The as-received powders were calcined at 800 and 1000 ˚C for 2 hours in air. The final powders were characterized by X-ray diffraction (XRD), scanning electron microscopy (SEM), transmission electron microscopy (TEM), BET surface area analysis and Vibrating Sample Magnetometer (VSM). The effects of the calcination temperature on the phase composition, particle size and shape as well as the magnetic properties of the products have been investigated. The results indicated that the higher calcination temperature (1000 oC) resulted in higher particle sizes (98.1 nm), maximum saturation magnetization (60.53 emu/g), remanence value (36.23 emu/g) and less surface area (12 m2g-1). The magnetocrystalline anisotropy constant, K, calculated from the Stoner–Wohlfarth theory are increased by increasing temperature up to 15.1 (HA2/kg).
Keywords
Hexaferrite; Synthesis; Magnetic properties; Co-precipitation; nanocrystalline
Main Subjects
Materials synthesis and charachterization
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