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

محورهای موضوعی : Materials synthesis and charachterization

Mansoureh Ganjali ¹ (Department of Nanotechnology and Advanced Materials, Material and Energy Research Center, karaj, Iran.)
Monireh Ganjali ² (Department of Nanotechnology and Advanced Materials, Material and Energy Research Center, karaj, Iran.)
Arvin Eskandari ³ (Department of Nanotechnology and Advanced Materials, Material and Energy Research Center, karaj, Iran.)
Masoud Aminzare ⁴ (Department of Materials and Metallurgical Engineering, Iran University of Science and Technology, Tehran, Iran)

تاریخ دریافت : 1392/09/14 تاریخ پذیرش : 1392/09/27 تاریخ انتشار : 1392/07/09

کلید واژه: Synthesis, Co-precipitation, Hexaferrite, Magnetic properties, nanocrystalline,

چکیده مقاله :

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).

منابع و مأخذ:

1. S. P. Gubin, Yu. A. Koksharov, G B. Khomutov, G. Yuyurkov, "Magnetic nanoparticles: preparation, structure and properties",.Russ. Chem. Rev. Vol. 74, 2005, pp. 489 - 520.


2. M. G.Hasab, S. S. A. Ebrahimi, A. Badiei, “An investigation on physical properties of strontium hexaferrite nanopowder synthesized by a sol–gel auto-combustion process with addition of cationic surfactant”, J. Eur. Ceram. Soc., Vol. 27, 2007, pp. 3637–3640.


3. C. A. Stergiou, G. Litsardakis, “Electromagnetic properties of Ni and La doped strontium hexaferrites in the microwave region”, J. Alloys Compd., Vol. 509, 2011, pp. 6609-6615.


4. A. Eskandari, M. Aminzare, H. Hassani, H. Barounian, S. Hesaraki, S. K. Sadrnezhaad, “Densification Behavior and Mechanical Properties of Biomimetic Apatite Nano-crystals”, Curr. Nanosci, Vol. 7, 2011, pp. 776-780.


5. A. Eskandari, M. Aminzare, Z. Razavi Hesabi, S. H. Aboutalebi, S.K. Sadrnezhaad, “Effect of high energy ball milling on compressibility and sintering behavior of alumina nanoparticles”. Ceram. Int., Vol. 38, 2012, pp. 2627-2632.


6. S. Dursun, R. Topkaya, N. Akdoğan, S.Alkoy, “Comparison of the structural and magnetic properties of submicron barium hexaferrite powders prepared by molten salt and solid state calcination routes”, Ceram. Int., Vol. 38, 2012, pp. 3801-3806.


7. L. Hongbing., W. Shimin., L. Zhao, L. Jinchai, D. Binghai, X. Zuxun, “Hierarchical ZnO microarchitectures assembled by ultrathin nanosheets: hydrothermal synthesis and enhanced photocatalytic activity”, J. Mater. Chem., Vol. 21, 2011, pp. 4228–4234.


8. D. Primc,M.Drofenik, D.Makovec, “Low-Temperature Hydrothermal Synthesis of Ultrafine Strontium Hexaferrite Nanoparticles”, Eur. J. Inorg. Chem., Vol. 2011, 2011, pp. 3802-3809.


9. A. Ataie, S.Heshmati-Manesh, “Synthesis of ultra-fine particles of strontium hexaferrite by a modified co-precipitation method”, J. Eur. Ceram. Soc., Vol. 21, 2001, pp.
   1951–1955.


10. Yi, Yang., B. Zhang, W. Xu, Shi, N. Zhou, H. Lu, “Microwave absorption studies of W-hexaferrite prepared by co-precipitation/mechanical milling”, J. Magn. Magn. Mater., Vol. 265, 2003, pp. 119-122.


11. Z. F. Zi, Y. P. Sun, X. B. Zhu, Z. R. Yang, J. M. Dai, W. H. Song, “Structural and magnetic properties of SrFe12O19 hexaferrite synthesized by a modified chemical co-precipitation method”, J. Magn. Magn. Mater., Vol. 320, 2008, pp.
    2742-2746.


12. M. Jean, V. Nachbaur, J. Bran, J. Le Breton, “Synthesis and characterization of SrFe12O19 powder obtained by hydrothermal Process”, J. Alloys Compd., Vol. 496, 2010, pp. 306-312.


13. J. Fang, J. Wang, L. Gan, S. Ng, J. Ding, X.Liu, “Fine Strontium Ferrite Powders from an Ethanol-Based Microemulsion”, J. Am. Ceram. Soc.,Vol. 83, 2000, pp.
    1049–1055.


14. H. Shang, J. Wang, Q. Liu,“Synthesis and characterization of nanocrystalline BaFe12O19 obtained by using glucose as a fuel”. Mater. Sci. Eng., A, Vol. 456, 2007, pp. 30–132.


15. J. Becker, K. R. Raghupathi, J. St.Pierre, D. Zhao, and R. T. Koodali, “Tuning of the Crystallite and Particle Sizes of ZnO Nanocrystalline Materials in Solvothermal Synthesis and Their Photocatalytic Activity for Dye Degradation”, J. Phys. Chem. C, Vol. 115, 2011, pp. 13844–13850.


16. S. Kanagesan, S. Jesurani, R. Velmurugan, T.Kalaivani, “Preparation and magnetic properties of Ni–Zr doped barium strontium hexaferrite”, J Mater Sci: Mater Electron, Vol. 23, 2012, pp. 952–955.


17. Y. Li, Q. Wang, and H. Yang, “Synthesis,characterization and magnetic properties on nanocrystalline BaFe12O19 ferrite”, Curr. Appl Phys., Vol. 9, 2009, pp. 1375-1380.


18. Y. Fu, Ch-H Lin, “Fe/Sr ratio effect on magnetic properties of strontium ferrite powders synthesized by microwave-induced combustion process”, J. Alloys Compd., Vol. 386, 2005, pp.222–227.


19. W. Zhanyong, Z. Liuming, L. Jieli, Q. Huichun, Z. Yuli, F. Yongzheng, J. Minglin, X. Jiayue, “Microwave-assisted synthesis of SrFe12O19 hexaferrites”, J. Magn. Magn. Mater., Vol. 322, 2010, pp.2782–2785.


20. Ch-Sh. Lin, Ch-Ch. Hwang, T-H. Huang, G-P. Wang, Ch-H. Peng, “Fine powders of SrFe12O19 with SrTiO3 additive prepared via a quasi-dry combustion synthesis route”. Mater. Sci. Eng., B, Vol. 139, 2007, pp. 24–36.