Journal of the Korean Crystal Growth and Crystal Technology (한국결정성장학회지)

The Korea Association of Crystal Growth (한국결정성장학회)
권호 표지

Effect of annealing on the magnetic behavior and microstructures of spherical NiZn ferrite particle prepared by ultrasonic spray pyrolysis

  • Nam, Joong-Hee (System Module Group, Korea Institute of Ceramic Engineering and Technology)
  • Published : 2007.02.28
Download PDF
⟨ Previous Next ⟩

Abstract

The spherical NiZn ferrite particles were prepared by ultrasonic spray pyrolysis with mixed solution of aqueous metal nitrates. The NiZn ferrite particle was observed with nano-sized primary particles of about 10 nm or less before annealing which represented as paramagnetic behavior measured at 77 K and room temperature. The typical abnormal growth of primary particles like polyhedral primary particles was observed by annealing at 1273 K with Zn-concentration dependency. The XRD patterns showed good crystallinity of NiZn ferrite powder after annealing. In annealing process, the intra-particle sintering phenomenon was observed and the spherical particle morphology was collapsed at 1673 K. The saturation magnetization of NiZn ferrite powder for each annealing temperature was decreased with measuring temperature of $77{\sim}$300K.

Keywords

References

  1. X. Zhao, B. Zheng, H. Gu, C. Li, S. Zhang and P. D. Ownby, 'Preparation of phase homogeneous Mn-Zn ferrite powder by spray pyrolysis', J. Mater. Res. 14(7) (1999) 3073 https://doi.org/10.1557/JMR.1999.0412
  2. GL. Messing, S.-C. Zhang and GV Jayanthi, 'Ceramic powder synthesis by spray pyrolysis', J. Am. Ceram. Soc. 76 (2003) 2707 https://doi.org/10.1111/j.1151-2916.1993.tb04007.x
  3. J-H. Nam, SJ. Park and WK. Kim, 'Microstructure and magnetic properties of nanostructured NiZnCu ferrite powders synthesized by sol-gel process', IEEE Trans. Magn. 39(5) (2003) 3139 https://doi.org/10.1109/TMAG.2003.816032
  4. C. Caizer, 'Thermal dependence of the saturation magnetisation of $Mn_{0.6}Fe_{0.4}Fe_{2}O_{4}$ nanoparticles in a ferrofIuid', Solid State Comm. 124 (2002) 53 https://doi.org/10.1016/S0038-1098(02)00409-X
  5. L.J. Cote, AS. Teja, AP. Wilkinson and ZJ. Zhang, 'Continuous hydrothermal synthesis and crystallization of magnetic oxide nanoparticles', J. Mater. Res. 17(9) (2002) 2410 https://doi.org/10.1557/JMR.2002.0352
  6. YI. Kim, D. Kim and C.S. Lee, 'Synthesis and characterization of $CoFe_{2}O_{4}$ magnetic nanoparticles prepared by temperature-controlled coprecipitation method', Physica B 337 (2003) 42 https://doi.org/10.1016/S0921-4526(03)00322-3
  7. N. Millot, S.B. Colin, P. Perriat, GL. Caer. R. Welter and B. Malaman, 'Characterization of ferrites synthesized by mechanical alloying and soft chemistry', Nanostructured Materials 12 (1999) 641 https://doi.org/10.1016/S0965-9773(99)00206-8
  8. D. Zhang, KJ. Klabunde and C.M. Sorensen, 'Magnetization temperature dependence in iron nanoparticles', Phys. Rev. B 58(14) (1998) 167
  9. M. Wu, YD. Zhang, S. Hui, T.D. Xiao, S. Ge, WA Hines and J.I. Budnick, 'Temperature dependence of magnetic properties of $SiO_{2}$-coated Co nanoparticles', J. Magn. Magn. Mater. 268 (2004) 20 https://doi.org/10.1016/S0304-8853(03)00412-8
  10. B. Martinez, A. Roig, X. Obradors, E. Molins, A Rouanet and S. Monty, 'Magnetic properties of $\gamma-Fe_{2}O_{3}$ nanoparticles obtained by vaporization condensation in a solar furnace', J. Appl. Phys. 79(5) (1996) 2580 https://doi.org/10.1063/1.361125
  11. H. Yang, Z. Wang, L. Song, M. Zhao, J. Wang and H. Luo, 'A study on the coercivity and the magnetic anisotropy of the lithium ferrite nanocrystallite', J. Phys. D 29 (1996)2574 https://doi.org/10.1088/0022-3727/29/10/008
  12. S. Gangopadhyay, G.C. Hadjipanayis, B. Dale, C.M. Sorensen, KJ. Klabunde, V Papaefthymiou and A Kostikas, 'Magnetic properties of ultrafine iron particles', Phys. Rev. B 45(17) (1992) 9778 https://doi.org/10.1103/PhysRevB.45.9778
  13. A. Costa, E. Tortella, E. Neto, M. Morelli and R. Kiminami, 'Sintering of Ni-Zn ferrite nanopowders by the constant heating rate method', Mater. Res. 7(4) (2004) 523 https://doi.org/10.1590/S1516-14392004000400003
  14. J Smit and H. P.J. Wijn, 'FERRITES' (Philips' Tech. Lib., 1959), pp. 136-176
  15. J-H. Nam, WK. Kim, S.J. Park, D.-H. Yeo and H.T. Kim, 'Nanostructure and paramagnetic behavior of NiZn ferrite spherical particles', Phys. Stat. Sol. (a) 201(8) (2004) 1846 https://doi.org/10.1002/pssa.200304629
  16. GJ. Long and F. Grandjean, Mossbauer Spectroscopy Applied to Inorganic Chemistry (Vol. 3), Plenum Press, New York (1989)
  17. Y Itoh, I.W Lenggoro, S.E. Pratsinis and K. Okuyama, 'Agglomerate-free $BaTiO_{3}$ particles by salt-assisted spray pyrolysis', J. Mater. Res. 17(12) (2002) 3222 https://doi.org/10.1557/JMR.2002.0466