Journal of Magnetics

The Korean Magnetics Society (한국자기학회)
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Magnetic Property of α-Fe2O3 Nanoparticles Prepared by Sonochemistry and Take-off Technique

  • Koo, Y.S. (Department of Physics, Inha University) ;
  • Yun, B.K. (Department of Physics, Inha University) ;
  • Jung, J.H. (Department of Physics, Inha University)
  • Published : 2010.03.31
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Abstract

A new synthetic method for the formation of uniform $\alpha-Fe_2O_3$ nanoparticles was reported and their magnetic properties were investigated. The sonochemical synthesis and the subsequent take-off technique resulted in spherical shaped $\alpha-Fe_2O_3$ nanoparticles with an average diameter of 60 nm. The temperature- and applied magnetic field-dependent magnetization of the $\alpha-Fe_2O_3$ nanoparticles was explained by the sum of two contributions, i.e., the Morin transition and superparamagnetism, because the critical size for superparamagnetism was within the size variation of the nanoparticles.

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References

  1. G. Schmid, Nanoparticles: From Theory to Application, Wiley-VCH, Weinheim (2004).
  2. Y.-J. Suh, D.-S. Kil, K.-S. Chung, H.-S. Lee, and H. Shao, J. Magnetics 13, 106 (2008). https://doi.org/10.4283/JMAG.2008.13.3.106
  3. F. J. Morin, Phys. Rev. 78, 819 (1950). https://doi.org/10.1103/PhysRev.78.819.2
  4. J. O. Artmann, J. C. Murphy, and S. Foner, Phys. Rev. 138A, 912 (1965). https://doi.org/10.1103/PhysRev.138.A912
  5. N. Yamamoto, J. Phys. Soc. Jpn. 24, 23 (1968). https://doi.org/10.1143/JPSJ.24.23
  6. C. Rath, K. K. Sahu, and S. D. Kulkarni, Appl. Phys. Lett. 75, 4171 (1999). https://doi.org/10.1063/1.125572
  7. D. Jagadeesan, U. Mansoori, P. Mandal, A. Sundaresan, and M. Eswaramoorthy, Angew. Chem. Int. Ed. 47, 7685 (2008). https://doi.org/10.1002/anie.200802626
  8. L. Suber, D. Fiorani, P. Imperatori, S. Foglia, A. Montone, and R. Zysler, Nanostruct. Mater. 11, 797 (1999). https://doi.org/10.1016/S0965-9773(99)00369-4
  9. Y. S. Koo, K. M. Song, N. Hur, J. H. Jung, T-H. Jang, H. J. Lee, T. Y. Koo, Y. H. Jeong, J. H. Cho, and Y. H. Jo, Appl. Phys. Lett. 94, 032903 (2009). https://doi.org/10.1063/1.3073751
  10. J. H. Cho, S. G. Ko, Y. Ahn, and E. J. Choi, J. Magnetics 14, 124 (2009). https://doi.org/10.4283/JMAG.2009.14.3.124
  11. Y. S. Koo, D. H. Kim, and J. H. Jung, J. Korean Phys. Soc. 48, 677 (2006). https://doi.org/10.3938/jkps.48.677
  12. S. Mitra, S. Das, K. Mandal, and S. Chaudhuri, Nanotechnology 18, 275608 (2007). https://doi.org/10.1088/0957-4484/18/27/275608
  13. X. N. Xu, Y. Wolfus, A. Shaulov, Y. Yeshurun, I. Felner, I. Nowik, Y. Koltypin, and A. Gedanken, J. Appl. Phys. 91, 4611 (2002). https://doi.org/10.1063/1.1457544
  14. L. Haibo, G. Jie, Z. Weitao, C. Gang, and Y. Ruihuang, Chinese Sci. Bull. 42, 344 (1997). https://doi.org/10.1007/BF02882479
  15. F. Bodker, M. F. Hansen, C. B. Koch, K. Lefmann, and S. Morup, Phys. Rev. B 61, 6826 (2000). https://doi.org/10.1103/PhysRevB.61.6826

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