Hyperfine Interactions

, Volume 68, Issue 1–4, pp 421–424 | Cite as

The investigation of magnetite microcrystals

  • Zheng Hu
  • Xielong Yang
  • Yuanfu Hsia
  • Xinhua Jiang
  • Xinshu Chen
  • Yuanhui He
Magnetism and Magnetic Materials


Four samples of Fe3O4 microcrystals with average particle size of 72, 88, 100, 100Å have been investigated by Mössbauer spectroscopy, accompanied with x-ray diffraction and transmission electron microscopy. The experimental results show that the anisotropy energy constantK increases as the particle size decreases. It is found that a sudden drop ofK exists around Verwey transition temperatureT v andK remains constant in temperature well aboveT v . The Verwey temperatureT v for Fe3O4 microcrystals with different particle size is almost the same as that of bulk magnetite.


Spectroscopy Particle Size Microscopy Electron Microscopy Thin Film 
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  1. /1/.
    A. Tari, J. popplewell and S. W. Charles, D. St. P. Bunbury and K. M. Alves, J. Appl. Phys. 54(1983)3351ADSCrossRefGoogle Scholar
  2. /2/.
    S. Mørup, H. Topsoe and B. S. Clausen, Physica Scripta 25(1982)713ADSGoogle Scholar
  3. /3/.
    W. Winkler, Phys. Stat. Solidi(A) 84(1984)193MathSciNetGoogle Scholar
  4. /4/.
    Yu. F. Krupyanskii and I. P. Suzdalev, J. Physique 35(1974)C6–407Google Scholar
  5. /5/.
    H. Topsoe and S. Mørup, In Proc. Intern. Conf. on Mössbauer Spectroscopy, Vol. 1, Crakow, Poland (1975) ed. by A. Z. Hrynkiewich and J. A. Sawicki, p. 321Google Scholar
  6. /6/.
    S. Mørup and H. Topsoe, Appl. Phys. 11(1976)63ADSCrossRefGoogle Scholar
  7. /7/.
    R. Birringer, H. Gleiter, H. P. Klein and P. Marquardt, Phys. Lett. 102A(1984)365ADSGoogle Scholar
  8. /8/.
    S. Mørup, H. Topsoe and J. Lipka, J. Physique 37(1976)C6–287Google Scholar
  9. /9/.
    Z. Hu, X. Yang, R. Liu, X. Chen, Y. He and Y. Hsia, Hyp. Int. 57(1990)1871CrossRefGoogle Scholar
  10. /10/.
    X. Yang, X. Sun and N. Zhou, Appl. Phys. A 42(1987)65CrossRefGoogle Scholar
  11. /11/.
    S. Mørup, J. Magn. Magn. Mat. 37(1983)39ADSCrossRefGoogle Scholar

Copyright information

© J.C. Baltzer A.G., Scientific Publishing Company 1991

Authors and Affiliations

  • Zheng Hu
    • 1
  • Xielong Yang
    • 2
  • Yuanfu Hsia
    • 1
  • Xinhua Jiang
    • 3
  • Xinshu Chen
    • 4
  • Yuanhui He
    • 3
  1. 1.Department of PhysicsNanjing UniversityNanjingChina
  2. 2.Department of PhysicsEast China Normal UniversityShanghaiChina
  3. 3.Central LaboratoryDepartment of Geological and Mineral ProductsJiangsu ProvinceChina
  4. 4.Southwest Institute of Applied MagneticsMianyangChina

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