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Journal of the Korean Physical Society

, Volume 72, Issue 6, pp 731–736 | Cite as

Influence of Fabrication Conditions on the Structural and the Magnetic Properties of Co-doped BaFe12O19 Hexaferrites

  • Ngo Tran
  • Deok Hyeon Kim
  • Bo Wha Lee
Article

Abstract

BaFe11CoO19 hexaferrites were prepared by using a co-precipitation method and heat treatment. By changing the ion molar ratio of (Fe + Co)/Ba = (x + 1)/1, we found a clear difference in the crystalline structural and magnetic properties. Particularly, the magnetic properties became optimal at x = 11 - 13 based on the saturation magnetization and coercivity values. The effects of heat treatment on the morphological, structural and magnetic properties were assessed. With the results of thermal gravimetric analyses, X-ray diffraction patterns, and magnetic-field-dependent magnetization, we found that M-type hexaferrite nanocrystals start being formed at a temperature of 650°C, which was much lower than temperatures reported previously.

Keywords

Co-doped barium hexaferrite Co-precipitation method Heat treatment Magnetic properties 

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Copyright information

© The Korean Physical Society 2018

Authors and Affiliations

  1. 1.Department of Physics and Oxide Research CenterHankuk University of Foreign StudiesYonginKorea

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