Journal of Materials Science

, Volume 29, Issue 5, pp 1348–1351 | Cite as

Glass formation and crystallization of barium ferrite in the Na2O-BaO-Fe2O3-SiO2 system

  • C. -K. Lee
  • R. F. Speyer


Amorphous ribbons of approximate composition 0.13Na2O-0.30BaO-0.30Fe2O3-0.27SiO2 were successfully fabricated using roller-quenching, after melting at 1400‡C. Devitrification of the amorphous phase by annealing at 710‡C for 2 h formed a uniform distribution of barium ferrite (BaFe12O19) particles with a mean diameter of 55.88 nm. Other crystalline phases formed on heat treatment were BaFe2O4 and Na2Ba2Si2O7. Devitrified ribbons showed a saturation magnetization (MS) of 24.41 emu g−1 and a coercivity (HC) of 3.06 kOe.


Polymer Crystallization SiO2 Heat Treatment Ferrite 
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  1. 1.
    H. Tanigawa andH. Tanaka,Osaka Kogyo Gijutsu Shikenso Kiho 15 (1964) 285 (in Japanese).Google Scholar
  2. 2.
    B. T. Shirk andW. R. Bussem,J. Amer. Ceram. Soc. 53 (1970) 192.Google Scholar
  3. 3.
    O. Kubo, T. Ido andH. Yokoyama,ibid. Mag-18 (1982) 1122.Google Scholar
  4. 4.
    C. K. Lee andR. F. Speyer, Presentation 6-EP at 94th Annual Meeting of American Ceramic Society, Minneapolis, MN, 1992, manuscript in preparation.Google Scholar
  5. 5.
    A. Herczog,The Glass Industry (August 1967) 445.Google Scholar
  6. 6.
    M. B. Volf, “Chemical Approach to Glass”, Glass Science and Technology, Vol. 7 (Elsevier, New York, 1984) p. 347.Google Scholar
  7. 7.
    A. Dietzel,Glastechn. Ber. 22 (1948/49) 41.Google Scholar
  8. 8.
    Idem, ibid. 22 (1948/49) 81.Google Scholar
  9. 9.
    Idem, ibid. 22 (1948/49) 212.Google Scholar
  10. 10.
    K. Haneda, C. Miyakawa andH. Kojima,J. Amer. Ceram. Soc. 57 (1974) 354.Google Scholar
  11. 11.
    W. Roos,ibid. 63 (1980) 601.Google Scholar
  12. 12.
    T. Fujuwara,IEEE Trans. Magn. Mag-21 (1985) 1480.Google Scholar
  13. 13.
    Idem, ibid. Mag-23 (1987) 3125.Google Scholar

Copyright information

© Chapman & Hall 1994

Authors and Affiliations

  • C. -K. Lee
    • 1
  • R. F. Speyer
    • 1
  1. 1.School of Materials Science and EngineeringGeorgia Institute of TechnologyAtlantaUSA

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