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Journal of Materials Science

, Volume 28, Issue 19, pp 5247–5250 | Cite as

Hydrothermal synthesis of barium ferrite fine particles from goethite

  • H. Kumazawa
  • H. -M. Cho
  • E. Sada
Papers

Abstract

Barium ferrite fine particles were prepared from aqueous suspensions containing goethite (α-FeOOH) and barium hydroxide by a hydrothermal method. Barium ferrite particles of thin hexagonal plate shape could be produced from commercially available goethite with an Fe: Ba molar ratio of 7.2, whereas barium ferrite particles could be produced from synthesized goethite with a molar ratio of unity. The effects on the size of hexagonal platelike particles of such reaction conditions as temperature, stirring speed and alkali concentration were investigated. Particles of 0.6 to 0.8 μm mean size were prepared under the reaction conditions covered here.

Keywords

Polymer Ferrite Hydroxide Hexagonal Barium 
These keywords were added by machine and not by the authors. This process is experimental and the keywords may be updated as the learning algorithm improves.

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Copyright information

© Chapman & Hall 1993

Authors and Affiliations

  • H. Kumazawa
    • 1
  • H. -M. Cho
    • 1
  • E. Sada
    • 1
  1. 1.Department of Chemical EngineeringKyoto UniversityKyotoJapan

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