Nanosized barium ferrite powders prepared by spray pyrolysis from citric acid solution

Min Ha Kim, Dae Soo Jung, Yun Chan Kang, Jeong Hoo Choi

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Abstract

Highly crystalline nanosized barium ferrite (BaFe12O19) powders were prepared by spray pyrolysis from a spray solution containing a high concentration of the metal components. The precursor powders obtained from the spray solution containing citric acid were amorphous with a porous and hollow structure. Purely crystalline and fine BaFe12O19 powders were obtained after post-treatment between 700 and 1000 °C and subsequent mechanical grinding in an agate mortar. The mean sizes of the powders post-treated at 700 and 1000 °C were 125 and 550 nm, respectively. The specific magnetization of the powders prepared from the spray solution containing citric acid was 57 emu/g.

Original languageEnglish
Pages (from-to)1933-1937
Number of pages5
JournalCeramics International
Volume35
Issue number5
DOIs
Publication statusPublished - 2009 Jul 1

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Keywords

  • A. Powders: chemical preparation
  • A. Powders: gas-phase reaction
  • C. Magnetic properties

ASJC Scopus subject areas

  • Electronic, Optical and Magnetic Materials
  • Ceramics and Composites
  • Process Chemistry and Technology
  • Surfaces, Coatings and Films
  • Materials Chemistry

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