記録材用強磁性酸化物微粉末
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概要
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The conditions had been studied for the formation of ferromagnetic precipitates of M<SUB>x</SUB>Fe<SUB>3</SUB>-<SUB>x</SUB>O<SUB>4</SUB> (M = divalent metal ion, such as Fe<SUB>2+</SUB>, Zn<SUB>2+</SUB>, Co<SUB>2+</SUB>or Mn<SUB>2+</SUB>), BaFe<SUB>12</SUB>O<SUB>19</SUB> and SrFe<SUB>12</SUB>O<SUB>19</SUB> in the presence of aqueos media. We succeeded in preparing the needlelike xCoFe<SUB>2</SUB>O<SUB>4</SUB>(1-x)Fe<SUB>3</SUB>O<SUB>4</SUB> and platelike 6xFe<SUB>3</SUB>O<SUB>4</SUB>(1-x) BaFe<SUB>12</SUB>O<SUB>19</SUB> particles for magnetic recording materials. This paper describes the conditions for their formation and their magnetic properties at room temperature.
- 社団法人 粉体粉末冶金協会の論文
- 1995-06-15