針状微粒子から作製した配向性マンガン亜鉛フェライト Crystal Oriented Manganese Zinc Ferrites Made from Acicular Fine Particles

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Acicular manganese zinc ferrite particles were prepared and then a sintered manganese zinc ferrite with well crystal-orientation was experimentally fabricated by using the acicular particles.<BR>As the starting materials of the acicular manganese zinc ferrite particles, the acicular α -FeOOH, Mn(C<SUB>5</SUB>H<SUB>7</SUB>O<SUB>2</SUB>)<SUB>3</SUB> and Zn(C<SUB>5</SUB>H<SUB>7</SUB>O<SUB>2</SUB>)<SUB>2</SUB> were used and the mixture of these materials were sintered at 900°C for 4 hours in a nitrogen atmosphere. The highest values obtained by measurement for the sintered particles were saturation magnetization of 68.8 emu/g (0.458 Wb/m2 ), coercivity of 81 Oe (6.5 kA/m), the length of the long axis of 2μm and aspect ratio of 15 respectively. As a result of chemical etching of the acicular particle, it has become apparent that several crystallites are linearly aligned in a particle.<BR>The acicular manganese zinc ferrite particles were pressed and formed to a shape under the magnatic field of 12 kOe (960 kA/m) by wet method, and then sintered at 1250°C in air. The sintered manganese zinc ferrite strongly exhibited a uniaxial crystal-orientation similar to that of the manganese zinc ferrite single crystal.

収録刊行物

  • 粉体および粉末冶金  

    粉体および粉末冶金 43(1), 36-40, 1996-01-15 

    Japan Society of Powder and Powder Metallurgy

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各種コード

  • NII論文ID(NAID)
    10002011020
  • NII書誌ID(NCID)
    AN00222724
  • 本文言語コード
    JPN
  • 資料種別
    ART
  • ISSN
    05328799
  • NDL 記事登録ID
    3918031
  • NDL 雑誌分類
    ZP41(科学技術--金属工学・鉱山工学)
  • NDL 請求記号
    Z17-274
  • データ提供元
    CJP書誌  CJP引用  NDL  J-STAGE 
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