針状バリウムフェライト微粒子の結晶構造 Crystal Structure of Acicular Barium Ferrite Fine Particles

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Acicular barium ferrite fine particles doped with Co<SUB>2+</SUB> ions and Ti<SUB>4+</SUB> ions were prepared by a conventional sintering method. We investigated fine structure of the acicular BaCo<SUB>x</SUB>Ti<SUB>x</SUB>Fe<SUB>12-2x</SUB>O<SUB>19</SUB> (X=0 and 0.7) particles using x-ray diffractometer (XRD) and high resolution transmission electron microscope (HR-TEM). From x-ray diffraction patterns of them, the acicular BaCo<SUB>x</SUB>Ti<SUB>x</SUB>Fe<SUB>12-2x</SUB>O<SUB>19</SUB> particles had a hexagonal structure of the magnetoplumbite type. These acicular BaCo<SUB>x</SUB>Ti<SUB>x</SUB>Fe<SUB>12-2x</SUB>O<SUB>19</SUB> particles had the long axis of about 1.0μm, the short axis of 0.09μm and the aspect ratio of about 11. It was observed by dark field images of TEM that one acicular BaCo<SUB>x</SUB>Ti<SUB>x</SUB>Fe<SUB>12-2x</SUB>O<SUB>19</SUB> particle consisted of some crystallites and the c-axis of them were lying perpendicular to the long axis of the acicular particle. Moreover, the a-axis of them was slightly deviated from the long axis. This crystal structure was not changed by doping of Co<SUP>2+</SUP> and Ti<SUP>4+</SUP> ions.

収録刊行物

  • 粉体および粉末冶金  

    粉体および粉末冶金 44(7), 663-667, 1997-07-15 

    Japan Society of Powder and Powder Metallurgy

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各種コード

  • NII論文ID(NAID)
    10002014222
  • 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
    4258099
  • 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  NDL  J-STAGE 
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