フェライト磁石材料に関する研究 Research on Ferrite Magnet Materials

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These experiments were carried out to investigate the effect of addition of various rare-earth oxides on the magnetic and physical properties of anisotropic or isotropic M-type (M=Ca, Sr, Pb, Ba) ferrites, and to make clear the effect of the use of a new manufacturing method and the additives on the properties of anisotropic W-type (W=Sr, Ba, Pb) ferrites.<BR>In M-type ferrites, it was found the rare-earth oxide addition to these compounds (stoichiometric composition) was very useful in stabilizing the magnetoplumbite structure, and that these compound had excellent properties as a permanent magnet.<BR>In M<SUP>2+</SUP>Zn<SUB>2</SUB>-W-type ferrites, a new valuable manufacturing method which is characterized by the addition of M<SUP>2+</SUP>O(PbO, SrO, BaO) after semisintering treatment without atmosphere control was established. It was found that this process was very useful in stabilizing the W-type hexagonal structure, and in improving the magnetic properties of these compounds. It cleared that the effective additives for the W-type ferrites are CaO, SiO<SUB>2</SUB>, Na<SUB>2</SUB>O, La<SUB>2</SUB>O<SUB>3</SUB>, MgO, Al<SUB>2</SUB>O<SUB>3</SUB>.

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), 5-12, 1996-01-15 

    Japan Society of Powder and Powder Metallurgy

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各種コード

  • NII論文ID(NAID)
    10002010926
  • 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
    3918026
  • 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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