发明名称 PERMANENT MAGNET AND METHOD FOR PREPARATION THEREOF
摘要 <p>A method for preparing a ferrite magnet, wherein a ferrite having a hexagonal W type magneto-plumbite structure is added to a ferrite which has a hexagonal M type magneto-plumbite structure and in which a part of Sr, Ba, Pb or Ca has been substituted with La and optionally at least one element selected from among rare earth elements including Y and Bi during pulverization to a fine powder; and a ferrite magnet prepared by using the method. The above method which comprises the addition of a ferrite having a hexagonal W type magneto-plumbite structure to a ferrite having a hexagonal M type magneto-plumbite structure during the pulverization allows the preparation of a ferrite magnet having improved magnetic characteristics with the addition of a reduced amount of an element such as Co, Ni, Mn or Zn.</p>
申请公布号 WO02063641(A1) 申请公布日期 2002.08.15
申请号 WO2002JP00995 申请日期 2002.02.06
申请人 SUMITOMO SPECIAL METALS CO., LTD.;ODA, ETSUSHI;HOSOKAWA, SEIICHI;TOYOTA, SACHIO 发明人 ODA, ETSUSHI;HOSOKAWA, SEIICHI;TOYOTA, SACHIO
分类号 C04B35/40;C01G49/00;C04B35/26;G11B5/706;H01F1/10;H01F1/11;H01F1/113;H01F1/34;H01F41/02;(IPC1-7):H01F1/11 主分类号 C04B35/40
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