发明名称 OXIDE MAGNETIC MATERIAL FOR RESIN MOLD ELECTRONIC PART
摘要 <P>PROBLEM TO BE SOLVED: To provide an oxide magnetic material for a resin mold electronic part which has small deterioration in magnetic characteristic due to a resin mold and a small change in permeability when a DC current is superimposed. <P>SOLUTION: In the oxide magnetic material for a resin mold electronic part, main components are 51.5 mol%-52.5 mol% of Fe<SB>2</SB>O<SB>3</SB>, 16.0 mol%-21.0 mol% of ZnO and the other component is MnO. The material contains as sub-components 200 ppm-1,400 ppm of CaCO<SB>3</SB>, 200 ppm-2,000 ppm of V<SB>2</SB>O<SB>5</SB>, 150 ppm or less (including zero) of SiO<SB>2</SB>, and 3,000 ppm or less (including zero) of Co<SB>3</SB>O<SB>4</SB>. <P>COPYRIGHT: (C)2005,JPO&NCIPI
申请公布号 JP2004319636(A) 申请公布日期 2004.11.11
申请号 JP20030109336 申请日期 2003.04.14
申请人 HITACHI METALS LTD 发明人 KIGUCHI KATSUYUKI;KOYUHARA TOKUKAZU
分类号 H01F1/34 主分类号 H01F1/34
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