发明名称 MAGNETIC POWDER AND MAGNETIC RECORDING MEDIUM
摘要 PROBLEM TO BE SOLVED: To realize recording of density which is higher than conventional cases, enhancing magnetic power in dispersion properties to improve a magnetic layer in surface smoothness. SOLUTION: A magnetic recording medium 1 is equipped with a magnetic layer 3, formed by the application of a magnetic paint containing magnetic powder, that contains Fe and a nonmagnetic support 2. The magnetic powder 2 contains 1.0 to 20 wt.% Al in a ratio of Al to Fe and one out of nonmagnetic metal elements, having trivalent ionization energy range of 30 to 45 eV in an amount of 1.0 to 40 wt.% for the ratio of the element Fe.
申请公布号 JP2002008910(A) 申请公布日期 2002.01.11
申请号 JP20000182275 申请日期 2000.06.16
申请人 SONY CORP 发明人 MEGURO MASASHI;WATANABE AKIKO
分类号 C22C33/02;G11B5/70;G11B5/706;H01F1/047 主分类号 C22C33/02
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