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    • 6. 发明公开
    • 자기 기록용 방추형 자성 합금 입자 및 자기 기록 매체
    • 用于磁记录和磁记录介质的主轴磁性合金颗粒
    • KR1020020053734A
    • 2002-07-05
    • KR1020010084784
    • 2001-12-26
    • 도다 고교 가부시끼가이샤
    • 마에까와,마사아끼구로까와,하루끼오끼나까,겐지야마모또,아끼노리오따,야스따까
    • G11B5/62
    • G11B5/70621Y10S428/90
    • PURPOSE: Spindle-shaped magnetic alloy particles for magnetic recording, and a magnetic recording medium are provided to improve output at the short wave length, to store stably, and to reduce noise by manufacturing high density magnetic recording media of spindle-shaped magnetic alloy particles. CONSTITUTION: Spindle-shaped magnetic alloy particles contain iron and cobalt as main components. The spindle-shaped magnetic alloy particles include 20 to 50 atm% of cobalt, calculated as cobalt based on the total amount of iron, and have the average major axis diameter(L) of 0.03 to 0.10 micrometer, the coercive force value of 159.2 to 238.7 kA/m (2,000 to 3,000 Oe), the crystallite size of 100 to 160 angstrom, and the activation volume(Vact) of 0.01 to 0.07E-4 micrometer 3. Noise is reduced, and recording is stabilized with manufacturing the magnetic recording medium of spindle-shaped magnetic alloy particles.
    • 目的:提供用于磁记录的主轴形磁性合金颗粒和磁记录介质,以改善短波长输出,稳定存储,并通过制造心轴形磁性合金颗粒的高密度磁记录介质来降低噪声 。 构成:主轴形磁性合金颗粒含铁和钴为主要成分。 纺锤形磁性合金颗粒包含20至50atm%的钴,以钴计,以总铁计算,其平均长轴直径(L)为0.03至0.10微米,矫顽力值为159.2至 238.7kA / m(2,000至3,000Oe),微晶尺寸为100至160埃,活化体积(Vact)为0.01至0.07E-4微米3.噪声降低,并通过制造磁记录来稳定记录 纺锤形磁性合金颗粒介质。