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Magnetic recording medium having a magnetic layer containing hexagonal ferrite magnetic particles and specified Hc, Hk and Hc/Hk
Magnetic recording medium having a magnetic layer containing hexagonal ferrite magnetic particles and specified Hc, Hk and Hc/Hk
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机译:具有磁性层的磁记录介质,该磁性层包含六方铁氧体磁性颗粒并具有指定的Hc,Hk和Hc / Hk
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摘要
A disk-form magnetic recording medium is described, comprising a nonmagnetic support having provided thereon at least one magnetic layer comprising a binder and hexagonal ferrite magnetic particles dispersed therein, wherein the magnetic layer has an in-plane coercive force Hc of 1,200 to 3,000 Oe, an anisotropy field H.sub.k of more than 3000 Oe, an Hc/Hk ratio of 0.25 or higher, an in-plane orientation ratio of 0.8 or higher, and a vertical-direction squareness ratio calculated through diamagnetic correction of lower than 0.6.
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