Magnetic recording medium and magnetic head assembly with a medium
magnetic coating having a high product of residual magnetization and
thickness
    1.
    发明授权
    Magnetic recording medium and magnetic head assembly with a medium magnetic coating having a high product of residual magnetization and thickness 失效
    具有中等磁性涂层的磁记录介质和磁头组件具有高的残余磁化强度和厚度积

    公开(公告)号:US6014292A

    公开(公告)日:2000-01-11

    申请号:US976661

    申请日:1997-11-24

    摘要: A magnetic recording medium and a thin film planar magnetic head form an assembly. The magnetic recording medium of the assembly includes a magnetic coating having a residual magnetization value (Mr) and a thickness value (t) which together form a high product value (Mr)(t) which is preferably greater than about 1.8 memu/cm.sup.2. This coating also has a high coercive field value of Hc which is preferably greater than about 2,200 Oe. The ratio formed by dividing the (Mr)(t)product value by this coercive field value Hc((Mr)(t)/Hc) is preferably approximately 0.7.times.10.sup.-3 memu/cm.sup.2 /Oe or 0.8.times.10.sup.-3 memu/cm.sup.2 /Oe. The product of the (mr)(t) product value and the coercive field value Hc ((Mr)(t)(Hc)) is preferably greater than approximately 4000 Oe.times.memu/cm.sup.2. The overall effect of the present invention is to provide the magnetic medium coating with an enlarged hysteresis loop as compared to that conventionally used with such assemblies so that there is a resulting increased amplitude reading signal with an improved signal to noise ratio.

    摘要翻译: 磁记录介质和薄膜平面磁头形成组件。 组件的磁记录介质包括具有剩余磁化值(Mr)和厚度值(t)的磁性涂层,它们一起形成高产品值(Mr)(t),其优选大于约1.8emu / cm 2。 该涂层还具有Hc的高矫顽磁场值,优选大于约2,200Oe。 将(Mr)(t)乘积值除以矫顽场值Hc((Mr)(t)/ Hc)所形成的比值优选为约0.7×10 -3 memu / cm 2 / Oe或0.8×10 -3 memu / cm 2 / Oe。 (mr)(t)乘积值和矫顽场值Hc((Mr)(t)(Hc))的乘积优选大于约4000Oexmemu / cm 2。 本发明的总体效果是提供磁性介质涂层与常规用于这种组件的磁滞回线相比较,使得产生具有改善的信噪比的增加的幅度读取信号。