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1. 发明授权

US5748414A Magnetoresistive element assembly with longitudinal bias 失效
标题翻译：具有纵向偏置的磁阻元件组件
公开(公告)号：US5748414A
公开(公告)日：1998-05-05
申请号：US685084
申请日：1996-07-23
申请人： In Eung Kim , A. M. Choukh
发明人： In Eung Kim , A. M. Choukh
IPC分类号： G11B5/00 , G11B5/39
CPC分类号： G11B5/3903 , G11B5/3987 , G11B2005/0016
摘要： A magnetoresistive (MR) element assembly with a longitudinal bias comprising a MR element, a bias coil, and spaced conductor leads is disclosed. The MR element is formed into an elongated ellipse-like shape with an elongated sense region and two end regions separated by a small nonmagnetic gap thereby reducing the longitudinal demagnetization field within the MR element. An easy axis of magnetization is formed by the MR element and oriented in a direction parallel to the main axis of the element. A bias coil is disposed about the MR element to produce a longitudinal bias field sufficient to maintain the elongated sense region in a single domain state. The elongated ellipse-like shaped MR element features a uniformly reduced demagnetization field for inhibiting the formation of a multi-domain state within the elongated sense region. The MR element assembly thus improves sensitivity of the MR head and suppresses Barkhausen noise in the output of the head.
摘要翻译：公开了具有包括MR元件，偏置线圈和间隔的导体引线的纵向偏置的磁阻（MR）元件组件。 MR元件形成为细长的椭圆形形状，其具有细长的感测区域和由小的非磁性间隙分开的两个端部区域，从而减小MR元件内的纵向退磁场。易磁化轴由MR元件形成，并且在平行于元件主轴的方向上取向。偏置线圈围绕MR元件设置以产生足以将细长的感测区域保持在单个域状态的纵向偏置场。细长的椭圆形MR元件具有均匀减小的去磁场，用于抑制在细长感测区域内形成多畴状态。因此，MR元件组件提高了MR头的灵敏度，并抑制了头部输出中的Barkhausen噪声。

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