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    • 4. 发明申请
    • Method for fabricating a side shield for a flux guide layer for perpendicular magnetic recording
    • 用于制造用于垂直磁记录的磁通引​​导层的侧屏蔽的方法
    • US20070146931A1
    • 2007-06-28
    • US11317917
    • 2005-12-22
    • Amanda BaerDaniel BedellQuang LeAron Pentek
    • Amanda BaerDaniel BedellQuang LeAron Pentek
    • G11B5/147
    • G11B5/3116G11B5/112G11B5/1278G11B5/3146G11B5/3163
    • A magnetic head for use in a perpendicular recording system having a novel shield structure that provides exceptional magnetic shielding from extraneous magnetic fields such as from a write coil, shaping layer or return pole of the write head. The shield structure is constructed to have a bottom or leading surface that is generally coplanar with the bottom or leading surface of the shaping layer, but all or a portion of the shield structure is not as thick as the shaping layer so as to have a top surface that does not extend to the same elevation (in a trailing direction) as that of the shaping layer. Making the shields extend to a lower level than the shaping layer improves magnetic performance by reducing flux leakage from the write pole, and also provides manufacturing advantages, such as during the manufacturing of the write pole. These manufacturing advantages include the advantage of having the shields covered with a protective layer of, for example, alumina during the ion milling of the write pole.
    • 一种用于垂直记录系统的磁头,其具有新的屏蔽结构,其提供例如来自写入磁头的写入线圈,成形层或返回磁极的外部磁场的卓越的磁屏蔽。 屏蔽结构被构造成具有与成形层的底部或前表面大致共面的底部或前表面,但是屏蔽结构的全部或一部分不像成形层那样厚,以便具有顶部 表面不延伸到与成形层相同的高度(在拖尾方向上)。 使屏蔽层延伸到比成形层更低的水平,通过减小来自写入极的磁通泄漏来提高磁性能,并且还提供制造优点,例如在写入磁极的制造期间。 这些制造优点包括在写入极的离子铣削期间使屏蔽覆盖有例如氧化铝的保护层的优点。