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    • 94. 发明授权
    • Composite writer shield for improving writer performance
    • 复合作家盾,提高作家的表现
    • US08274758B2
    • 2012-09-25
    • US12157683
    • 2008-06-12
    • Yan WuKowang Liu
    • Yan WuKowang Liu
    • G11B5/147
    • G11B5/3146G11B5/11G11B5/1278G11B5/3136
    • A PMR writer in a read/write head is disclosed wherein an upper shield covering the coil layer is comprised of a magnetic layer optimized for magnetic performance and a second layer used for tuning mechanical protrusion. The composite layer simultaneously provides high saturation magnetization and high permeability from the magnetic layer and low CTE from the second layer which tunes the relative spacing between the writer, reader, and the rest of the slider. In one embodiment, first and second write shields are formed on a write gap layer and have front portions at the ABS and back portions in a back gap region. The upper write shield connects on one side with the second write shield at the ABS and on a second side with the back gap region. This design can yield better reader and writer spacing for the same physical clearance which enables products with higher recording density.
    • 公开了一种读/写头中的PMR写入器,其中覆盖线圈层的上屏蔽包括针对磁性能优化的磁性层和用于调谐机械突起的第二层。 复合层同时提供来自磁性层的高饱和磁化强度和高磁导率和来自第二层的低CTE,其调节写入器,读取器和滑块的其余部分之间的相对间隔。 在一个实施例中,第一和第二写屏蔽形成在写间隙层上并且在ABS的前部和后间隙区中的后部形成。 上写入屏蔽在一侧与ABS的第二写屏蔽连接,并且在第二侧与后间隙区域相连。 该设计可以为相同的物理间隙产生更好的读取器和写入器间距,从而使具有更高记录密度的产品。