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MAGNETIC CORE AND COIL DESIGN FOR DOUBLE PERPENDICULAR MAGNETIC RECORDING (PMR) WRITERS
MAGNETIC CORE AND COIL DESIGN FOR DOUBLE PERPENDICULAR MAGNETIC RECORDING (PMR) WRITERS
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机译:双垂直磁记录(PMR)作家的磁芯和线圈设计
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摘要
A dual perpendicular magnetic recording writer is disclosed wherein the better of two writers on a slider is determined by performance testing, and is then integrated into a head gimbal assembly. Main pole layers in the two writers are separated by a cross-track width10 microns to minimize read-write offset. Each of the driving coil (DC) and bucking coil (BC) have two outer portions forming a U shape with a front side, and each have a center portion connected to the front side proximate to an air bearing surface and a backend contacting an interconnect. A write current passes from a BC outer portion below the main pole in the selected writer through the BC center portion to the interconnect, and then through the DC center portion to a DC outer portion above the main pole in the selected writer. Area density capability mean and sigma are improved.
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