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Method of manufacturing a perpendicular magnetic recording head laminated with AFM-FM phase change material
Method of manufacturing a perpendicular magnetic recording head laminated with AFM-FM phase change material
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机译:层叠有aFM-fm相变材料的垂直磁记录头的制造方法
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摘要
A method of manufacturing a PMR writer is disclosed that minimizes pole erasure during non-writing and maximize write field during writing by including an AFM-FM phase change material spacer that is in an AFM state during non-writing and switches to a FM state by heating during writing. The main pole layer including the write pole may be formed as a laminated structure by a sputter deposition process wherein a plurality of “n” ferromagnetic layers and “n−1” AFM-FM phase change material layers are laid down in an alternating manner. The AFM-FM phase change material is preferably a FeRh or FeRhX alloy (X=Pt, Pd, or Ir) having a Rh content 35 atomic %, and may also be used as a flux gate to prevent yoke flux from leaking into the write pole tip.
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