发明授权
- 专利标题： Fabrication of a coercivity hard bias using FePt containing film
- 专利标题（中）： 使用含FePt膜制备高矫顽力硬偏压
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申请号： US12927697申请日： 2010-11-22
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公开(公告)号： US08493694B2公开(公告)日： 2013-07-23
- 发明人: Min Zheng , Kunliang Zhang , Min Li
- 申请人： Min Zheng , Kunliang Zhang , Min Li
- 申请人地址： US CA Milpitas
- 专利权人： Headway Technologies, Inc.
- 当前专利权人： Headway Technologies, Inc.
- 当前专利权人地址： US CA Milpitas
- 代理机构： Saile Ackerman LLC
- 代理商 Stephen B. Ackerman
- 主分类号： G11B5/39
- IPC分类号： G11B5/39
摘要：
The free layer of a CPP-TMR sensor is biased by laterally disposed hard bias (HB) layers that include a seedlayer structure, a magnetic layer structure of high coercivity material and a capping layer structure. The magnetic layer structure is a layer of FePt-containing material, such as FePtCu, while the seedlayers and capping layers include layers of Cr, CrTi, Fe, FeCo or FeCoMo. These combinations enable the promotion of the L10 phase of the FePt-containing material which provides a high coercivity magnetic layer structure at much lower annealing temperatures than in the prior art.
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