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Fabrication of a coercivity hard bias using FePt containing film
Fabrication of a coercivity hard bias using FePt containing film
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机译:使用含FePt的薄膜制造矫顽力硬偏置
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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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