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    • 10. 发明授权
    • 자기헤드
    • KR100356403B1
    • 2003-03-17
    • KR1019980028084
    • 1998-07-13
    • 가부시끼가이샤 히다치 세이사꾸쇼
    • 시게마츠사토시이마가와다카오니시오카고이치가미오히로시우사미가츠히사
    • G11B5/127
    • B82Y25/00B82Y10/00G11B5/012G11B5/3903G11B2005/3996Y10S428/90Y10T428/1121Y10T428/115Y10T428/1193
    • Magnetoresistive and spin valve heads have a layered structure. Common to each of the layered structures of these heads is the combination of a soft-magnetic layer of essentially NiFe near a spacer layer of essentially Ta, which is used for insuring (111) crystal orientation of the NiFe layer. An isolate layer is interposed between the spacer layer and the soft-magnetic layer to prevent a diffusion boundary from being created at the interface of these layers which tends to degrade the soft-magnetic property of the NiFe layer, especially when the thickness of the soft-magnetic layer is 10 and nm or less. The isolate layer is one of a composition in which the principal component is a magnetic element that is not solid soluble with Ta, a composition in which the principal component is a non-magnetic element that is not solid soluble with Ni and Fe, a composition in which the principal component is at least one of the elements of Co, Fe, Ti, V, Zr, Nb, Mo, Hf, W, Tc, Ru, Rh, Pd, Ag, Re, Os, Ir, Pt and Au; or a composition in which the principal component is of Co(100-x)Fe(x), where 20>/=X>O. The isolate layer has a structure that is amorphous, an fcc structure.
    • 磁阻和自旋阀头具有分层结构。 这些头的每个分层结构的共同之处是基本上Ta的间隔层附近的基本上NiFe的软磁层的组合,其用于确保NiFe层的(111)晶体取向。 在隔离层和软磁层之间插入隔离层以防止在这些层的界面处产生扩散边界,这趋向于降低NiFe层的软磁特性,特别是当软磁层的厚度 - 磁层的厚度为10nm或更小。 隔离层是主成分为不与Ta固溶的磁性元素的组合物,主成分为不与Ni和Fe固溶的非磁性元素的组合物,组合物 其中主成分是Co,Fe,Ti,V,Zr,Nb,Mo,Hf,W,Tc,Ru,Rh,Pd,Ag,Re,Os,Ir,Pt和Au中的至少一种元素 ; 或其中主要组分为Co(100-x)Fe(x),其中20> = X> 0的组合物。 隔离层具有无定形结构,即fcc结构。