公开(公告)号：US20140133052A1

公开(公告)日：2014-05-15

申请号：US13677196

申请日：2012-11-14

Applicant: HGST NETHERLANDS B.V.

Inventor： Kenichi Meguro ,  Keizo Kato ,  Susumu Okamura ,  Nobuo Yoshida

IPC: G11B5/127 ,  G11B5/39

CPC classification number: G11B5/398 ,  G11B5/3906 ,  G11B5/3909 ,  G11B5/3929 ,  Y10T428/1121

Abstract: A magnetic read head having a reduced read gap and a stable magnetic pinned layer structure. The sensor includes a seed layer that has a surface formed with an anisotropic texture. A magnetic pinned layer formed over the seed layer has a body centered cubic structure which causes the pinned layer structure to have a magnetic anisotropy with an easy axis oriented perpendicular to the air bearing surface when deposited over the textured seed layer. A magnetic free layer structure formed over the pinned layer structure and over a non-magnetic barrier layer has a face centered cubic structure which causes the magnetic free layer to have a magnetic anisotropy with an easy axis oriented parallel with the air bearing surface.

Abstract translation: 具有减小的读取间隙和稳定的磁性固定层结构的磁读头。 传感器包括具有形成有各向异性纹理的表面的种子层。 形成在种子层上方的磁性钉扎层具有体心立方结构，这使得被钉扎层结构具有磁性各向异性，当沉积在纹理种子层上时，易于轴定向成垂直于空气轴承表面。 形成在被钉扎层结构之上并且在非磁性阻挡层之上的无磁性层结构具有面心立方结构，其使得磁性自由层具有与空气轴承表面平行定向的容易轴的磁各向异性。