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US08351165B2 Current-perpendicular-to-the-plane (CPP) magnetoresistive sensor with CoFeGe ferromagnetic layers and Ag or AgCu spacer layer 有权
具有CoFeGe铁磁层和Ag或AgCu间隔层的电流垂直平面（CPP）磁阻传感器

Current-perpendicular-to-the-plane (CPP) magnetoresistive sensor with CoFeGe ferromagnetic layers and Ag or AgCu spacer layer
Abstract:
A current-perpendicular-to-the-plane spin-valve (CPP-SV) magnetoresistive sensor has a ferromagnetic alloy comprising Co, Fe and Ge in the sensor's free layer and/or pinned layer and a spacer layer of Ag, Cu or a AgCu alloy between the free and pinned layers. The sensor may be a simple pinned structure, in which case the pinned layer may be formed of the CoFeGe ferromagnetic alloy. Alternatively, the sensor may have an AP-pinned layer structure, in which case the AP2layer may be formed of the CoFeGe ferromagnetic alloy. The Ge-containing alloy comprises Co, Fe and Ge, wherein Ge is present in the alloy in an amount between about 20 and 40 atomic percent, and wherein the ratio of Co to Fe in the alloy is between about 0.8 and 1.2.
Abstract(Chinese):

电流垂直于平面的自旋阀（CPP-SV）磁阻传感器在传感器的自由层和/或被钉扎层中具有包含Co，Fe和Ge的铁磁合金和Ag，Cu或 AgCu合金在自由和固定层之间。 传感器可以是简单的钉扎结构，在这种情况下，被钉扎层可以由CoFeGe铁磁合金形成。 或者，传感器可以具有AP钉扎层结构，在这种情况下，AP2层可以由CoFeGe铁磁性合金形成。 含Ge合金包括Co，Fe和Ge，其中Ge在合金中以约20至40原子％的量存在，并且其中合金中Co与Fe的比率在约0.8和1.2之间。

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