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Magnetic sensing element including free magnetic layer or pinned magnetic layer having two sublayers that are composed of different CoMn-based heusler alloys
Magnetic sensing element including free magnetic layer or pinned magnetic layer having two sublayers that are composed of different CoMn-based heusler alloys
A magnetic sensing element is provided. A free magnetic layer has a three-layer structure including CoMnα sublayers each composed of a metal compound represented by the formula: Co2xMnxαy. The α contains an element β and Sb, the element β being at least one element selected from Ge, Ga, In, Si, Pb, Zn, Sn, and Al. The concentration x and the concentration y are each represented in terms of atomic percent and satisfy the equation: 3x+y=100 atomic percent. One of the CoMnα sublayers is in contact with a lower nonmagnetic material layer. The other CoMnα sublayer is in contact with upper nonmagnetic material layer. As a result, it is possible to achieve a high ΔRA and a lower interlayer coupling magnetic field Hin compared with the known art.
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机译：提供了一种磁感测元件。自由磁性层具有三层结构，该三层结构包括CoMnα子层，每个子层均由下式表示的金属化合物组成：Co 2x Mn x α y 。 α包含元素β和Sb，元素β是选自Ge，Ga，In，Si，Pb，Zn，Sn和Al中的至少一种元素。浓度x和浓度y分别以原子百分数表示，并满足等式：3 I x +1 + y ＝ 100原子百分数。 CoMnα子层之一与下部非磁性材料层接触。另一个CoMnα子层与上层非磁性材料层接触。结果，与已知技术相比，可以实现较高的ΔRA和较低的层间耦合磁场Hin。
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