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Spin-valve and use of a plurality of spin-valves 发明授权

2023-06-03 1830 646K 0

专利信息

申请日期 2025-07-11 申请号 DE102012005134
公开(公告)号 DE102012005134B4 公开(公告)日 2015-10-08
公开国别 DE 申请人省市代码 全国
申请人 Helmholtz Zentrum Berlin für Materialien und Energie GmbH
简介 A spin valve includes two layers, a reference layer and a free layer, magnetised perpendicularly to a layer plane and an intermediate layer disposed between the magnetic layers. The reference layer predetermines a preferred orientation of a direction of the magnetisation, is formed from a ferrimagnetic material, and has a higher coercive field strength than the free layer. The free layer is formed from a ferromagnetic or ferrimagnetic material. The intermediate layer is electrically conductive or non-conductive. The reference layer and the free layer have a single-domain magnetisation. The reference layer is formed from an alloy comprising a rare earth element and a transition metal. The coercive field strength of the reference layer is set via its composition and is more than 0.8 kA/m. An anisotropy and layer thickness of the reference layer and a coupling constant define an exchange bias field between 0.8 and 80 kA/m.


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