Patent ID: 8294227
Filing Date: 2012-10-23
Classification: B82Y,G11C,H01F,H01L

Abstract:
1. A magnetic cell comprising: a ferromagnetic free layer having a free magnetization orientation direction; a first synthetic anti-ferromagnetic pinned reference layer having a first reference magnetization orientation direction that is parallel or anti-parallel to the free magnetization orientation direction; a first oxide barrier layer between the ferromagnetic free layer and the first synthetic anti-ferromagnetic pinned reference layer; and a second synthetic anti-ferromagnetic pinned reference layer having a second reference magnetization orientation direction that is orthogonal to the first reference magnetization orientation direction, the ferromagnetic free layer between the first synthetic anti-ferromagnetic pinned reference layer and the second synthetic anti-ferromagnetic pinned reference layer wherein the first synthetic anti-ferromagnetic pinned reference layer has a first blocking temperature and the second synthetic anti-ferromagnetic pinned reference layer has a second blocking temperature that is less than the first blocking temperature.