METHOD AND SYSTEM FOR PROVIDING A MAGNETIC TUNNELING JUNCTION USING THERMALLY ASSISTED SWITCHING

摘要

The present invention relates to magnetic junction. The magnetic junction includes a pinned layer, a nonmagnetic spacer layer and a free layer. The magnetic junction also includes an additional nonmagnetic spacer layer and an additional pinned layer opposite the nonmagnetic spacer layer and the pinned layer. The nonmagnetic spacer layer is located between the pinned layer and the free layer. The free layer is configured to be switchable using a write current passing through the magnetic junction. The free layer is also configured to be thermally stable in the dormant state and to have reduced thermal stability due to heat generation from the write current through the magnetic junction. In some embodiments, the free layer comprises a ferry that increases in saturation magnetization with increasing temperature between at least one pinned layer (s) sandwiched by ferromagnetic layers, two sets of sandwiched ferromagnetic layers and ferromagnetic layers having different Curie temperatures Contains magnetic material.