Patent ID: 9165626
Filing Date: 2015-10-20
Classification: G11C

Abstract:
1. A magnetic random access memory (MRAM) cell comprising a magnetic tunnel junction comprising a storage layer having a net storage magnetization that is adjustable from a first direction to a second direction when the magnetic tunnel junction is at a high temperature threshold and that is pinned at a low temperature threshold; a sense layer having a net sense magnetization that is reversible; and a tunnel barrier layer separating the sense layer from the storage layer; at least one of the storage layer and the sense layer comprising a ferrimagnetic 3d-4f amorphous alloy material comprising a sub-lattice of 3d transition metals atoms providing a first magnetization, and a sub-lattice of 4f rare-earth atoms providing a second magnetization, such that at a compensation temperature of said at least one of the storage layer and sense layer, the first magnetization and the second magnetization are substantially equal.