Patent ID: 9082963
Filing Date: 2015-07-14
Classification: B82Y,H01F,H01L

Abstract:
1. A method for manufacturing spin transfer torque (STT) magnetic random access memory (MRAM) device comprising: forming at least one conductive via on at least one first electrode; depositing over the at least one conductive via a magnetic tunnel junction stack such that a free layer that is configured to have an adaptable magnetic moment for storage of data is disposed between the at least one conductive via and a tunnel barrier layer that is configured to enable electrons to tunnel between the free layer and a reference layer through the tunnel barrier layer; and depositing at least one second electrode over the magnetic tunnel junction stack to generate an MRAM device structure, wherein the at least one conductive via has a width that is narrower than a width of the free layer such that a width of at least one active STT area for the storage of data in the free layer is defined by the width of the at least one conductive via.