Patent ID: 9030866
Filing Date: 2015-05-12
Classification: G11C,Y10S

Abstract:
1. A method for initializing perpendicular magnetization directions of magnetic layers in a set of MRAM elements with each element having at least one free layer and at least first and second fixed layers, the method comprising the steps of: applying a first externally generated magnetic field to the set of MRAM elements, the first externally generated magnetic field having a first field direction and having a first field magnitude sufficient to switch magnetization directions of the fixed layers of each element into a first perpendicular magnetization direction; and applying a second externally generated magnetic field to the set of MRAM elements, the second externally generated magnetic field having a second field direction opposite to the first magnetic field and having a second field magnitude sufficient to switch the magnetization direction of the first fixed layer into a second perpendicular magnetization direction while leaving the second fixed layer in the first perpendicular magnetization direction.