Patent ID: 7291506
Filing Date: 2007-11-06
Classification: B82Y,C23F,H01F,H01L

Abstract:
1. A method of manufacturing a magnetic memory device, comprising: forming an insulation layer on a substrate; forming a lower electrode on the insulation layer; forming a magneto-resistive film on an upper surface of the lower electrode, the magneto-resistive film including an insulation barrier layer and a plurality of magnetic films stacked on both sides of the insulation barrier layer; stacking a mask layer on the magneto-resistive film; and performing ion etching on the magneto-resistive film, using the mask layer as a mask, thereby forming a magneto-resistive element, such that a center of distribution of sputter substance dispersed by an ion beam is located away from a side surface of the magneto-resistive element, wherein at the time of the ion etching, a taper is formed on the side surface of the magneto-resistive element such that an angle of the side surface of the magneto-resistive element to a bottom surface of the magneto-resistive element is about 60° or less.