Patent ID: 7247506

Claim:
A method for producing a magnetic memory device, the method comprising: forming a magnetoresistive effect element; forming a first layer of insulating material so as to cover the magnetoresistive effect element; forming a second layer so as to cover the first layer; flattening a stacked film formed of the second layer and the first layer to expose a top face of the magnetoresistive effect element; forming an upper writing line overlying the magnetoresistive effect element; etching the second layer to expose the first layer on a side portion of the magnetoresistive effect element; and forming a yoke structural member, after forming the upper writing line and after exposing the first layer, so as to cover at least a side portion of the upper writing line and the side portion of the magnetoresistive effect element to sandwich the exposed first layer between the yoke structural member and the side portion of the magnetoresistive effect element.