Patent ID: 6909130
Filing Date: 2005-06-21
Classification: B82Y,G11C,H01L

Abstract:
1. A magnetic random access memory device comprising: a magnetoresistive element which stores data in accordance with a size of a resistance value between first and second magnetic layers which varies in accordance with magnetization arrangement states of the first and second magnetic layers, a non-magnetic layer being sandwiched between the first and second magnetic layers; a write wiring which is arranged in the vicinity of the first magnetic layer, generates an induced magnetic flux when a write current is caused to flow therethrough, and writes data in the magnetoresistive element by changing a magnetization direction in the first magnetic layer when the induced magnetic flux is applied to the magnetoresistive element; and a third magnetic layer which is provided so as to cover at least a peripheral surface including a first part of the write wiring opposed to the first magnetic layer of peripheral surfaces of the write wiring, wherein the first magnetic layer has a crystal magnetic anisotropy exceeding 10 a sum of a magnetic volume of a second part of the third magnetic layer opposed to the first part of the write wiring and that of the first magnetic layer is smaller than a magnetic volume of the third magnetic layer at parts other than the second part.