Patent ID: 6885051
Filing Date: 2005-04-26
Classification: B82Y,H01L

Abstract:
1. A magnetic random access memory structure comprising: a plurality of longitudinally extending conductive bit lines formed over an insulating layer of a semiconductor substrate, said plurality of bit lines being spaced apart from each other by a distance of less than about 0.1 μm; respective first magnetic layers over said conductive bit lines; a plurality of spaced apart second magnetic layers formed over said plurality of first magnetic layers, wherein each of said first and second magnetic layers independently includes a magnetic material selected from the group consisting of tantalum, nickel-iron, tungsten-nitrogen, nickel, cobalt-nickel-iron, iron, and manganese-iron; and a barrier layer formed between said bit lines and said insulating layer, said barrier layer having a thickness of about 50 Angstroms to about 100 Angstroms.