Patent ID: 6249407
Filing Date: 2001-06-19
Classification: B82Y,G11B,H01L

Abstract:
A current perpendicular type magnetoresistive device having a magnetoresistive element in which a current flows through the magnetoresistive element in a direction perpendicular to a plane of the magnetoresistive element, said magnetoresistive device comprising:upper and lower shielding layers forming a gap therebetween so that said magnetoresistive element is situated within said gap;upper and lower gap layers provided within said gap so that said magnetoresistive element is interposed between said upper and lower gap layers, said upper gap layer being provided between said upper shielding layer and said magnetoresistive element, said lower gap layer being provided between said lower shielding layer and said magnetoresistive element, said lower gap layer being formed from tantalum; andan under layer interposed between said lower shielding layer and said lower gap layer, said under layer being formed from a material having a body-centered cubic structure.