Patent ID: 7345367

Claim:
A nonvolatile magnetic memory device of the type having: a first wiring; a second wiring intersecting three-dimensionally with said first wiring; and a tunnel magnetoresistance element which is electrically insulated from said first wiring and electrically connected to said second wiring and which is formed in the region of intersection of said first wiring and said second wiring such that a tunnel insulating layer is sandwiched between ferromagnetic materials which change in resistance depending on whether the spin direction is parallel or antiparallel, thereby recording information; wherein said magnetic memory device comprises a first portion of a magnetic flux concentrator of high-permeability layer formed between said first wiring and said tunnel magnetoresistance element and a second portion of said magnetic flux concentrator of high permeability layer adjacent the lateral sides of said tunnel magnetoresistance element, with an insulating film interposed therebetween.