Patent ID: 6992342

Claim:
A magnetic memory device having a non-volatile magnetic section comprising: a first interconnection; a second interconnection crossing said first interconnection in a grade-separated manner; an interconnection layer separate from said first and second interconnections; a tunnel magneto resistance element electrically insulated from said first interconnection and electrically connected to said second interconnection, the tunnel magneto resistance element including a tunnel barrier layer interposed between ferromagnetic materials within a region in which said first and said second interconnections cross; a through hole through which said tunnel magneto resistance element is electrically connected with a connection in said interconnection layer, said through hole extending through said first interconnection and having an interior insulated from said first interconnection; and an electrically conductive contact in said through hole interconnecting said interconnection layer and a side of said tunnel magneto resistance element which is opposite to a side to which said second interconnection is connected, wherein, said non-volatile magnetic section stores information by utilizing a change in resistance depending on whether spin directions of said ferromagnetic materials are parallel or antiparallel; and interconnections are electrically conductive members.