MAGNETIC HEAD AND MAGNETIC RECORD PLAYBACK APPARATUS

To provide a magnetic head and a magnetic record playback apparatus that can improve recording density.SOLUTION: According to an embodiment, a magnetic head comprises: a magnetic pole that has a first surface; a first shield that is separated from the magnetic pole along a first direction along the first surface; and a laminate that is provided between the magnetic pole and the first shield. The laminate includes: a magnetic layer that contains at least one selected from the group consisting of Fe, Co, and Ni; a non-magnetic first conductive layer that is provided between the magnetic pole and the magnetic layer and in contact with the magnetic pole and the magnetic layer; and a non-magnetic second conductive layer that is provided between the magnetic layer and the first shield and in contact with the magnetic layer and the first shield. The first shield has a first shield surface that is in contact with the second conductive layer. A first ratio of the length of the magnetic layer along a second direction perpendicular to the first surface to the length of the first shield surface along the second direction is 0.1 or more.SELECTED DRAWING: Figure 1 【課題】記録密度の向上が可能な磁気ヘッド及び磁気記録再生装置を提供する。【解決手段】実施形態によれば、磁気ヘッドは、第１面を有する磁極と、第１面に沿う第１方向に沿って前記磁極から離れた第１シールドと、前記磁極と前記第１シールドとの間に設けられた積層体と、を含む。前記積層体は、Ｆｅ、Ｃｏ及びＮｉからなる群から選択された少なくとも１つを含む磁性層と、前記磁極と前記磁性層との間に設けられ前記磁極及び前記磁性層と接した非磁性の第１導電層と、前記磁性層と前記第１シールドとの間に設けられ前記磁性層及び前記第１シールドと接した非磁性の第２導電層と、を含む。前記第１シールドは、前記第２導電層と接触する第１シールド面を有する。前記第１面に対して垂直な第２方向に沿う前記磁性層の長さの、前記第２方向に沿う前記第１シールド面の長さに対する第１比は、０．１以上である。【選択図】図１