MAGNETORESISTIVE EFFECT ELEMENT, MAGNETIC STORAGE, PORTABLE TERMINAL APPARATUS, MAGNETORESISTIVE EFFECT HEAD, AND MAGNETIC REPRODUCTION APPARATUS

摘要

PROBLEM TO BE SOLVED: To provide a magnetoresistive effect element having a small coercive force and a small switching magnetic field. SOLUTION: There are a first ferromagnetic layer 3 where a magnetization direction is changed by an external magnetic field, non-magnetic connection layer 5 that is laminated to the first ferromagnetic layer 3, a second ferromagnetic layer 7 that is laminated to the first ferromagnetic layer 3 via the non- magnetic connection layer 5 and whose magnetization direction is changed by the external magnetic field, a first non-magnetic spacer layer 11 that is laminated to the second ferromagnetic layer 7, and a third ferromagnetic layer 13 that is laminated to the second ferromagnetic layer 7 via the first non- magnetic spacer layer 11 and substantially maintains the magnetization in a specific direction under the external magnetic field. In this case, the first and second ferromagnetic layers 3 and 5 are magnetically coupled by size J, and the size J meets -3000 [Oe]<=J<0 [Oe]