| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide a spin injection type magnetic memory that improves heat stability and reduces a write current. <P>SOLUTION: The storage element having magnetization perpendicular to a film surface comprises a storage layer 17 with a magnetization direction varying corresponding to information, a magnetization fixed layer 15 having magnetization perpendicular to the film face, which serves as reference of information stored in the storage layer 17 and an insulation layer 16 of a nonmagnetic material provided between the storage layer 17 and the magnetization fixed layer 15. Information is recorded by a magnetization direction of the storage layer 17 varied by injection of an electron spin polarized in a lamination direction. Here, a magnitude of an effective anti-magnetic field applied to the storage layer 17 is adjusted to be smaller than a magnitude of saturation magnetization of the storage layer 17. Each of the storage layer 17 and the magnetization fixed layer 15 has a film thickness so as to make interface magnetic anisotropy energy larger than diamagnetic field energy. <P>COPYRIGHT: (C)2012,JPO&INPIT |
