| 摘要 |
A magnetic memory 10 includes a memory layer 21 for holding information by a magnetization state of a magnetic material, wherein the memory layer 21 is composed of at least magnetic layers 16, 18 of two layers and a nonmagnetic layer 17 interposed between the magnetic layers 16, 18 of two layers, one magnetic layer 18 of the magnetic layers 16, 18 of two layers has a large product of a magnetization damping constant, a magnetization amount and magnetic anisotropy and a small product of the magnetization amount and the magnetic anisotropy as compared with those of the other magnetic layer. Also, information is recorded on the magnetic memory device 10 with application of an electric current flowing in the memory layer 21 . Further, a magnetic memory includes the magnetic memory device 10 to record information with application of an electric current flowing in the recording layer 21 . There are provided a magnetic memory device capable of recording information with application of a low electric current and a magnetic memory device driving method for recording and reading information on and from the magnetic memory device and a magnetic memory including the magnetic memory device.
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