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Magnetic device to reduce reversal current in current-driven magnetic reversal and magnetic memory using same
Magnetic device to reduce reversal current in current-driven magnetic reversal and magnetic memory using same
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机译:减少电流驱动的磁性反转中的反向电流的磁性装置以及使用该磁性装置的磁性存储器
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摘要
A magnetic device includes a first ferromagnetic layer in which magnetic layers and one or more nonmagnetic layers are alternately stacked, a second ferromagnetic layer having magnetization substantially fixed to a second direction, a third ferromagnetic layer provided between the first and second ferromagnetic layers and having a variable direction of magnetization, and a couple of electrodes configured to provide write current between the first and second ferromagnetic layers so that the direction of magnetization of the third ferromagnetic layer is determined depending on a direction of the current. At least one layer of the magnetic layers has magnetization substantially fixed to a first direction. Two or more layers of the magnetic layers are ferromagnetically coupled via the nonmagnetic layers. The ferromagnetic coupling has a strength such that a parallel magnetic alignment of the magnetic layers is maintained when the write current is passed.
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