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    • 6. 发明授权
    • Magnetic oscillation element
    • 磁振元件
    • US08207806B2
    • 2012-06-26
    • US13216968
    • 2011-08-24
    • Kiwamu KudoKoichi MizushimaTazumi NagasawaRie Sato
    • Kiwamu KudoKoichi MizushimaTazumi NagasawaRie Sato
    • H01F1/00H01F3/00H01F7/00
    • H03B15/006H01L43/08
    • According to one embodiment, magnetization directions of a magnetic free layer and a magnetic pinned layer are parallel to junction planes between the magnetic free layer and a spacer layer and between the magnetic pinned layer and the spacer layer. The magnetic free layer has a uniaxial magnetic anisotropy, and generates a magnetization oscillation when a current larger than an oscillation threshold current flows through the magnetic free layer. A magnetic field generator controls a magnitude and a direction of an external magnetic field to cancel a shift amount of an oscillation frequency caused by a diamagnetic field due to the magnetization oscillation and a shift amount of the oscillation frequency caused by a magnetic field due to the uniaxial magnetic anisotropy.
    • 根据一个实施例,磁性自由层和磁性被钉扎层的磁化方向平行于磁性自由层和间隔层之间以及磁性被钉扎层和间隔层之间的结面。 磁性自由层具有单轴磁各向异性,并且当大于振荡阈值电流的电流流过无磁层时,产生磁化振动。 磁场发生器控制外部磁场的大小和方向,以抵消由于磁化振动引起的由抗磁场引起的振荡频率的偏移量和由于磁场引起的磁场引起的振荡频率的偏移量 单轴磁各向异性。