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  • Title: Microwave magnetic field modulation of spin torque oscillator based on perpendicular magnetic tunnel junctions.
    Author: Skowroński W, Chęciński J, Ziętek S, Yakushiji K, Yuasa S.
    Journal: Sci Rep; 2019 Dec 13; 9(1):19091. PubMed ID: 31836753.
    Abstract:
    Modulation of a microwave signal generated by the spin-torque oscillator (STO) based on a magnetic tunnel junction (MTJ) with perpendicularly magnetized free layer is investigated. Magnetic field inductive loop was created during MTJ fabrication process, which enables microwave field application during STO operation. The frequency modulation by the microwave magnetic field of up to 3 GHz is explored, showing a potential for application in high-data-rate communication technologies. Moreover, an inductive loop is used for self-synchronization of the STO signal, which after field-locking, exhibits significant improvement of the linewidth and oscillation power.
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