Title :
Spin-Torque Diode-Based Radio-Frequency Detector by Utilizing Tilted Fixed-Layer Magnetization and In-Plane Free-Layer Magnetization
Author :
Zeng, T. ; Zhou, Y. ; Lin, K.W. ; Lai, P.T. ; Pong, P.W.T.
Author_Institution :
Dept. of Electr. & Electron. Eng., Univ. of Hong Kong, Hong Kong, China
Abstract :
We report a novel spin-torque diode (STD) radio-frequency detector by utilizing tilted fixed-layer magnetization and in-plane free-layer magnetization. Through macrospin modeling and numerical simulation, we study both the direct current (dc) dependence and the perpendicular external field dependence of the output voltage of the detector. We systematically investigate both the fixed-layer magnetization tilt angle dependence and the dc dependence of the resonance detection regime of the detector. It is found that an ultrawide resonance detection regime 6.5 GHz can be achieved, which is 1200% higher than the traditional STD magnetic tunnel junction detector with in-plane fixed-layer magnetization.
Keywords :
angular measurement; diodes; electric current measurement; magnetic field measurement; magnetic sensors; magnetisation; numerical analysis; voltage measurement; wireless sensor networks; STD magnetic tunnel junction detector; frequency 6.5 GHz; in-plane free-layer magnetization; in-plane tilted fixed-layer magnetization; macrospin modeling; numerical simulation; radiofrequency detector; spin-torque diode; tilt angle dependence; ultrawide resonance detection; Detectors; Junctions; Magnetic tunneling; Magnetization; Radio frequency; Semiconductor diodes; Torque; Resonance detection regime; resonance detection regime; spin-torque diode; spin-torque diode (STD); tilted fixed-layer magnetization;
Journal_Title :
Magnetics, IEEE Transactions on
DOI :
10.1109/TMAG.2015.2438018
