Title :
Realization of ultra-wide resonance detection regime of spin-torque diode radio-frequency detector by utilizing tilted fixed-layer magnetization
Author :
Zeng, T. ; Zhou, Y. ; Lin, K. ; Lai, P. ; Pong, P.
Author_Institution :
Electr. & Electron. Eng., Univ. of Hong Kong, Hong Kong, China
Abstract :
A novel spin-torque diode radio-frequency detector structure based on tilted fixed-layer magnetic tunnel junction (MTJ) is proposed in this study. The MTJ sandwich structure is composed of NiFe free layer, FePt fixed layer, and MgO interlayer. In order to sense RF signals of different frequencies, both the spin-transfer-torque effect and the alternating-voltage-controlled magnetic anisotropy effect are integrated into the simulation. Results demonstrate that tilting the fixed-layer magnetization can drastically increase the resonance detection regime.
Keywords :
iron alloys; magnesium compounds; magnetic anisotropy; magnetic multilayers; magnetic sensors; magnetic tunnelling; magnetoelectronics; nickel alloys; platinum alloys; radiofrequency measurement; sandwich structures; MTJ; NiFe-MgO-FePt; RF signal sensor; alternating-voltage-controlled magnetic anisotropy; magnetic tunnel junction; resonance detection; sandwich structure; spin-torque diode radiofrequency detector; spin-transfer-torque; tilted fixed-layer magnetization; Detectors; Electric potential; Magnetization; Nanoscale devices; Physics; Radio frequency; Sensitivity;
Conference_Titel :
Magnetics Conference (INTERMAG), 2015 IEEE
Conference_Location :
Beijing
Print_ISBN :
978-1-4799-7321-7
DOI :
10.1109/INTMAG.2015.7157686
