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

fYear

2015

fDate

11-15 May 2015

Firstpage

1

Lastpage

1

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;

fLanguage

English

Publisher

ieee

Conference_Titel

Magnetics Conference (INTERMAG), 2015 IEEE

Conference_Location

Beijing

Print_ISBN

978-1-4799-7321-7

Type

conf

DOI

10.1109/INTMAG.2015.7157686

Filename

7157686