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

Volume

51

Issue

11

fYear

2015

Firstpage

1

Lastpage

4

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;

fLanguage

English

Journal_Title

Magnetics, IEEE Transactions on

Publisher

ieee

ISSN

0018-9464

Type

jour

DOI

10.1109/TMAG.2015.2438018

Filename

7113854