Broadband ferromagnetic resonance of Ni81Fe19 wires using a rectifying effect
A. Yamaguchi, K. Motoi, H. Miyajima, Y. Miyashita, Y. Sanada
TL;DR
This paper investigates broadband ferromagnetic resonance in Ni81Fe19 wires using a rectifying effect, analyzing magnetization dynamics via magnetoresistance oscillations induced by RF fields.
Contribution
It introduces a method to measure ferromagnetic resonance using rectification effects in Ni81Fe19 wires on different CPW configurations.
Findings
Resonance frequency depends on magnetic field.
Rectification spectrum matches uniform magnetization precession model.
Method enables broadband FMR measurement in nanoscale wires.
Abstract
The broadband ferromagnetic resonance measurement using the rectifying effect of Ni81Fe19 wire has been investigated. One wire is deposited on the center strip line of the coplanar waveguide (CPW) and the other one deposited between two strip lines of CPW. The method is based on the detection of the magnetoresistance oscillation due to the magnetization dynamics induced by the radio frequency field. The magnetic field dependences of the resonance frequency and the rectification spectrum are presented and analytically interpreted on the standpoint of a uniform magnetization precession model.
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