Open AccessLocal Excitation of Ferromagnetic Resonance and Its Spatially Resolved Detection With an Open-Ended Radio-Frequency Probe
Author(s) -
Toshu An,
Nobuhito Ohnishi,
Toyoaki Eguchi,
Yukio Hasegawa,
Pavel Kabos
Publication year - 2010
Publication title -
ieee magnetics letters
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.428
H-Index - 23
eISSN - 1949-3088
pISSN - 1949-307X
DOI - 10.1109/lmag.2010.2040247
Subject(s) - fields, waves and electromagnetics
A local excitation of ferromagnetic resonance (FMR) and its detection were performed by using an open-ended radio-frequency (RF) probe. The RF probe is composed of a coaxial cable transmitting broadband RF waves over 10 GHz and a sharp metal tip attached to its end. In the reflection spectrum (S 11) taken on a polycrystalline yttrium iron garnet disk, three kinds of FMR absorption signals were observed. Intensity of the three signals showed strong spatial dependences over the sample, demonstrating the potential of the local probe for spatially resolved FMR microscopy.