Title :
Local Excitation of Ferromagnetic Resonance and Its Spatially Resolved Detection With an Open-Ended Radio-Frequency Probe
Author :
Toshu An ; Nobuhito Ohnishi ; Toyoaki Eguchi ; Yukio Hasegawa ; Kabos, P.
Author_Institution :
PRESTO, Japan Sci. & Technol. Agency, Tokyo, Japan
fDate :
7/2/1905 12:00:00 AM
Abstract :
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.
Keywords :
discs (structures); ferromagnetic resonance; garnets; yttrium compounds; FMR absorption signals; YIG; broadband RF waves; coaxial cable; ferromagnetic resonance; open-ended radio-frequency probe; polycrystalline yttrium iron garnet disk; reflection spectrum; spatially resolved FMR microscopy; spatially resolved detection; Absorption; Coaxial cables; Garnets; Iron; Magnetic resonance; Probes; Radio frequency; Reflection; Spatial resolution; Yttrium; Magnetodynamics; ferrites; magnetostatic waves; microwave imaging;
Journal_Title :
Magnetics Letters, IEEE
DOI :
10.1109/LMAG.2010.2040247
