Strong Eddy-Current Shielding of Ferromagnetic Resonance Response in Sub-Skin-Depth-Thick Conducting Magnetic Multilayers

Author

Maksymov, Ivan S. ; Zhaoyang Zhang ; Chang, Carole ; Kostylev, Mikhail

Author_Institution

Sch. of Phys., Univ. of Western Australia, Crawley, WA, Australia

Volume

5

fYear

2014

fDate

2014

Firstpage

1

Lastpage

4

Abstract

Exchange-coupled nonmagnetic metal (NM) and ferromagnetic metal (FM) multilayers are crucial for microwave magnonic and spintronic devices. These layered materials usually have total thicknesses smaller than the microwave skin depth. By using a stripline broadband ferromagnetic resonance spectroscopy technique, we experimentally demonstrate that the amplitude of the magnetization precession in the FM layer is strongly diminished by the shielding effect of microwave (612GHz) eddy currents circulating in the NM capping layers.

Keywords

eddy currents; electromagnetic shielding; exchange interactions (electron); ferromagnetic materials; ferromagnetic resonance; magnetic multilayers; magnetisation; eddy-current shielding; exchange coupling; frequency 6 GHz to 12 GHz; magnetization precession; nonmagnetic-metal-ferromagnetic-metal multilayers; stripline broadband ferromagnetic resonance spectroscopy technique; sub-skin-depth-thick conducting magnetic multilayers; Eddy currents; Magnetic multilayers; Magnetic resonance; Metamaterials; Microwave magnetics; Thin films; Magnetodynamics; Microwave magnetics; eddy currents; ferromagnetic resonance; metamaterials; microwave magnetics; thin films;

fLanguage

English

Journal_Title

Magnetics Letters, IEEE

Publisher

ieee

ISSN

1949-307X

Type

jour

DOI

10.1109/LMAG.2014.2379721

Filename

6983542