Dynamic effects of magnetic multilayer interlayer coupling [FMR modes]

Author

Pechan, Michael J. ; Xu, Jisheng ; Kelly, David M. ; Schuller, Ivan K.

Author_Institution

Dept. of Phys., Miami Univ., Oxford, OH, USA

Volume

29

Issue

6

fYear

1993

fDate

11/1/1993 12:00:00 AM

Firstpage

2720

Lastpage

2722

Abstract

Coupling between magnetic layers in multilayer samples gives rise to dynamic effects which are manifest as anomalous modes in ferromagnetic resonance (FMR) spectra. According to the model presented, antiferromagnetic (ferromagnetic) coupling would produce such modes on the high (low) field side of the uniform FMR mode. Anomalous modes, observed in Fe/Cu and Fe/Cr multilayer samples, are analyzed to obtain coupling constants as a function of nonmagnetic layer thickness. The modes are shown to arise from 180° out-of-phase interlayer magnetization precession. The coupling is observed to be antiferromagnetic in all samples and to be an order of magnitude greater in the Cr system than in the Cu system

Keywords

antiferromagnetic properties of substances; chromium; copper; exchange interactions (electron); ferromagnetic properties of substances; ferromagnetic resonance; iron; magnetic multilayers; magnetisation; Fe-Cr; Fe-Cu; Fe/Cr; Fe/Cu; anomalous modes; antiferromagnetic coupling; dynamic effects; ferromagnetic resonance; magnetic multilayer interlayer coupling; model; nonmagnetic layer thickness; out-of-phase interlayer magnetization precession; Antiferromagnetic materials; Atomic layer deposition; Chromium; Couplings; Iron; Magnetic analysis; Magnetic multilayers; Magnetic resonance; Physics; Saturation magnetization;

fLanguage

English

Journal_Title

Magnetics, IEEE Transactions on

Publisher

ieee

ISSN

0018-9464

Type

jour

DOI

10.1109/20.280932

Filename

280932