Title :
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
fDate :
11/1/1993 12:00:00 AM
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;
Journal_Title :
Magnetics, IEEE Transactions on
