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Title: Brillouin light scattering study of an exchange coupled asymmetric trilayer of Fe/Cr.

Abstract

The magnetic response of a (211) oriented asymmetric Fe trilayer [Fe(100 {angstrom})/Cr(9 {angstrom})/Fe(20 {angstrom})/Cr(20 {angstrom})/Fe(20 {angstrom})], in which the thickness of the Cr spacer layers was chosen to produce ferromagnetic coupling (F) between the two thinner Fe layers and antiferromagnetic coupling (AF) between the thicker Fe layer and the adjacent thin one, has been investigated using magnetization and Brillouin light scattering (BLS) measurements. The coupling coefficients, extracted by fitting the BLS and magnetization measurements with a theory treating the static and dynamic response on an equal footing, produced consistent values of the magnetic parameters. Our results confirm that the theoretical model used in interpreting both static and dynamic properties is valid even in systems in which F and AF coupling of the layers are simultaneously present. The theoretical model has also been extended to include the field dependence of the intensity of the Brillouin peaks. The calculated intensities are compared with the BLS spectra at different applied fields.

Authors:
; ; ; ; ; ; ; ;
Publication Date:
Research Org.:
Argonne National Lab. (ANL), Argonne, IL (United States)
Sponsoring Org.:
USDOE Office of Science (SC)
OSTI Identifier:
943037
Report Number(s):
ANL/MSD/JA-36925
Journal ID: ISSN 0039-6028; SUSCAS; TRN: US201002%%436
DOE Contract Number:  
DE-AC02-06CH11357
Resource Type:
Journal Article
Journal Name:
Surf. Sci.
Additional Journal Information:
Journal Volume: 454; Journal Issue: May 20, 2000; Journal ID: ISSN 0039-6028
Country of Publication:
United States
Language:
ENGLISH
Subject:
36 MATERIALS SCIENCE; IRON; CHROMIUM; BRILLOUIN EFFECT; ANTIFERROMAGNETISM; COUPLING; FERROMAGNETISM; LAYERS; LIGHT SCATTERING; MAGNETIZATION; MATHEMATICAL MODELS

Citation Formats

Vavassori, P., Grimsditch, M., Fullerton, E., Giovannini, L., Zivieri, R., Nizzoli, F., Materials Science Division, Univ. of Ferrara, and IBM Almaden Research Center. Brillouin light scattering study of an exchange coupled asymmetric trilayer of Fe/Cr.. United States: N. p., 2000. Web. doi:10.1016/S0039-6028(00)00252-1.
Vavassori, P., Grimsditch, M., Fullerton, E., Giovannini, L., Zivieri, R., Nizzoli, F., Materials Science Division, Univ. of Ferrara, & IBM Almaden Research Center. Brillouin light scattering study of an exchange coupled asymmetric trilayer of Fe/Cr.. United States. doi:10.1016/S0039-6028(00)00252-1.
Vavassori, P., Grimsditch, M., Fullerton, E., Giovannini, L., Zivieri, R., Nizzoli, F., Materials Science Division, Univ. of Ferrara, and IBM Almaden Research Center. Sat . "Brillouin light scattering study of an exchange coupled asymmetric trilayer of Fe/Cr.". United States. doi:10.1016/S0039-6028(00)00252-1.
@article{osti_943037,
title = {Brillouin light scattering study of an exchange coupled asymmetric trilayer of Fe/Cr.},
author = {Vavassori, P. and Grimsditch, M. and Fullerton, E. and Giovannini, L. and Zivieri, R. and Nizzoli, F. and Materials Science Division and Univ. of Ferrara and IBM Almaden Research Center},
abstractNote = {The magnetic response of a (211) oriented asymmetric Fe trilayer [Fe(100 {angstrom})/Cr(9 {angstrom})/Fe(20 {angstrom})/Cr(20 {angstrom})/Fe(20 {angstrom})], in which the thickness of the Cr spacer layers was chosen to produce ferromagnetic coupling (F) between the two thinner Fe layers and antiferromagnetic coupling (AF) between the thicker Fe layer and the adjacent thin one, has been investigated using magnetization and Brillouin light scattering (BLS) measurements. The coupling coefficients, extracted by fitting the BLS and magnetization measurements with a theory treating the static and dynamic response on an equal footing, produced consistent values of the magnetic parameters. Our results confirm that the theoretical model used in interpreting both static and dynamic properties is valid even in systems in which F and AF coupling of the layers are simultaneously present. The theoretical model has also been extended to include the field dependence of the intensity of the Brillouin peaks. The calculated intensities are compared with the BLS spectra at different applied fields.},
doi = {10.1016/S0039-6028(00)00252-1},
journal = {Surf. Sci.},
issn = {0039-6028},
number = May 20, 2000,
volume = 454,
place = {United States},
year = {2000},
month = {5}
}