Published April 21, 2009 | Version v1
Journal article Metadata-only

Brillouin light scattering study of Co2Cr0.6Fe0.4Al and Co2FeAl Heusler compounds

Creators

  • 1. Fachbereich Physik and Forschungszentrum OPTIMAS, Technische Universitaet Kaiserslautern, Erwin-Schroedinger-Strasse 56, D-67663 Kaiserslautern (Germany)
  • 2. Institut fuer Physik, Johannes-Gutenberg-Universitaet Mainz, Staudinger Weg 7, D-55099 Mainz (Germany)

Description

The thermal magnonic spectra of Co2Cr0.6Fe0.4Al (CCFA) and Co2FeAl were investigated using Brillouin light scattering (BLS) spectroscopy. For CCFA, the exchange constant A (exchange stiffness D) is found to be 0.48 ± 0.04 μerg cm-1 (203 ± 16 meV A2), while for Co2FeAl the corresponding values of 1.55 ± 0.05 μerg cm-1 (370 ± 10 meV A2) were found. The observed asymmetry in the BLS spectra between the Stokes and anti-Stokes frequencies was assigned to an interplay between the asymmetrical profiles of hybridized Damon-Esbach and perpendicular standing spin-wave modes, combined with the optical sensitivity of the BLS signal to the upper side of the CCFA or Co2FeAl film.

Availability note (English)

Available from http://dx.doi.org/10.1088/0022-3727/42/8/084004

Additional details

Identifiers

DOI
10.1088/0022-3727/42/8/084004;
PII
S0022-3727(09)94722-2;

Publishing Information

Journal Title
Journal of Physics. D, Applied Physics
Journal Volume
42
Journal Issue
8
Journal Page Range
[7 p.]
ISSN
0022-3727
CODEN
JPAPBE

INIS

Country of Publication
United Kingdom
Country of Input or Organization
International Atomic Energy Agency (IAEA)
INIS RN
42053156
Subject category
S36: MATERIALS SCIENCE;
Descriptors DEI
ASYMMETRY; BRILLOUIN EFFECT; CHROMIUM ALLOYS; COBALT ALLOYS; HEUSLER ALLOYS; IRON ALLOYS; LIGHT SCATTERING; SPECTROSCOPY; SPIN WAVES; THIN FILMS
Descriptors DEC
ALLOYS; ALUMINIUM ALLOYS; COHERENT SCATTERING; COPPER ALLOYS; COPPER BASE ALLOYS; CORROSION RESISTANT ALLOYS; FILMS; MANGANESE ALLOYS; SCATTERING; TRANSITION ELEMENT ALLOYS