This title appears in the Scientific Report :
2003
Please use the identifier:
http://hdl.handle.net/2128/914 in citations.
Please use the identifier: http://dx.doi.org/10.1063/1.1554758 in citations.
Spin-wave modes and line broadening in strongly coupled epitaxial Fe/Al/Fe and Fe/Si/Fe trilayers observed by Brillouin light scattering
Spin-wave modes and line broadening in strongly coupled epitaxial Fe/Al/Fe and Fe/Si/Fe trilayers observed by Brillouin light scattering
We report on the spin-wave excitation frequencies and the broadening of the mode linewidths in Stokes and anti-Stokes Brillouin light scattering spectra of strongly exchange coupled (2-6.5 mJ/m(2)), epitaxial trilayers with the following structures: Fe(80 Angstrom)/Si wedge/Fe(100 Angstrom) and Fe(5...
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Personal Name(s): | Kuanr, B. K. |
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Buchmeier, M. / Gareev, R. R. / Bürgler, D. E. / Schreiber, R. / Grünberg, P. A. | |
Contributing Institute: |
Elektronische Eigenschaften; IFF-IEE |
Published in: | Journal of applied physics, 93 (2003) S. 3427 |
Imprint: |
Melville, NY
American Institute of Physics
2003
|
Physical Description: |
3427 |
DOI: |
10.1063/1.1554758 |
Document Type: |
Journal Article |
Research Program: |
Kondensierte Materie |
Series Title: |
Journal of Applied Physics
93 |
Subject (ZB): | |
Link: |
Get full text OpenAccess |
Publikationsportal JuSER |
Please use the identifier: http://dx.doi.org/10.1063/1.1554758 in citations.
We report on the spin-wave excitation frequencies and the broadening of the mode linewidths in Stokes and anti-Stokes Brillouin light scattering spectra of strongly exchange coupled (2-6.5 mJ/m(2)), epitaxial trilayers with the following structures: Fe(80 Angstrom)/Si wedge/Fe(100 Angstrom) and Fe(50 Angstrom)/Al wedge/Fe(70 Angstrom). Both spacer materials yield qualitatively similar spectra which evolve in the same way when the spacer thickness increases. We determine the type of interlayer coupling and quantify its strength as a function of the spacer thickness by comparing and fitting the mode positions to a model calculation. Furthermore, we observe clearly different behaviors of the mode linewidths as a function of spacer thickness for the optic and acoustic modes. There are also strong differences between the Stokes and anti-Stokes side of the spectra. The largest linewidths of up to 8 GHz occur at spacer thicknesses between 5 and 8 Angstrom for both spacer materials. Lateral averaging and two-magnon scattering are qualitatively discussed as possible sources for the line-broadening. (C) 2003 American Institute of Physics. |