Exchange stiffness in the Co2FeSi Heusler compound

6533b820fe1ef96bd12798a4

RESEARCH PRODUCT

Exchange stiffness in the Co2FeSi Heusler compound

O. Gaier Simon Trudel Jaroslav Hamrle Burkard Hillebrands H. Schneider Gerhard Jakob

subject

Acoustics and Ultrasonics Condensed matter physics business.industry Chemistry Intermetallic engineering.material Condensed Matter Physics Heusler compound Spectral line Surfaces Coatings and Films Electronic Optical and Magnetic Materials Pulsed laser deposition Magnetic field Brillouin zone Condensed Matter::Materials Science Optics Spin wave engineering Condensed Matter::Strongly Correlated Electrons Thin film business

description

Using Brillouin light scattering spectroscopy, we determine the spin-wave exchange stiffness D and the exchange constant A for thin films of the full Heusler compound Co2FeSi prepared by pulsed laser deposition. The thermal spin-wave spectra were measured in various magnetic fields, for different transferred spin-wave momenta, and for different film thicknesses. Fitting the observed spin-wave frequencies, we find an extraordinarily large value of

year	journal	country	edition	language
2009-11-12	Journal of Physics D: Applied Physics

https://doi.org/10.1088/0022-3727/42/23/232001

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