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Q-Band Ferromagnetic Resonance Study of Fe Thin Films on GaAs(001) Deposited by RF Magnetron Sputtering | IEEE Journals & Magazine | IEEE Xplore

Q-Band Ferromagnetic Resonance Study of Fe Thin Films on GaAs(001) Deposited by RF Magnetron Sputtering


Abstract:

The magnetic properties of epitaxial Fe(001) films, prepared on GaAs(001) substrates by RF magnetron sputtering, were investigated by ferromagnetic resonance spectroscopy...Show More

Abstract:

The magnetic properties of epitaxial Fe(001) films, prepared on GaAs(001) substrates by RF magnetron sputtering, were investigated by ferromagnetic resonance spectroscopy operating at Q-band (35 GHz). The in-plane angle dependence of the resonance fields showed four-fold magnetic anisotropy with an easy (hard) direction along [100] ([110]). The anisotropy constant was slightly smaller than the magnetocrystalline anisotropy constant of bulk Fe. Ferromagnetic resonance linewidths, caused by the magnetic damping of Fe films, were narrow (<;70 Oe) and independent of the in-plane magnetic field directions. It will be shown that the observed linewidth gives good estimate of the upper bound of the Gilbert-type damping in Fe thin films.
Published in: IEEE Transactions on Magnetics ( Volume: 47, Issue: 12, December 2011)
Page(s): 4682 - 4685
Date of Publication: 06 June 2011

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