Aktas, B. and Heinrich, B. and Woltersdorf, G. and Urban, R. and Tagirov, L. R. and Yildiz, F. and Oezdogan, K. and Oezdemir, M. and Yalcin, O. and Rameev, B. Z.
Magnetic anisotropies in ultrathin iron films grown on the surface-reconstructed GaAs substrate.
Journal of Applied Physics 102 (1), 013912.
Magnetic anisotropies of epitaxial ultrathin iron films grown on the surface-reconstructed GaAs substrate were studied. Ferromagnetic
resonance technique was exploited to determine magnetic parameters of
the films in the temperature range of 4-300 K. Extraordinary angular
dependence of the FMR spectra was explained by the presence of fourfold
and twofold in-plane anisotropies. A strong in-plane uniaxial
anisotropy with magnetic hard axis along the [1 (1) over bar0]
crystallographic direction is present at the GaAs/Fe(001) interface
while a weak in-plane uniaxial anisotropy for the Fe grown on Au has
its easy axis oriented along [1 (1) over bar0]. A linear dependence
of the magnetic anisotropies as a function of temperature suggests that
the strength of the in-plane uniaxial anisotropy is affected by the
magnetoelastic anisotropies and differential thermal expansion of
contacting materials. (c) 2007 American Institute of Physics.
|Subjects:||500 Science > 530 Physics|
|Refereed:||Yes, this version has been refereed|
|Created at the University of Regensburg:||Unknown|
|Deposited On:||27 May 2010 07:39|
|Last Modified:||20 Jul 2011 22:28|