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Brillouin light scattering has been exploited in situ to study spin waves in ultrathin Co/GaAs(001) films of different thickness in the range between 1 and 7 nm, i.e. both before and after the bcc-hcp phase transition. A marked evolution of the in-plane anisotropy has been observed in connection with the structural transformation. Measurements of the spin-wave frequency as a function of the in-plane...
The structural and magnetic properties of ultrathin Fe films, grown by e-beam evaporation on a Cu(100) single crystal, have been studied. The low-energy electron diffraction patterns account for a pseudomorphic growth of fcc-Fe(100) up to a thickness of a few nanometers, followed by a Pitsch transformation, consisting of bcc-Fe(110) domains. The magnetic properties of the films were investigated in...
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