Brillouin light scattering studies of Co/GaAs(001) films

摘要

Thermal magnetic excitations in epitaxial Co films deposited on GaAs(001) surfaces have been studied at room temperature using Brillouin light scattering. The films have thicknesses in the range 3 to 20 nm. The variations of MSSW frequency with applied field at constant wavevector and the variation of MSSW frequency with wavevector at constant field have enabled the magnetizations and anisotropy fields to be determined. The variation of MSSW frequency as the films were rotated about the incident light axis enabled the form of the anisotropy to be determined.