Abstract
Spin-wave resonance (SWR) in high quality epitaxial La 0.7 Mn 1.3 O 3 films prepared by dc-magnetron sputtering was studied at a frequency of 9.25 GHz. SQUID magnetometry was used to study the film magnetization. A well-resolved structure of the SWR spectrum consists of surface and bulk spin waves modes. The experimentally found SWR spectra are in good agreement with the theory of SWR based on the surface-inhomogeneity model. Using the SWR and magnetization data, the spin-wave stiffness constant and the values of the bulk anisotropies were deduced.
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