We report Brillouin light scattering data taken from an exchange spring bilayer, Co/CoPt. The results are analysed using a semi-classical model in the long wavelength limit, and we demonstrate how a measure of an anomalous volume anisotropy, which we tentatively ascribe to a magnetoelastic effect, can be obtained from frequency versus field measurements in this system. (C) 2004 Elsevier B.V. All rights reserved.
Crew, D., Stamps, R., Lui, H. Y., Wang, Z. K., Kuok, M. H., Ng, S. C., ... Lewis, L. H. (2004). Spin wave excitations in exchange spring Co/CoPt thin film bilayers. Journal of Magnetism and Magnetic Materials, 272-276(1), 273-274. https://doi.org/10.1016/j.jmmm.2004.04.061