Abstract
Magnetoelastic stress measurements in rare-earth superlattices have been done by using a cantilever capacitive method, working at low temperatures and high fields. We have derived expressions relating the cantilever curvatures and the magnetoelastic stress parameters in anisotropie thin filais and superlattices with hexagonal symmetry. deposited onto a crystalline substrate. From the values of the basal-plane-symmetry-breaking magnetoelastic stress parameter B r,2. determined as a function of the temperature and of the magnetic and non-magnetic layer thicknesses in two series of Ho/Lu and Ho/Y superlattices, we have found interfacial contributions to B r,2, as well as an epitaxial stress dependence of the volume magnetoelastic stress. We have also proved the single-ion crystal field character of the magnetoelastic interaction, for volume and interface stresses.
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Arnaudas, J.I., Del Moral, A., Ciria, M., De La Fuente, C., Ward, R.C.C., Wells, M.R. (1998). Bulk and Interface Magnetostrictions in Rare-Earth Superlattices. In: Bar’yakthar, V.G., Wigen, P.E., Lesnik, N.A. (eds) Frontiers in Magnetism of Reduced Dimension Systems. NATO ASI Series, vol 49. Springer, Dordrecht. https://doi.org/10.1007/978-94-011-5004-0_30
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