Abstract
A study of the magnetoelastic behavior of some rare-earth based thin films and superlattices (SLs) is reported. Magnetoelastic stress (MS) measurements are made by a cantilever capacitive technique over a wide range of temperatures (10–30 K) and magnetic fields (up to 12 T). Expressions are derived which relate the cantilever curvatures and the magnetoelastic stresses in anisotropic thin films and SLs (of cubic symmetry) deposited on crystalline substrates. The magnetoelastic energy associated with the interfaces and the epitaxial stress dependence of the volume MS are investigated by studying the basal plane MS in Hon/Lu15 and Ho10/YmSLs: interface MSs even higher than the volume ones are obtained, and the effect of the epitaxial strain on the bulk MSs is large. The MS contributions are also deduced for Dy/Y and Er/Lu SLs, but for ER/Lu incomplete saturation leads to inconclusive results. Although the latter also happens in Ho/Tm SLs, the effect of the epitaxial strain on the bulk MSs is large. The MS cl...
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