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Elastic Properties of Pure and Hydrogenated Ce/Fe Multilayer Films
Published online by Cambridge University Press: 15 February 2011
Abstract
The study of the elastic properties of pure Ce/Fe multilayers throughout the structural phase transition of the Fe layers from crystalline to amorphous reveals striking similarities to the crystal-to-glass transition in bulk metallic materials which is driven by a shear instability of the crystal lattice. The transition is reflected in a pronounced minimum (∼ –70%) of the flexural modulus of the multilayers as determined by a vibrating-reed technique. Hydrogenation leads to multilayers composed of CeH∼2/Fe, with distinctly different moduli depending on the texture of the Fe sublayers. For multilayers with a Fe (111) texture a reorientation transition of the spontaneous magnetization is observed at a well-defined temperature. This transition is accompanied by a relaxation of thermal stresses and a considerable softening (∼30%) of the flexural modulus.
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- Copyright © Materials Research Society 1995