Abstract
Recent studies of elastic properties of superlattice thin films indicate that variations in elastic moduli often occur when the composition modulation wavelength is reduced below about 5 nm. The magnitude of these elastic anomalies is generally of the order of 15 to 30%, which is much smaller than the enhancements associated with the “supermodulus effect.” Superlattices that do display modulus variations appear to have relatively well defined interfaces, whereas systems with more diffuse interfaces display little or no effect. Recent models for the modulus anomalies, and for concomitant lattice parameter variations, have been based on effects related to the high density of interfaces characteristic of artificially multilayered thin films.
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Cammarata, R.C. (1993). Recent Studies of the Supermodulus Effect. In: Nastasi, M., Parkin, D.M., Gleiter, H. (eds) Mechanical Properties and Deformation Behavior of Materials Having Ultra-Fine Microstructures. NATO ASI Series, vol 233. Springer, Dordrecht. https://doi.org/10.1007/978-94-011-1765-4_10
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DOI: https://doi.org/10.1007/978-94-011-1765-4_10
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