This thesis presents a study on inducing exceptionally large elastic strains in metallic thin films. This is enabled by a novel concept of 'lattice strain matching' using martensitic phase transforming NiTi substrates. Using this unique film-on-NiTi design, reversible and repeatable elastic strains up to 6.88% were achieved in Nb thin films. Such elastic lattice strains approach the theoretical limit and are unprecedented in the literature. In this study, a new XRD-based method for determining stress/strain states of textured thin films was also developed. The work also enables future development of elastic strain engineering of functional materials.
|Qualification||Doctor of Philosophy|
|Award date||19 Oct 2020|
|Publication status||Unpublished - 2020|