Substrate-Controlled Response Coefficients in Thin Films.

ABSTRACT: To obtain materials with desired properties, material compositions are primarily altered, whereas thin films offer additional unique avenues. By combining state-of-the-art first-principles calculations and experimental investigations of thin films of strontium titanate as an exemplary representative of a broad class of perovskite oxides and the extensive family of ferroelectrics, a novel approach is presented to achieving superior material responses to external stimuli. The findings reveal that substrate-imposed deformations, or strains, significantly alter the frequencies and magnitudes of atomic vibrations in thin films. Consequently, material-specific response-stimulus coefficients can become strain-dependent. The strain-dependent Curie constant, which characterizes the dielectric respo

SUBMITTER: Tyunina M 

PROVIDER: S-EPMC12631899 | biostudies-literature | 2025 Nov

REPOSITORIES: biostudies-literature