Influence of the Morphology of Barium Strontium Titanate Thin Films on the Ferroelectric and Dielectric Properties

摘要

In the present study, Ba_(0.8)Sr_(0.2)TiO_3 thin films were realized by chemical solution deposition and spin-coating on stainless steel substrates using the classical multi-layer technique. In order to influence the morphology of the films, three solutions with a different concentration, 0.1 M (BST0.1M), 0.3 M (BST0.3M) and 0.6 M (BST0.6M), were prepared. The dilution is shown to influence the grain size of the films and as consequence also its ferroelectric and dielectric properties.