Combinatorial library films of HfO2-TiO2-Y2O3, a high-k dielectric system, grown by pulsed laser deposition, exhibit visible boundary lines separating amorphous and crystalline phases. By changing processing space parameters, specifically substrate temperature during deposition and composition of the library film, we are able to manipulate the boundary and hence, the microstructural properties of the film. High-throughput x-ray diffraction and spectroscopic reflectometry are essential tools for measuring the properties of the resulting library films altered via these changes in processing. Electrical measurements confirm that the dielectric constant of the library films are both composition and microsctructure dependent.
Citation: Journal of Applied Physics
Pub Type: Journals
combinatorial, high-k, pulsed laser deposition