High-Quality Heteroepitaxial Growth of Thin Films of the Perovskite Oxynitride CaTaO₂N: Importance of Interfacial Symmetry Matching between Films and Substrates.

ABSTRACT: Perovskite oxynitrides have been studied with regard to their visible light-driven photocatalytic activity and novel electronic functionalities. The assessment of the intrinsic physical and/or electrochemical properties of oxynitrides requires the epitaxial growth of single-crystalline films. However, the heteroepitaxy of perovskite oxynitrides has not yet matured compared to the progress realized in work with perovskite oxides. Herein, we report the heteroepitaxial growth of CaTaO₂N thin films with (100)_pc, (110)_pc, and (111)_pc crystallographic surface orientations (where the subscript pc denotes a pseudocubic cell) on SrTiO₃ substrates using reactive radio frequency magnetron sputtering, along with investigations of crystallinity and

SUBMITTER: Wakasugi T 

PROVIDER: S-EPMC7288696 | biostudies-literature | 2020 Jun

REPOSITORIES: biostudies-literature