Strain-driven formation of epitaxial nanostructures in brownmillerite strontium cobaltite thin films.

ABSTRACT: Nanostructured materials can display unique physical properties and are of particular interest for their new functionalities. Epitaxial growth is a promising approach for the controlled synthesis of nanostructures with desired structures and crystallinity. SrCoO_x is a particularly intriguing material owing to a topotactic phase transition between an antiferromagnetic insulating brownmillerite SrCoO_2.5 (BM-SCO) phase and a ferromagnetic metallic perovskite SrCoO_3-δ (P-SCO) phase depending on the oxygen concentration. Here, we present the formation and control of epitaxial BM-SCO nanostructures by substrate-induced anisotropic strain. Perovskite substrates with a (110)-orientation and which allow for compressive strain result in the creation of BM-SCO nanobar

SUBMITTER: Han H 

PROVIDER: S-EPMC10041114 | biostudies-literature | 2023 Mar

REPOSITORIES: biostudies-literature