Controlled Growth of Sr_x Ba_1-x Nb₂ O₆ Hopper- and Cube-Shaped Nanostructures by Hydrothermal Synthesis.

ABSTRACT: Controlling the shape and size of nanostructured materials has been a topic of interest in the field of material science for decades. In this work, the ferroelectric material Sr_x Ba_1-x Nb₂ O₆ (x=0.32-0.82, SBN) was prepared by hydrothermal synthesis, and the morphology is controllably changed from cube-shaped to hollow-ended structures based on a fundamental understanding of the precursor chemistry. Synchrotron X-ray total scattering and PDF analysis was used to reveal the structure of the Nb-acid precursor, showing Lindqvist-like motifs. The changing growth mechanism, from layer-by-layer growth forming cubes to hopper-growth giving hollow-ended structures, is attributed to differences in supersaturation. Transmission electron microscopy revealed

SUBMITTER: Grendal OG 

PROVIDER: S-EPMC7496942 | biostudies-literature | 2020 Jul

REPOSITORIES: biostudies-literature