2023 journal article
Analysis of Ba(Mg<sub>1/3</sub>, Ta<sub>2/3</sub>)O<sub>3</sub> by atomic-resolution scanning transmission electron microscopy
Japanese Journal of Applied Physics, 62(SM).
Contributors: S. Ootsuki*, R. Masaoka*, S. Calderon *, S. Funni * & E. Dickey*
open access via iopscience.iop.org (publisher PDF)
Source: ORCID
Added: February 1, 2024
Abstract The crystal structure of Ba(Mg1/3, Ta2/3)O3, which is thought to contribute to its microwave properties, was analyzed at the atomic resolution using scanning transmission electron microscopy (STEM). Using STEM, Ba(Mg1/3, Ta2/3)O3 exhibits an ABO3-type perovskite structure observed in the [110] direction with two structures identified: a disordered region, in which Mg and Ta atoms randomly occupy the B site, and an ordered region, in which Mg and Ta atoms are ordered. In the disordered region, the displacement directions of the Ba∣O and Mg/Ta atomic columns were random, whereas in the ordered region, the displacement directions of the Ba∣O and Mg atomic columns were random. The Ta atomic columns were displaced toward the neighboring Mg atomic columns. This structural change may affect the microwave properties of Ba(Mg1/3, Ta2/3)O3.