Structural incommensurate modulation rule in hexagonal Ba(Ti1-xMx)O3-δ (M = Mn, Fe) multiferroics
Source abstract
Abstract
The structural incommensurate modulation (SIM) rule in hexagonal Ba(Ti1-xMx)O3-δ (1/18 ≤ x ≤ 1/3, M = Mn, Fe) multiferroic ceramics is investigated using transmission electron microscope (TEM). Our systematic analysis on the modulation characteristics in the electron diffraction patterns, especially along [001] direction, reveals that three types of anti-phase domain boundaries (APBs) dominate the SIMs. According to the derived APB models, the calculated oxygen vacancies at both O1 (face sharing) and O2 (corner sharing) sites qualitatively agree quite well with our previous results. Analysis on the high-resolution TEM images reveals that complex dislocation structures also play important roles in the formation of the SIMs.
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Research context
OpenAlex topics: Multiferroics and related materials · Ferroelectric and Piezoelectric Materials · Dielectric properties of ceramics
SciVX discovery tags are terminology-based. OpenAlex topics are source-provided classifications.
Affiliations
Chinese Academy of Sciences 1 Beijing National Laboratory for Condensed Matter Physics, Institute of Physics, , Beijing, 100190, P. R. China
EPFL-Swiss Federal Institute of Technology 2 Ceramics Laboratory, , Lausanne, 1015, Switzerland
Research Centre Jülich 3 Ernst Ruska-Centre for Microscopy and Spectroscopy with Electrons (ER-C), , Jülich, 52425, Germany
Funding
National Natural Science Foundation of China
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