Direct observation of ferrielectricity at ferroelastic domain boundaries in CaTiO3 by electron microscopy.
basic_science · Level V
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- Record sourced from PubMed, PMID 22223264.
- Also identified by DOI 10.1002/adma.201103717.
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Abstract
High-resolution aberration-corrected transmission electron microscopy aided by statistical parameter estimation theory is used to quantify localized displacements at a (110) twin boundary in orthorhombic CaTiO(3). The displacements are 3-6 pm for the Ti atoms and confined to a thin layer. This is the first direct observation of the generation of ferroelectricity by interfaces inside this material which opens the door for domain boundary engineering.
Medical subject headings
- Calcium Compounds
- Electricity
- Microscopy, Electron, Transmission
- Oxides
- Titanium