Direct observation of ferrielectricity at ferroelastic domain boundaries in CaTiO3 by electron microscopy.


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… (More)
DOI: 10.1002/adma.201103717


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