Quantitative strain measurements of the 1:1 B-site cation ordered domains,

antiphase boundaries, and dislocations in a highly ordered Pb(Sc1/2Ta1/2)O3 ceramic

were carried out by high-resolution transmission electron microscopy and

geometric phase analysis. A phase shift of π between two adjacent ordered domains

across an antiphase boundary was determined unambiguously. The maximum inplane

strain and lattice rotation induced by a dislocation were 9.5% and 5.4°,

respectively. In a defect-free antiphase boundary, the maximum in-plane strain and

lattice rotation were 1.8% and 0.9°, respectively. The strain concentrated mainly

within the antiphase boundary.

Quantitative Strain-Field Measurement of 1:1 B-Site Cation Ordered Domains and

Antiphase Boundaries in Pb(Sc1/2Ta1/2)O3 Ceramics by High-Resolution

Transmission Electron Microscopy. C.W.Tai, Y.Lereah: Applied Physics Letters,

2009, 94[5], 051908