Quantitative strain-field measurement of 1:1 B-site cation ordered domains and antiphase boundaries in Pb(Sc1/2Ta1/2)O-3 ceramics by high-resolution transmission electron microscopy - art. no. 051908

[摘要]：Quantitative strain measurements of the 1:1 B-site cation ordered domains, antiphase boundaries, and dislocations in a highly ordered Pb(Sc1/2Ta1/2)O-3 ceramic have been carried out by high-resolution transmission electron microscopy and geometric phase analysis. A phase shift of pi between two adjacent ordered domains across an antiphase boundary is determined unambiguously. The maximum in-plane strain and lattice rotation induced by a dislocation are 9.5% and 5.4 degrees, respectively. In a defect-free antiphase boundary, the maximum in-plane strain and lattice rotation are 1.8% and 0.9 degrees, respectively. The strain mainly concentrates inside the antiphase boundary.

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