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The kinetic effect of annealing tweed pattern with a four-armed starfish-type structure factor T > Tc (a) to a stripe pattern with a dog’s bone structure (b). These experimental examples were taken from cuprate superconductors25 and highly twinned LaAlO3.26
Domain pattern formed after the collapse at the yield stress for a large system with 106 atoms (a) and (b) and small system (10 200 atoms) (c) and (d). The images (a) and (c) represent soft systems while (b) and (d) show hard systems (the colors refer to the local shear angles |Θvertical − 4°| + Θhorizontal, see Ref. 27).
(a) and (b) Diffuse scattering of strain induced microstructures for a sample with 106 atoms and soft nearest neighbor interactions. The range is from −0.04 to 0.04 reciprocal units. The soft system is shown in (a) and the hard system in (b). Note the slimmer arms of the starfish, as compared with the quenched sample in Fig. 1(a). The stronger concentration of the diffuse scattering originates from the stricter confinement of the twin domains along the elastically soft directions and the smaller number of junctions compared with tweed pattern. The same conditions for a sample with “hard” elastic interactions (b) shows the predominance of one domain orientation and fewer twin walls.
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