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Fine-grained PLZT and TiO2 ceramics subjected to applied electric fields can, depending upon composition and temperature, undergo disorder-order structural transformations that carry the materials from non-polar to polar structures. This paper proposes that the observed transformations are the result of crystallographic shear processes that depend upon the presence of ordered, planar defect structures in the materials.
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A.H. Meitzler (1976) studied this question.
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