The microstructure of PLZT tranparent ferroelectric ceramics were studied by using the HREM techniques and electron diffraction study. The following experimental results were obtained: (1) The structure of micro-domains presented in the cubic α phase is exactly the same structure of its ferroelectric β phase after poling. The fringe shape micro-regions appeared in the HREM microphotograph of 7.9/70/30 PLZT is the result of lattice overlapping of the orthorhombic micro-domains and the cubic α phase matrix.
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Yin et al. (1988) studied this question.
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