Abstract
AbstractThe so‐called intermediate phase of pure PbZrO3 was investigated on a series of specimens by dielectric measurements and X‐ray diffraction. The results indicate that neither defects nor impurities are the origin of the phase. Only in specimens with a low content of pseudocubic [0 0 1]c domains does the intermediate phase appear on cooling. This preferred orientation suppresses the effect of out‐of‐phase oxygen octahedral rotations, which stabilize the antiferroelectric phase. As a result, the intermediate phase is present competitively in a narrow temperature range during cooling before the antiferroelectric phase transition.
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