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We have investigated the synthesis of lead‐magnesium‐niobate–lead‐titanate perovskite powder using high‐energy milling of the constituent oxides. The compositions of the crystalline and amorphous phases as a function of milling time were determined with X‐ray powder diffraction using a Rietveld refinement. The perovskite can be formed by two reaction routes. In the initial stage of milling, it is formed directly from the highly activated nano‐sized constituent oxides, and after a certain milling time it is mainly formed from a pyrochlore phase. The obtained as‐milled powder consists of crystalline perovskite and an amorphous phase that crystallizes into the perovskite after heating at 800°C.
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Kuščer et al. (2006) studied this question.
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