Formation of 0.65 Pb(Mg1/3Nb2/3)O3–0.35 PbTiO3 Using a High-Energy Milling Process
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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Document Type: Research Article
Affiliations: Jozef Stefan Institute, SI-1000 Ljubljana, Slovenia
Publication date: 2007-01-01