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BIBTEX RIS

Phase Characterization of Lead Zirconate Titanate Obtained from Organic Solutions of Citrates

1992; Wiley; Volume: 75; Issue: 8 Linguagem: Inglês

10.1111/j.1151-2916.1992.tb04469.x

1551-2916

M.A. Zaghete, C.O. Paiva-Santos, José Manuel Rey Varela Rey Varela, E. Longo, Yvonne Primerano Mascarenhas,

Thermal and Kinetic Analysis

Lead zirconate titanate (PZT) with several Zr/Ti ratios was prepared by the organic solution of citrates of the respective cations. The Rietveld method was applied to perform quantitative analysis of the coexisting phases. The ratio of tetragonal/rhombohedral phases increased with calcination temperature. For the composition where Zr/Ti = 53/47, the tetragonal quantity varied from 25% to 35% for temperatures ranging from 600° to 800°C. For the powder with Zr/Ti = 57/43, only the rhombohedral phase was observed after calcination at 700°C. For the powder with Zr/Ti = 49/51, only the tetragonal phase was observed after calcination at 800°C. The amount of tetragonal phase was controlled in Zr/Ti = 55/45 by seeding the powder with the tetragonal phase of PZT.