Synthesis and characterization of PLZT (9/65/35) by the Pechini method and partial oxalate

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Data

1998-05-01

Autores

Cerqueira, M.
Nasar, R. S.
Leite, E. R.
Longo, Elson [UNESP]
Varela, José Arana [UNESP]

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Título de Volume

Editor

Elsevier B.V.

Resumo

ZrTiO4 (ZT), obtained by the Pechini method, was used as precursor for obtaining PLZT (lead lanthanum zirconium titanate). An aqueous solution of oxalic acid was prepared with particles of ZT, Pb(NO3)(2) and La2O3. After the PbC2O4 and La2O3 precipitate on ZT particles, the materials were calcined and X-ray diffraction (XRD) showed the cubic phase of PLZT. This material was sintered, in two steps, and a density of about 8.0 g/cm(3) was obtained. After the second sintering the XRD pattern showed the occurrence of tetragonal and rhombohedral phases. This was caused by a stoichiometric deviation and the material showed a high optical transparency. (C) 1998 Elsevier B.V. B.V. All rights reserved.

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Palavras-chave

synthesis, Pechini process, zirconium titanate, ZrTiO4, Pb containing ZrTiO4 (PLZT)

Como citar

Materials Letters. Amsterdam: Elsevier B.V., v. 35, n. 3-4, p. 166-171, 1998.