A structural evidence of polar clusters in PLZT relaxor ceramics

Autor(es)

Botero, Eriton Rodrigo ; Marcelino de Azevedo, Douglas Henrique ; Eiras, Jose Antonio ; Milton, Flavio Paulo ; Garcia, Ducinei

• Tipo de documento: Artigo Científico
• Fonte: Integrated Ferroelectrics; v. 174, n. 1, p. 6-pg., 2016-01-01.

Resumo

In this paper, a quantification of the polar/non-polar phases of perovskite single-phase relaxor ferroelectric ceramics of lanthanum modified lead titanate zirconate (PLZT x/65/35, x = 5, 8, 9 and 10%) was performed by Rietveld refinement using measurements obtained with Cu k radiation and with high-resolution synchrotron radiation. The refinements were performed concerning two crystalline phases, being one of them nonpolar (Pm-3m) and the other polar. The refinement results showed the relationship between the polar/nonpolar phases and the La content in PLZT, suggesting the existence of polar clusters of relaxor ferroelectric ceramics. (AU)

• Processo FAPESP: 04/13751-5 - Propriedades óticas e eletro-óticas de cerâmicas ferroelétricas do sistema (Pb,La)ZrTiO3 dopado com íons terras-raras
• Beneficiário: Eriton Rodrigo Botero
• Modalidade de apoio: Bolsas no Brasil - Doutorado Direto