A structural evidence of polar clusters in PLZT relaxor ceramics

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Author(s):	Botero, Eriton Rodrigo ; Marcelino de Azevedo, Douglas Henrique ; Eiras, Jose Antonio ; Milton, Flavio Paulo ; Garcia, Ducinei Total Authors: 5
Document type:	Journal article
Source:	Integrated Ferroelectrics; v. 174, n. 1, p. 6-pg., 2016-01-01.
Abstract
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)