A structural evidence of polar clusters in PLZT relaxor ceramics. Issue 174 (1st September 2016)

• Record Type: Journal Article
• Authors: Botero, Eriton Rodrigo; de Azevedo, Douglas Henrique Marcelino; Eiras, José Antônio; Milton, Flavio Paulo; Garcia, Ducinei
• Is Part Of: Integrated ferroelectrics. Issue 174(2016)
• Page Start: 50
• Page End: 55
• Publication Date: 2016-09-01
• Subjects: Relaxor ferroelectrics ceramics -- Rietveld refinement -- PLZT; Ferroelectric devices -- Periodicals; Integrated circuits -- Periodicals; 537.244805
• DOI: 10.1080/10584587.2016.1190596
• Languages: English
• ISSNs: 1058-4587

Abstract

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 kα 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.