Relationship between ferroelectric properties and local structure of Pb1-xBaxZr0.40Ti0.60O3 ceramic materials studied by X-ray absorption and Raman spectroscopies

Autor(es)

Mesquita, Alexandre ^{[1, 2, 3, 4]} ; Michalowicz, Alain ^{[2, 3]} ; Moscovici, Jacques ^{[2, 3]} ; Pizani, Paulo Sergio ^[5] ; Mastelaro, Valmor Roberto ^[4]

Afiliação do(s) autor(es)

^[1] UNESP Univ Estadual Paulista, Inst Geociencias & Ciencias Exatas, Dept Fis, Av 24-A, 1515, BR-13506900 Rio Claro, SP - Brazil

^[2] CNRS, Inst Chim & Mat Paris Est, 2 Rue Henri Dunant, F-94320 Thiais - France

^[3] Univ Paris Est Creteil, 2 Rue Henri Dunant, F-94320 Thiais - France

^[4] Univ Sao Paulo, Inst Fis Sao Carlos, Av Trabalhador Sao Carlense 400, Sao Carlos, SP - Brazil

^[5] Univ Fed Sao Carlos, Dept Fis, Rodovia Washington Luis S-N, BR-13565905 Sao Carlos, SP - Brazil

• Tipo de documento: Artigo Científico
• Fonte: Journal of Solid State Chemistry; v. 240, p. 16-22, AUG 2016.
• Citações Web of Science: 1

Resumo

This paper reports on the structural characterization of Pb1-xBaxZr0.40Ti0.60O3 (PBZT) ferroelectric ceramic compositions prepared by the conventional solid state reaction method. X-ray absorption spectroscopy (XAS) and Raman spectroscopy were used in the probing of the local structure of PBZT samples that exhibit a normal or relaxor ferroelectric behavior. They showed a considerable local disorder around Zr and Pb atoms in the samples of tetragonal or cubic long-range order symmetry. The intensity of the E(TO3) mode in the Raman spectra of PBZT relaxor samples remains constant at temperatures lower than T-m, which has proven the stabilization of the correlation process between nano domains. (C) 2016 Elsevier Inc. All rights reserved. (AU)

• Processo FAPESP: 07/00011-1 - Síntese e caracterização estrutural de compostos ferroelétricos relaxores Pb1-xRxZr0,40Ti0,60O3 (R = La, BA)
• Beneficiário: Alexandre Mesquita
• Modalidade de apoio: Bolsas no Brasil - Doutorado