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

Abstract: 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.

Author(s): Mesquita, A; Michalowicz, A; Moscovici, J; Pizani, PS & Mastelaro, VR.

JOURNAL OF SOLID STATE CHEMISTRY

DOI: 10.1016/j.jssc.2016.05.016