skip to main content

Title: Atomic substitution effects on the structural and vibrational properties of Ni{sub x}Pb{sub 1-x}TiO{sub 3}: X-ray diffraction and Raman scattering investigations

The effects of the atomic substitution of Pb by Ni in the PbTiO{sub 3} ferroelectric perovskite on the vibrational and structural properties was studied using x-ray diffraction and Raman scattering. It was observed that for Ni concentrations between 0.0 and 0.4, there is the formation of a solid solution with reduction of the Raman wavenumber of the E(TO1) soft mode and the tetragonallity factor, which influence directly the temperature of the tetragonal ferroelectric to cubic paraelectric phase transition, the Curie temperature. For concentrations greater than 0.4, it is observed the formation of a PbTiO{sub 3} and NiTiO{sub 3} composite, denounced by the recovering of the both, tetragonallity factor and the E(TO1) soft mode wavenumber. The values of the Curie temperatures were estimated by the Raman scattering measurements for temperatures ranging from 300 to 950 K.
Authors:
 [1] ;  [2] ; ;  [1] ;  [3]
  1. Universidade Federal de São Carlos, Departamento de Física, São Carlos-SP, 13565-905 (Brazil)
  2. (Brazil)
  3. Universidade Federal de Goiás, Engenharia de Produção, Catalão-GO, 75704-020 (Brazil)
Publication Date:
OSTI Identifier:
22493936
Resource Type:
Journal Article
Resource Relation:
Journal Name: AIP Advances; Journal Volume: 5; Journal Issue: 7; Other Information: (c) 2015 Author(s); Country of input: International Atomic Energy Agency (IAEA)
Country of Publication:
United States
Language:
English
Subject:
36 MATERIALS SCIENCE; COMPOSITE MATERIALS; CONCENTRATION RATIO; CUBIC LATTICES; CURIE POINT; ECOLOGICAL CONCENTRATION; FERROELECTRIC MATERIALS; LEAD COMPOUNDS; NICKEL COMPOUNDS; PEROVSKITE; PHASE TRANSFORMATIONS; RAMAN EFFECT; RAMAN SPECTROSCOPY; REDUCTION; SOLID SOLUTIONS; TEMPERATURE DEPENDENCE; TETRAGONAL LATTICES; TITANATES; X-RAY DIFFRACTION