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

Journal Article · Wed Jul 15 00:00:00 EDT 2015 · AIP Advances

DOI:https://doi.org/10.1063/1.4926586· OSTI ID:22493936

Costa, R. C. da ^[1]; Toledo, T. A. de; Espinosa, J. W. M. ^[2]

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1. Universidade Federal de São Carlos, Departamento de Física, São Carlos-SP, 13565-905 (Brazil)
2. Universidade Federal de Goiás, Engenharia de Produção, Catalão-GO, 75704-020 (Brazil)

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.

• OSTI ID: 22493936
• Journal Information: AIP Advances, Vol. 5, Issue 7; Other Information: (c) 2015 Author(s); Country of input: International Atomic Energy Agency (IAEA); ISSN 2158-3226
• Country of Publication: United States
• Language: English

Related Subjects

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