Analysis of the Pb0.30CaxSryTiO3 ternary system: The effect of Ca2+ and Sr2+ cations on the electrical properties of PbTiO3
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Otros documentos de la autoría: Gouveia, Amanda; Ribeiro , Lara Kelly; Assis, Marcelo de; Longo, Elson; Andres, Juan; pontes, fenelon
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Mostrar el registro completo del ítemcomunitat-uji-handle:10234/9
comunitat-uji-handle2:10234/7013
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Título
Analysis of the Pb0.30CaxSryTiO3 ternary system: The effect of Ca2+ and Sr2+ cations on the electrical properties of PbTiO3Autoría
Fecha de publicación
2022-08-17Editor
Sao Paulo State University. Institute of ChemistryCita bibliográfica
Gouveia, A. F., Ribeiro, L. K., Assis, M., Longo, E., Andrés, J., & Pontes, F. M. L. (2022). Analysis of the Pb0.30CaxSryTiO3 ternary system: The effect of Ca2+ and Sr2+ cations on the electrical properties of PbTiO3. Eclética Química Journal, 47(2SI), 100–109. https://doi.org/10.26850/1678-4618eqj.v47.2SI.2022.p100-109Tipo de documento
info:eu-repo/semantics/articleVersión
info:eu-repo/semantics/publishedVersionPalabras clave / Materias
Resumen
Powder and thin films of the Pb0.30Ca0.10Sr0.60TiO3 (PCST 30/10/60) and Pb0.30Ca0.60Sr0.10TiO3 (PCST 30/60/10) ternary system were synthetized by the polymeric precursor method and the thin films deposited on the ... [+]
Powder and thin films of the Pb0.30Ca0.10Sr0.60TiO3 (PCST 30/10/60) and Pb0.30Ca0.60Sr0.10TiO3 (PCST 30/60/10) ternary system were synthetized by the polymeric precursor method and the thin films deposited on the Si/SiO2/Ti/Pt substrate. The effects of the Sr2+ and Ca2+ cations substitutions on the electrical and structural properties of the PbTiO3 were characterized by X-ray diffraction, Infrared, and Raman spectroscopy. Theoretical calculations were performed using the CRYSTAL06 program associated with the density functional theory and the B3LYP functional hybrid. Structural and electronic properties of the system were analyzed. The band gap values calculated for the PCST 30/10/60 and PCST 30/60/10 models were 3.35 and 3.41 eV, respectively. The results showed an evolution to a greater symmetry in the direction to the cubic SrTiO3 structure and the phase transition was characterized by the Curie temperature dependence. The broad bands above FE-PE phase transition temperature suggest a phase transition diffuse type. It is explained by a local symmetry disorder due to a higher Sr2+ and Ca2+ cations concentration in the PbTiO3 host lattice. [-]
Publicado en
Eclética Química Journal, 47(2SI), 2022Entidad financiadora
Fundaçao de Amparo à Pesquisa do Estado de São Paulo (FAPESP) | Universitat Jaume I | Ministerio de Ciencia, Innovación y Universidades (Spain)
Código del proyecto o subvención
2009/53433-6 | 2013/07296-2 | 2019/01732-1 | POSDOC/2019/30 | UJI-B2019-30 | PGC2018094417-B-I00
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info:eu-repo/semantics/openAccess
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