| Grant number: |
11/20536-7
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| Support type: | Scholarships in Brazil - Post-Doctorate |
| Effective date (Start): |
March 01, 2012
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| Effective date (End): |
February 28, 2014
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| Field of knowledge: | Engineering
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Materials and Metallurgical Engineering |
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| Principal Investigator: | Elson Longo da Silva |
| Grantee: | Debora da Silva Lima Pontes |
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| Home Institution: |
Centro de Ciências Exatas e de Tecnologia (CCET). Universidade Federal de São Carlos (UFSCAR). São Carlos , SP, Brazil
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| Associated research grant: | 08/57872-1 - National Institute for Materials Science in Nanotechnology,
AP.TEM
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Abstract
Nowadays, Perovskite ferroelectric oxides are multifunctional materials that have been the focus of intense technologic and scientific research. They can even show novel coupling of multiple coexisting states, such as magnetism and superconductivity, or ferroelectricity and ferromagnetism. They can be used to fabricate various devices including nonvolatile ferroelectric random access memories, optico devices (photoluminescence) microsensors, transparent conducting oxide (TCOs) and optico-eletronic devices. This research proposes to make use of the experimental procedure and DFT computational tools to investigate the multifunctional properties of some chemically-specific perovskite oxides ABO3 structures, in particular Pb1-xSrxTi1-yFeyO3 (PSTF) in the form of thin film and bulk. In addition, a systematic study of structural properties in PSTF, as a function of dopants (ions Fe) will employ X-ray absorption spectroscopy (XAS) methods, which can provide crucial structural information with relation of the Fe valence state and local structure around the Ti and Fe atoms. On the other hand, ferroelectric properties will be investigated mainly by results from displacement of Ti and/or Fe ions with respect to the oxygen cage. Among the ferroelectric oxide multifunctional properties, we specifically want to investigate optic (photoluminescence) constructing supercell models in DFT calculate.
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Scientific publications
(10)
(References retrieved automatically from Web of Science and SciELO through information on FAPESP grants and their corresponding numbers as mentioned in the publications by the authors)
PADOVINI, D. S. S.;
MAGDALENA, A. G.;
CAPELI, R. G.;
LONGO, E.;
DALMASCHIO, C. J.;
CHIQUITO, A. J.;
PONTES, F. M.
Synthesis and characterization of ZrO2@SiO2 core-shell nanostructure as nanocatalyst: Application for environmental remediation of rhodamine B dye aqueous solution.
Materials Chemistry and Physics,
v. 233,
p. 1-8,
MAY 15 2019.
Web of Science Citations: 0.
PONTES, F. M.;
PONTES, D. S. L.;
CHIQUITO, A. J.;
COLMENARES, Y. N.;
MASTELARO, V. R.;
LONGO, E.
Electrical transport properties and complex impedance investigation of Fe3+ and La3+ co-doping (Pb,Sr)TiO3 thin films.
MATERIALS SCIENCE AND ENGINEERING B-ADVANCED FUNCTIONAL SOLID-STATE MATERIALS,
v. 236,
p. 179-188,
OCT 2018.
Web of Science Citations: 0.
BASTOS, W. B.;
LONGO, E.;
CHIQUITO, A. J.;
PONTES, D. S. L.;
PONTES, F. M.
Investigation of defects dependence of local piezoelectric response on Fe, La-modified (Pb,Sr)TiO3 thin films: A piezoresponse force microscopy study.
Materials Chemistry and Physics,
v. 214,
p. 180-184,
AUG 1 2018.
Web of Science Citations: 0.
LOPES, L. F.;
PONTES, F. M.;
GARCIA, L. O.;
PONTES, D. S. L.;
PADOVANI, D.;
CHIQUITO, A. J.;
TEIXEIRA, S. R.;
COLMENARES, Y. N.;
MASTELARO, V. R.;
LONGO, E.
Silver-controlled evolution of morphological, structural, and optical properties of three-dimensional hierarchical WO3 structures synthesized from hydrothermal method.
Journal of Alloys and Compounds,
v. 736,
p. 143-151,
MAR 5 2018.
Web of Science Citations: 5.
CAPELI, R. A.;
PONTES, F. M.;
PONTES, D. S. L.;
CHIQUITO, A. J.;
BASTOS, W. B.;
PEREIRA-DA-SILVA, MARCELO A.;
LONGO, E.
Nanoscale investigation of ferroelectric and piezoelectric properties in (Pb,Ca)TiO3 thin films grown on LaNiO3/LaAlO3(100) and Pt/Si(111) using piezoresponse force microscopy.
Materials Letters,
v. 196,
p. 64-68,
JUN 1 2017.
Web of Science Citations: 1.
PONTES, D. S. L.;
BASTOS, W. B.;
CHIQUITO, A. J.;
LONGO, E.;
PONTES, F. M.
Combined theoretical and nanoscale experimental study of Pb(Ca,Ba) TiO3, Pb(Sr,Ba)TiO3, and Pb(Sr,Ca)TiO3 complex perovskite structures: An investigation of the ferroelectric and electronic properties.
Journal of Alloys and Compounds,
v. 702,
p. 327-337,
APR 25 2017.
Web of Science Citations: 1.
PONTES, F. M.;
PONTES, D. S. L.;
CHIQUITO, A. J.;
PEREIRA-DA-SILVA, MARCELO A.;
LONGO, E.
Effect of Fe-doping on the structural, microstructural, optical, and ferroeletric properties of Pb1/2Sr1/2Ti1-xFexO3 oxide prepared by spin coating technique.
Materials Letters,
v. 138,
p. 179-183,
JAN 1 2015.
Web of Science Citations: 6.
PONTES, D. S. L.;
CHIQUITO, A. J.;
PONTES, F. M.;
LONGO, E.
Structural, dielectric, ferroelectric and optical properties of PBCT, PBST and PCST complex thin films on LaNiO3 metallic conductive oxide layer coated Si substrates by the CSD technique.
Journal of Alloys and Compounds,
v. 609,
p. 33-39,
OCT 5 2014.
Web of Science Citations: 6.