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Multifunctional Ferroelectric Materials: Studies of Optical, Electrical and Photoluminescent Properties.

Grant number: 11/20536-7
Support Opportunities:Scholarships in Brazil - Post-Doctoral
Effective date (Start): March 01, 2012
Effective date (End): February 28, 2014
Field of knowledge:Engineering - Materials and Metallurgical Engineering - Nonmetallic Materials
Principal Investigator:Elson Longo da Silva
Grantee:Debora da Silva Lima Pontes
Host Institution: Centro de Ciências Exatas e de Tecnologia (CCET). Universidade Federal de São Carlos (UFSCAR). São Carlos , SP, Brazil
Associated research grant:08/57872-1 - National Institute for Materials Science in Nanotechnology, AP.TEM


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 (14)
(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)
NOVA, C. V.; REIS, K. A.; PINHEIRO, A. L.; DALMASCHIO, C. J.; CHIQUITO, A. J.; TEODORO, M. D.; RODRIGUES, A. D.; LONGO, E.; PONTES, F. M.. Synthesis, characterization, photocatalytic, and antimicrobial activity of ZrO2 nanoparticles and Ag@ZrO2 nanocomposite prepared by the advanced oxidative process/hydrothermal route. Journal of Sol-Gel Science and Technology, v. 98, n. 1, . (13/07296-2, 12/14106-2, 11/20536-7)
PADOVINI, D. S. S.; PONTES, D. S. L.; DALMASCHIO, C. J.; PONTES, F. M.; LONGO, E.. Facile synthesis and characterization of ZrO2 nanoparticles prepared by the AOP/hydrothermal route. RSC ADVANCES, v. 4, n. 73, p. 38484-38490, . (13/07296-2, 12/14106-2, 11/20536-7)
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, . (11/20536-7, 13/07296-2, 12/14106-2)
PERALTA, LAURA CATALI FERREIRA; ALMEIDA, NARA LIGIA MARTINS; PONTES, FENELON MARTINHO LIMA; RINALDO, DANIEL; CARNEIRO, CAMILA ALVES; NEPPELENBROEK, KARIN HERMANA; LARA, VANESSA SOARES; PORTO, VINICIUS CARVALHO. Silver nanoparticles in denture adhesive: An antimicrobial approach against Candida albicans. Journal of Dentistry, v. 131, p. 11-pg., . (11/20536-7)
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, . (08/57872-1, 12/14106-2, 11/20536-7, 13/07296-2)
PONTES, D. S. L.; PONTES, F. M.; CHIQUITO, A. J.; LONGO, E.. Investigation of the structural, optical and dielectric properties of highly (100)-oriented (Pb0.60Ca0.20Sr0.20)TiO3 thin films on LaNiO3 bottom electrode. MATERIALS SCIENCE AND ENGINEERING B-ADVANCED FUNCTIONAL SOLID-STATE MATERIALS, v. 185, p. 123-128, . (11/20536-7)
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, . (11/20536-7, 17/10819-8, 13/07296-2, 12/14106-2)
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, . (13/07296-2, 12/14106-2, 11/20536-7, 17/10819-8)
CAPELI, R. A.; BELMONTE, T.; CAIERAO, J.; DALMASCHIO, C. J.; TEIXEIRA, S. R.; MASTELARO, V. R.; CHIQUITO, A. J.; TEODORO, M. D.; DOMENEGUETI, J. F. M.; LONGO, E.; et al. Effect of hydrothermal temperature on the antibacterial and photocatalytic activity of WO3 decorated with silver nanoparticles. Journal of Sol-Gel Science and Technology, v. 97, n. 1, . (12/14106-2, 13/07296-2, 11/20536-7)
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, . (13/07296-2, 12/14106-2, 11/20536-7)
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, . (13/07296-2, 12/14106-2, 11/20536-7)
PONTES, D. S. L.; PONTES, F. M.; CAPELI, R. A.; GARZIM, M. L.; CHIQUITO, A. J.; LONGO, E.. Structural, ferroelectric, and optical properties of Pb0.60Ca0.20Sr0.20TiO3, Pb0.50Ca0.25Sr0.25TiO3 and Pb0.40Ca0.30Sr0.30TiO3 thin films prepared by the chemical solution deposition technique. CERAMICS INTERNATIONAL, v. 40, n. 8, p. 8-pg., . (13/07296-2, 11/20536-7)

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