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Preparation and characterization of thin films Pb1-xCaxTiO3 - Li+ (PCT-Li+) for application in sensors of de humidity and gas

Grant number: 10/18512-0
Support Opportunities:Scholarships in Brazil - Scientific Initiation
Effective date (Start): February 01, 2011
Effective date (End): December 31, 2013
Field of knowledge:Engineering - Materials and Metallurgical Engineering - Nonmetallic Materials
Principal Investigator:Fenelon Martinho Lima Pontes
Grantee:Regina Aparecida Capeli da Silva
Host Institution: Faculdade de Ciências (FC). Universidade Estadual Paulista (UNESP). Campus de Bauru. Bauru , SP, Brazil


In this project will be prepared samples of the system Pb1-xCaxTiO3 - Li+ (PCT-Li+) with x = 0,10 and 0,50 and Li+ 1 to 5% in mol, using the method of the polymeric precursors to produce ceramic samples and thin films nanostructured and characterize your structural properties, microstructure and electric and sensor response. The structural characterization will be accomplished using the techniques of diffraction of ray-X, spectroscopic Raman and spectroscopic infrared. The thin films will be prepared by the technique "spin-coating" on silicon and MgO (100) substrates. The experimental study will be investigative to verify the responser of the system for the humidity detection and of gases as the oxygen (O2), carbonic gas (CO2) and carbon monoxide (CO). (AU)

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