SYNTHESIS AND STRUCTURAL CHARACTERIZATION OF NANOCRYSTALLINE BATIO3 AT VARIOUS CALCINATION TEMPERATURES

Barium titanate (BaTiO3) powders with particle sizes about 50 nm in diameter were synthesized using a hydrothermal route. The powders were characterized using various experimental techniques such as XRD, TEM and Raman spectroscopy, and they showed a good crystallinity and homogeneity without heat tr...

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Autores principales:	FUENTES,SANDRA, CÉSPEDES,FRANCISCO, MUÑOZ,PAMELA, CHAVEZ,EMIGDIO, PADILLA-CAMPOS,LUIS
Lenguaje:	English
Publicado:	Sociedad Chilena de Química 2013
Materias:	BaTiO3 nanoparticles hydrothermal synthesis Raman spectroscopy X-ray diffraction Transmission electron microscopy theoretical calculations
Acceso en línea:	http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0717-97072013000400038
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spelling	oai:scielo:S0717-970720130004000382014-09-02SYNTHESIS AND STRUCTURAL CHARACTERIZATION OF NANOCRYSTALLINE BATIO3 AT VARIOUS CALCINATION TEMPERATURESFUENTES,SANDRACÉSPEDES,FRANCISCOMUÑOZ,PAMELACHAVEZ,EMIGDIOPADILLA-CAMPOS,LUIS BaTiO3 nanoparticles hydrothermal synthesis Raman spectroscopy X-ray diffraction Transmission electron microscopy theoretical calculations Barium titanate (BaTiO3) powders with particle sizes about 50 nm in diameter were synthesized using a hydrothermal route. The powders were characterized using various experimental techniques such as XRD, TEM and Raman spectroscopy, and they showed a good crystallinity and homogeneity without heat treatments. Also, Raman spectra showed the presence of the tetragonal phase. In addition, various calcination treatments were made to BaTiO3 powders with the purpose to improve their ferroelectric properties. In general, calcination treatments improved the crystallinity and homogeneity of the samples considerably but did not modify the internal structure of the BaTiO3, which was observed in the Raman spectra. On the other hand, from theoretical calculations were established that the cubic phase should be better dielectric in comparison with the tetragonal phase, but this latter would have better optical properties. However, experimental evidences are indicative that the cubic phase would predominate in the synthesis of the compound.info:eu-repo/semantics/openAccessSociedad Chilena de QuímicaJournal of the Chilean Chemical Society v.58 n.4 20132013-12-01text/htmlhttp://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0717-97072013000400038en10.4067/S0717-97072013000400038
institution	Scielo Chile
collection	Scielo Chile
language	English
topic	BaTiO3 nanoparticles hydrothermal synthesis Raman spectroscopy X-ray diffraction Transmission electron microscopy theoretical calculations
spellingShingle	BaTiO3 nanoparticles hydrothermal synthesis Raman spectroscopy X-ray diffraction Transmission electron microscopy theoretical calculations FUENTES,SANDRA CÉSPEDES,FRANCISCO MUÑOZ,PAMELA CHAVEZ,EMIGDIO PADILLA-CAMPOS,LUIS SYNTHESIS AND STRUCTURAL CHARACTERIZATION OF NANOCRYSTALLINE BATIO3 AT VARIOUS CALCINATION TEMPERATURES
description	Barium titanate (BaTiO3) powders with particle sizes about 50 nm in diameter were synthesized using a hydrothermal route. The powders were characterized using various experimental techniques such as XRD, TEM and Raman spectroscopy, and they showed a good crystallinity and homogeneity without heat treatments. Also, Raman spectra showed the presence of the tetragonal phase. In addition, various calcination treatments were made to BaTiO3 powders with the purpose to improve their ferroelectric properties. In general, calcination treatments improved the crystallinity and homogeneity of the samples considerably but did not modify the internal structure of the BaTiO3, which was observed in the Raman spectra. On the other hand, from theoretical calculations were established that the cubic phase should be better dielectric in comparison with the tetragonal phase, but this latter would have better optical properties. However, experimental evidences are indicative that the cubic phase would predominate in the synthesis of the compound.
author	FUENTES,SANDRA CÉSPEDES,FRANCISCO MUÑOZ,PAMELA CHAVEZ,EMIGDIO PADILLA-CAMPOS,LUIS
author_facet	FUENTES,SANDRA CÉSPEDES,FRANCISCO MUÑOZ,PAMELA CHAVEZ,EMIGDIO PADILLA-CAMPOS,LUIS
author_sort	FUENTES,SANDRA
title	SYNTHESIS AND STRUCTURAL CHARACTERIZATION OF NANOCRYSTALLINE BATIO3 AT VARIOUS CALCINATION TEMPERATURES
title_short	SYNTHESIS AND STRUCTURAL CHARACTERIZATION OF NANOCRYSTALLINE BATIO3 AT VARIOUS CALCINATION TEMPERATURES
title_full	SYNTHESIS AND STRUCTURAL CHARACTERIZATION OF NANOCRYSTALLINE BATIO3 AT VARIOUS CALCINATION TEMPERATURES
title_fullStr	SYNTHESIS AND STRUCTURAL CHARACTERIZATION OF NANOCRYSTALLINE BATIO3 AT VARIOUS CALCINATION TEMPERATURES
title_full_unstemmed	SYNTHESIS AND STRUCTURAL CHARACTERIZATION OF NANOCRYSTALLINE BATIO3 AT VARIOUS CALCINATION TEMPERATURES
title_sort	synthesis and structural characterization of nanocrystalline batio3 at various calcination temperatures
publisher	Sociedad Chilena de Química
publishDate	2013
url	http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0717-97072013000400038
work_keys_str_mv	AT fuentessandra synthesisandstructuralcharacterizationofnanocrystallinebatio3atvariouscalcinationtemperatures AT cespedesfrancisco synthesisandstructuralcharacterizationofnanocrystallinebatio3atvariouscalcinationtemperatures AT munozpamela synthesisandstructuralcharacterizationofnanocrystallinebatio3atvariouscalcinationtemperatures AT chavezemigdio synthesisandstructuralcharacterizationofnanocrystallinebatio3atvariouscalcinationtemperatures AT padillacamposluis synthesisandstructuralcharacterizationofnanocrystallinebatio3atvariouscalcinationtemperatures
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SYNTHESIS AND STRUCTURAL CHARACTERIZATION OF NANOCRYSTALLINE BATIO3 AT VARIOUS CALCINATION TEMPERATURES

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