Structural and morphological characterization of Pb1-xBaxTiO3 thin films prepared by chemical route: An investigation of phase transition

Pontes  FM; Galhiane  MS; Santos  LSRissato  RSPontes  DSLLongo  ELeite  ERPizani  PSChiquito  AJMachado  MAC

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Structural and morphological characterization of Pb1-xBaxTiO3 thin films prepared by chemical route: An investigation of phase transition

机译：Structural and morphological characterization of Pb1-xBaxTiO3 thin films prepared by chemical route: An investigation of phase transition

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Detailed room temperature micro-Raman scattering, X-ray diffraction, atomic force microscopy and specular reflectance infrared Fourier transform spectroscopy studies were carried out on soft chemical by processed Pb1-xBaxTiO3 thin films. The micro-Raman spectra pointed the existence of a stable tetragonal ferroelectric phase in the entire composition range (0 < x <= 1). The infrared reflectance spectra showed that the frequency of several peaks decreases as the Ba2+ concentration increases. These features are correlated to a decrease in the tetragonal distortion of the TiO6 octahedra as the Ba2+ concentration increases. Furthermore, as x increases from 0.70 to 1.0, the Raman spectrum shows an evolution towards the well-known Raman spectrum of the tetragonal BaTiO3. Therefore, we demonstrated that the combination of solid solution PbTiO3-BaTiO3 with a grain size in the order of 30-40 nm supports the tetragonal ferroelectric phase at room temperature. (C) 2007 Elsevier B.V. All rights reserved.

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《Materials Chemistry and Physics》 |2008年第3期|312-318|共7页
作者
Pontes FM; Galhiane MS; Santos LSRissato RSPontes DSLLongo ELeite ERPizani PSChiquito AJMachado MAC;
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作者单位

Univ Estadual Paulista, Dept Chem, BR-17033360 Sao Paulo, Brazil;

Univ Estadual Paulista, Inst Chem, BR-14801970 Sao Paulo, Brazil;

Univ Fed Sao Carlos, Dept Chem, LIEC CMDMC, BR-13565905 Sao Carlos, SP, BrazilUniv Fed Sao Carlos, Dept Phys, BR-13565905 Sao Carlos, SP, Brazilediatrics.medsch.ucla.edu;

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收录信息美国《科学引文索引》(SCI);美国《工程索引》(EI);美国《生物学医学文摘》(MEDLINE);
原文格式 PDF
正文语种英语
中图分类工程材料学;
关键词
thin films; chemical synthesis; microstructure; phase transitions; PBTIO3 ULTRAFINE PARTICLES; RAMAN-SPECTRA; SPECTROSCOPY;

Structural and morphological characterization of Pb1-xBaxTiO3 thin films prepared by chemical route: An investigation of phase transition

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