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|Type:||Artigo de periódico|
|Title:||Temperature Dependence Of Dipolar Modes In Ferroelectric Batio3 By Infrared Studies|
|Abstract:||Temperature dependence of A1 modes in tetragonal phase and F1u modes in cubic phase of BaTiO3 has been studied by ir (infrared) reflectivity measurements. The spectra have been analyzed using Kramers-Kronig analysis and the coupled-mode classical oscillator fit. The results are in excellent agreement with each other and are compatible with the earlier Raman measurements. Such a compatibility indeed favors the conclusion of Pinczuk et al. with regard to the interpretation of the broad peaks at 270 and 520 cm-1 in the Raman spectrum to be of first order. A critical analysis of the earlier work in BaTiO3 is presented. © 1980 The American Physical Society.|
|Appears in Collections:||Unicamp - Artigos e Outros Documentos|
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