Structural refinement, optical and ferroelectric properties of microcrystalline Ba(Zr0.05Ti0.95)O-3 perovskite
Contribuinte(s) |
Universidade Estadual Paulista (UNESP) |
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Data(s) |
03/12/2014
03/12/2014
01/05/2014
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Resumo |
Conselho Nacional de Desenvolvimento Científico e Tecnológico (CNPq) Fundação de Amparo à Pesquisa do Estado de São Paulo (FAPESP) Coordenação de Aperfeiçoamento de Pessoal de Nível Superior (CAPES) Processo FAPESP: 09/50303-4 For this study, a microcrystalline Ba(Zr0.05Ti0.95)O-3 (BZT) powder was prepared by a high energy ball milling method followed by calcination at 1100 degrees C for 4 h. The calcined powder was structurally characterized by X-ray diffraction and Rietveld refinement data, which showed that this material has a perovskite-type tetragonal structure with a space group of (P4mmm). The micro-Raman spectrum revealed local lattice distortions due to distorted octahedral [TiO6] clusters. The temperature and frequency-dependent dielectric study of the BZT ceramic showed normal phase transition behavior. The ferroelectric property was studied by a P-E hysteresis loop. Optical band gap was investigated by ultraviolete-visible (UV-vis) absorption spectroscopy at room temperature. The UV-vis spectrum indicated that the BZT powder has an optical band gap of 3.15 eV. (C) 2014 Elsevier B.V. All rights reserved. |
Formato |
708-715 |
Identificador |
http://dx.doi.org/10.1016/j.cap.2014.02.015 Current Applied Physics. Amsterdam: Elsevier Science Bv, v. 14, n. 5, p. 708-715, 2014. 1567-1739 http://hdl.handle.net/11449/111398 10.1016/j.cap.2014.02.015 WOS:000335909000014 |
Idioma(s) |
eng |
Publicador |
Elsevier B.V. |
Relação |
Current Applied Physics |
Direitos |
closedAccess |
Palavras-Chave | #High energy ball milling #Ferroelectric properties #Raman spectroscopy #Optical band gap #P-E loop |
Tipo |
info:eu-repo/semantics/article |