Structural refinement, optical and ferroelectric properties of microcrystalline Ba(Zr0.05Ti0.95)O-3 perovskite

Autor(es)

Badapanda, T. ^[1] ; Sarangi, S. ^[2] ; Behera, B. ^[2] ; Sahoo, P. K. ^[3] ; Anwar, S. ^[4] ; Sinha, T. P. ^[5] ; Luz, Jr., G. E. ^[6] ; Longo, E. ^[7] ; Cavalcante, L. S. ^[6]

Afiliação do(s) autor(es)

^[1] CV Raman Coll Engn, Dept Phys, Bhubaneswar 752054, Odisha - India

^[2] Sambalpur Univ, Sch Phys, Sambalpur 768019, Odisha - India

^[3] NISER, Sch Phys Sci, Bhubaneswar, Odisha - India

^[4] Inst Minerals & Mat Technol, Bhubaneswar 751013, Odisha - India

^[5] Bose Inst, Dept Phys, Kolkata 700009, W Bengal - India

^[6] Univ Estadual Piaui, CCN DQ GERATEC, BR-64002150 Teresina, PI - Brazil

^[7] Univ Estadual Paulista CDMF, BR-14801907 Araraquara, SP - Brazil

• Tipo de documento: Artigo Científico
• Fonte: CURRENT APPLIED PHYSICS; v. 14, n. 5, p. 708-715, MAY 2014.
• Citações Web of Science: 24

Resumo

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. (AU)

• Processo FAPESP: 09/50303-4 - Propriedades ópticas e fotocatalíticas do ZnMoO4 e ZnWO4
• Beneficiário: Laécio Santos Cavalcante
• Modalidade de apoio: Bolsas no Brasil - Pós-Doutorado