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2016 | 130 | 4 | 862-865
Article title

Comparative Study of Sb₂O₃ (Sb₂O₅) and Ta₂O₅ Doping Effects with TeO₂ on Electrical Properties of δ-Bi₂O₃

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EN
Abstracts
EN
In this study, Sb₂O₃ (Sb₂O₅) and Ta₂O₅ are used as co-dopants with TeO₂ to stabilize the delta phase of bismuth oxide (δ -Bi₂O₃). Some compositions with formula (1-x) BiO_{1.5}-(x/4) Sb₂Te₂O₉ and (1-x) BiO_{1.5}-(x/4) Ta₂Te₂O₉ (x=0.1, 0.2, 0.3, 0.6, and 0.9) have been synthesized by solid state reaction at 850°C and characterized by powder X-ray diffraction. The Bi_{0.9}Sb_{0.05}Te_{0.05}O_{1.575}, Bi_{0.9}Ta_{0.05}Te_{0.05}O_{1.575} and Bi_{0.8}Ta_{0.1}Te_{0.1}O_{1.65} retain a cubic fluorite structure of δ -Bi₂O₃ phase. The electric properties were studied by impedance spectroscopy. All samples were evaluated by calculating conductivities and activation energies. Various impedance model including constant phase element and the Warburg impedances have been used to interpret the Nyquist representations of electrical analyses.
Keywords
EN
Contributors
author
  • Laboratoire de Chimie Analytique et Physico-Chimie des Matériaux (LCAPM), Faculté des Sciences Ben M'Sik, Université Hassan II, Casablanca, Maroc
author
  • Laboratoire de Chimie Analytique et Physico-Chimie des Matériaux (LCAPM), Faculté des Sciences Ben M'Sik, Université Hassan II, Casablanca, Maroc
author
  • Avenue de l'Université Toulon Var B.P. 20132, Laboratoire IM2NP, Bâtiment R83957, La garde CEDEX, Toulon, France
author
  • Laboratoire de Chimie Analytique et Physico-Chimie des Matériaux (LCAPM), Faculté des Sciences Ben M'Sik, Université Hassan II, Casablanca, Maroc
author
  • CIC Energigune, Parque Tecnológico, C/Albert Einstein, 48, 01510 Miñano (Álava), Spain
  • Laboratoire de Chimie Analytique et Physico-Chimie des Matériaux (LCAPM), Faculté des Sciences Ben M'Sik, Université Hassan II, Casablanca, Maroc
author
  • Laboratoire de Chimie Analytique et Physico-Chimie des Matériaux (LCAPM), Faculté des Sciences Ben M'Sik, Université Hassan II, Casablanca, Maroc
author
  • Laboratoire de Chimie Analytique et Physico-Chimie des Matériaux (LCAPM), Faculté des Sciences Ben M'Sik, Université Hassan II, Casablanca, Maroc
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Document Type
Publication order reference
Identifiers
YADDA identifier
bwmeta1.element.bwnjournal-article-appv130n412kz
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