Crystal structure and electrical conductivity of cubic fluorite-based (YO 1.5) x (WO 3) 0.15(BiO 1.5) 0.85- x (0≤x≤0.4) solid solutions

Cheng Yen Hsieh, Kuan-Zong Fung

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9 Citations (Scopus)

Abstract

(WO 3) 0.15(BiO 1.5) 0.85 exhibits a tetragonal structure derived from the fluorite subcell. The electrical conductivity of (WO 3) 0.15(BiO 1.5) 0.85 is lower than that of Y 2O 3-doped Bi 2O 3. The structure and electrical conductivity of samples formulated as (YO 1.5) x (WO 3) 0.15(BiO 1.5) 0.85- x (x∈=∈0.1, 0.2, 0.3, and 0.4) were investigated. The as-sintered (YO 1.5) 0.1(WO 3) 0.15(BiO 1.5) 0.75 exhibited a single cubic structure that is isostructural with δ-Bi 2O 3. For x∈=∈0.2, 0.3, and 0.4, the as-sintered samples consisted of a cubic fluorite structure and rhombohedral Y 6WO 12. After heat treatment at 600 °C for 200 h, the cubic structures are stable for x∈=∈0.1, 0.3, and 0.4. A transformation from cubic to rhombohedral phase after heat treatment at 600 °C for 200 h was observed in the sample originally formulated as (YO 1.5) 0.2(WO 3) 0.15(BiO 1.5) 0.65.

Original languageEnglish
Pages (from-to)951-957
Number of pages7
JournalJournal of Solid State Electrochemistry
Volume13
Issue number6
DOIs
Publication statusPublished - 2009 Jun 1

All Science Journal Classification (ASJC) codes

  • Materials Science(all)
  • Condensed Matter Physics
  • Electrochemistry
  • Electrical and Electronic Engineering

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