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

doi:10.1007/s10008-008-0637-9

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

Research output: Contribution to journal › Article › peer-review

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 language	English
Pages (from-to)	951-957
Number of pages	7
Journal	Journal of Solid State Electrochemistry
Volume	13
Issue number	6
DOIs	https://doi.org/10.1007/s10008-008-0637-9
Publication status	Published - 2009 Jun 1

All Science Journal Classification (ASJC) codes

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

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@article{4c271e59161547daa4e2df563b0811ea,

title = "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",

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.",

author = "Hsieh, {Cheng Yen} and Kuan-Zong Fung",

year = "2009",

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doi = "10.1007/s10008-008-0637-9",

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T1 - 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

AU - Hsieh, Cheng Yen

AU - Fung, Kuan-Zong

PY - 2009/6/1

Y1 - 2009/6/1

N2 - (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.

AB - (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.

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