Crystal structure and potential interstitial oxide ion conductivity of LnNbO4 and LnNb0.92 W0.08O4.04 (Ln = La, Pr, Nd)

Cheng Li; Ryan D. Bayliss; Stephen J. Skinner

doi:10.1016/j.ssi.2013.12.023

Crystal structure and potential interstitial oxide ion conductivity of LnNbO₄ and LnNb_0.92 W_0.08O_4.04 (Ln = La, Pr, Nd)

Cheng Li, Ryan D. Bayliss, Stephen J. Skinner

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

40 Scopus citations

Abstract

Single phase LnNbO₄ and LnNb_0.92 W _0.08O_4.04 (Ln = La, Pr and Nd) were prepared via solid state reaction. The crystal structure of the materials has been investigated by X-ray diffraction and Rietveld refinement. PrNb_0.92 W _0.08O_4.04 and NdNb_0.92 W_0.08O _4.04 were found to have the same crystal structure as the parent phases whereas LaNb_0.92 W_0.08O_4.04 has a modulated structure. Electrical conductivity was studied by AC impedance spectroscopy. Substantial improvements in total conductivity were achieved by W doping on the B-site, with LaNb_0.92 W_0.08O_4.04 having the highest overall conductivity of 3.0 × 10^{- 3} Scm ^{- 1} at 800 °C.

Original language	English
Pages (from-to)	530-535
Number of pages	6
Journal	Solid State Ionics
Volume	262
DOIs	https://doi.org/10.1016/j.ssi.2013.12.023
State	Published - Sep 1 2014
Externally published	Yes

Keywords

Impedance spectroscopy
Oxide ion conductor
X-ray diffraction

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title = "Crystal structure and potential interstitial oxide ion conductivity of LnNbO4 and LnNb0.92 W0.08O4.04 (Ln = La, Pr, Nd)",

abstract = "Single phase LnNbO4 and LnNb0.92 W 0.08O4.04 (Ln = La, Pr and Nd) were prepared via solid state reaction. The crystal structure of the materials has been investigated by X-ray diffraction and Rietveld refinement. PrNb0.92 W 0.08O4.04 and NdNb0.92 W0.08O 4.04 were found to have the same crystal structure as the parent phases whereas LaNb0.92 W0.08O4.04 has a modulated structure. Electrical conductivity was studied by AC impedance spectroscopy. Substantial improvements in total conductivity were achieved by W doping on the B-site, with LaNb0.92 W0.08O4.04 having the highest overall conductivity of 3.0 × 10- 3 Scm - 1 at 800 °C.",

keywords = "Impedance spectroscopy, Oxide ion conductor, X-ray diffraction",

author = "Cheng Li and Bayliss, {Ryan D.} and Skinner, {Stephen J.}",

year = "2014",

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T1 - Crystal structure and potential interstitial oxide ion conductivity of LnNbO4 and LnNb0.92 W0.08O4.04 (Ln = La, Pr, Nd)

AU - Li, Cheng

AU - Bayliss, Ryan D.

AU - Skinner, Stephen J.

PY - 2014/9/1

Y1 - 2014/9/1

N2 - Single phase LnNbO4 and LnNb0.92 W 0.08O4.04 (Ln = La, Pr and Nd) were prepared via solid state reaction. The crystal structure of the materials has been investigated by X-ray diffraction and Rietveld refinement. PrNb0.92 W 0.08O4.04 and NdNb0.92 W0.08O 4.04 were found to have the same crystal structure as the parent phases whereas LaNb0.92 W0.08O4.04 has a modulated structure. Electrical conductivity was studied by AC impedance spectroscopy. Substantial improvements in total conductivity were achieved by W doping on the B-site, with LaNb0.92 W0.08O4.04 having the highest overall conductivity of 3.0 × 10- 3 Scm - 1 at 800 °C.

AB - Single phase LnNbO4 and LnNb0.92 W 0.08O4.04 (Ln = La, Pr and Nd) were prepared via solid state reaction. The crystal structure of the materials has been investigated by X-ray diffraction and Rietveld refinement. PrNb0.92 W 0.08O4.04 and NdNb0.92 W0.08O 4.04 were found to have the same crystal structure as the parent phases whereas LaNb0.92 W0.08O4.04 has a modulated structure. Electrical conductivity was studied by AC impedance spectroscopy. Substantial improvements in total conductivity were achieved by W doping on the B-site, with LaNb0.92 W0.08O4.04 having the highest overall conductivity of 3.0 × 10- 3 Scm - 1 at 800 °C.

KW - Impedance spectroscopy

KW - Oxide ion conductor

KW - X-ray diffraction

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U2 - 10.1016/j.ssi.2013.12.023

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M3 - Article

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SN - 0167-2738

VL - 262

SP - 530

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JO - Solid State Ionics

JF - Solid State Ionics

ER -

Crystal structure and potential interstitial oxide ion conductivity of LnNbO₄ and LnNb_0.92 W_0.08O_4.04 (Ln = La, Pr, Nd)

Abstract

Keywords

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