Preparation, structure and electrical conductivity of pyrochlore-type Gd1-xEu2xSm1-xZr2O7 ceramics with a constant lattice parameter

Zhan Guo Liu; Jia Hu Ouyang; Ke Ning Sun; Yu Zhou; Jun Xiang

doi:10.1016/j.electacta.2011.06.001

Preparation, structure and electrical conductivity of pyrochlore-type Gd_1-xEu_2xSm_1-xZr₂O₇ ceramics with a constant lattice parameter

Zhan Guo Liu, Jia Hu Ouyang^*, Ke Ning Sun, Yu Zhou, Jun Xiang

^*Corresponding author for this work

Harbin Institute of Technology

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

11 Citations (Scopus)

Abstract

A novel series of Gd_1-xEu_2xSm_1-xZr ₂O₇ (x = 0, 1/3, 1/2, 2/3, 1) ceramics with a constant lattice parameter are prepared by solid-state reaction, and are then evaluated as possible solid electrolytes. The microstructure and electrical properties of Gd_1-xEu_2xSm_1-xZr₂O₇ ceramics have been investigated by means of X-ray diffraction (XRD), scanning electron microscopy (SEM) and complex impedance analysis. Gd _1-xEu_2xSm_1-xZr₂O₇ ceramics exhibit a single phase of pyrochlore-type structure. The total conductivity of Gd_1-xEu_2xSm_1-xZr ₂O₇ ceramics obeys the Arrhenius relation, and gradually increases with increasing temperature from 723 to 1173 K. At 973-1173 K, the composition has little effect on electrical conductivity of Gd _1-xEu_2xSm_1-xZr₂O₇ ceramics. Gd_1-xEu_2xSm_1-xZr₂O ₇ ceramics are oxide-ion conductors in the oxygen partial pressure range of 1.0 × 10^-4 to 1.0 atm at all test temperature levels. The maximum total conductivity of Gd_1-xEu_2xSm _1-xZr₂O₇ ceramics is about 1.01 × 10 ^-2 S cm^-1 at 1173 K in air.

Original language	English
Pages (from-to)	7045-7050
Number of pages	6
Journal	Electrochimica Acta
Volume	56
Issue number	20
DOIs	https://doi.org/10.1016/j.electacta.2011.06.001
Publication status	Published - 1 Aug 2011
Externally published	Yes

Keywords

Electrical conductivity
Impedance spectroscopy
Rare-earth zirconate
Solid electrolyte

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10.1016/j.electacta.2011.06.001

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title = "Preparation, structure and electrical conductivity of pyrochlore-type Gd1-xEu2xSm1-xZr2O7 ceramics with a constant lattice parameter",

abstract = "A novel series of Gd1-xEu2xSm1-xZr 2O7 (x = 0, 1/3, 1/2, 2/3, 1) ceramics with a constant lattice parameter are prepared by solid-state reaction, and are then evaluated as possible solid electrolytes. The microstructure and electrical properties of Gd1-xEu2xSm1-xZr2O7 ceramics have been investigated by means of X-ray diffraction (XRD), scanning electron microscopy (SEM) and complex impedance analysis. Gd 1-xEu2xSm1-xZr2O7 ceramics exhibit a single phase of pyrochlore-type structure. The total conductivity of Gd1-xEu2xSm1-xZr 2O7 ceramics obeys the Arrhenius relation, and gradually increases with increasing temperature from 723 to 1173 K. At 973-1173 K, the composition has little effect on electrical conductivity of Gd 1-xEu2xSm1-xZr2O7 ceramics. Gd1-xEu2xSm1-xZr2O 7 ceramics are oxide-ion conductors in the oxygen partial pressure range of 1.0 × 10-4 to 1.0 atm at all test temperature levels. The maximum total conductivity of Gd1-xEu2xSm 1-xZr2O7 ceramics is about 1.01 × 10 -2 S cm-1 at 1173 K in air.",

keywords = "Electrical conductivity, Impedance spectroscopy, Rare-earth zirconate, Solid electrolyte",

author = "Liu, {Zhan Guo} and Ouyang, {Jia Hu} and Sun, {Ke Ning} and Yu Zhou and Jun Xiang",

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T1 - Preparation, structure and electrical conductivity of pyrochlore-type Gd1-xEu2xSm1-xZr2O7 ceramics with a constant lattice parameter

AU - Liu, Zhan Guo

AU - Ouyang, Jia Hu

AU - Sun, Ke Ning

AU - Zhou, Yu

AU - Xiang, Jun

PY - 2011/8/1

Y1 - 2011/8/1

N2 - A novel series of Gd1-xEu2xSm1-xZr 2O7 (x = 0, 1/3, 1/2, 2/3, 1) ceramics with a constant lattice parameter are prepared by solid-state reaction, and are then evaluated as possible solid electrolytes. The microstructure and electrical properties of Gd1-xEu2xSm1-xZr2O7 ceramics have been investigated by means of X-ray diffraction (XRD), scanning electron microscopy (SEM) and complex impedance analysis. Gd 1-xEu2xSm1-xZr2O7 ceramics exhibit a single phase of pyrochlore-type structure. The total conductivity of Gd1-xEu2xSm1-xZr 2O7 ceramics obeys the Arrhenius relation, and gradually increases with increasing temperature from 723 to 1173 K. At 973-1173 K, the composition has little effect on electrical conductivity of Gd 1-xEu2xSm1-xZr2O7 ceramics. Gd1-xEu2xSm1-xZr2O 7 ceramics are oxide-ion conductors in the oxygen partial pressure range of 1.0 × 10-4 to 1.0 atm at all test temperature levels. The maximum total conductivity of Gd1-xEu2xSm 1-xZr2O7 ceramics is about 1.01 × 10 -2 S cm-1 at 1173 K in air.

AB - A novel series of Gd1-xEu2xSm1-xZr 2O7 (x = 0, 1/3, 1/2, 2/3, 1) ceramics with a constant lattice parameter are prepared by solid-state reaction, and are then evaluated as possible solid electrolytes. The microstructure and electrical properties of Gd1-xEu2xSm1-xZr2O7 ceramics have been investigated by means of X-ray diffraction (XRD), scanning electron microscopy (SEM) and complex impedance analysis. Gd 1-xEu2xSm1-xZr2O7 ceramics exhibit a single phase of pyrochlore-type structure. The total conductivity of Gd1-xEu2xSm1-xZr 2O7 ceramics obeys the Arrhenius relation, and gradually increases with increasing temperature from 723 to 1173 K. At 973-1173 K, the composition has little effect on electrical conductivity of Gd 1-xEu2xSm1-xZr2O7 ceramics. Gd1-xEu2xSm1-xZr2O 7 ceramics are oxide-ion conductors in the oxygen partial pressure range of 1.0 × 10-4 to 1.0 atm at all test temperature levels. The maximum total conductivity of Gd1-xEu2xSm 1-xZr2O7 ceramics is about 1.01 × 10 -2 S cm-1 at 1173 K in air.

KW - Electrical conductivity

KW - Impedance spectroscopy

KW - Rare-earth zirconate

KW - Solid electrolyte

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JO - Electrochimica Acta

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ER -

Preparation, structure and electrical conductivity of pyrochlore-type Gd_1-xEu_2xSm_1-xZr₂O₇ ceramics with a constant lattice parameter

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