Electrical conductivity of 5 mol.% Yb2O3 and 5 mol.% Gd2O3 co-doped Sm2Zr2O7

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

doi:10.1016/j.matlet.2010.10.032

Electrical conductivity of 5 mol.% Yb₂O₃ and 5 mol.% Gd₂O₃ co-doped Sm₂Zr₂O₇

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

^*Corresponding author for this work

Harbin Institute of Technology

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

14 Citations (Scopus)

Abstract

Sm₂Zr₂O₇ co-doped with and without 5 mol.% Yb₂O₃ and 5 mol.% Gd₂O₃ were prepared by a pressurelesssintering method at 1973 K for 10 h in air. The relative density, structure and electrical conductivity were investigated by the Archimedes method, X-ray diffraction, scanning electron microscopy and impedance spectra measurements. Both Sm₂Zr₂O₇ and (Sm_0.9Gd_0.05Yb0.05)₂Zr₂O ₇ ceramics exhibit a single phase of pyrochlore-type structure. The grain conductivity, grain-boundary conductivity and total conductivity obey the Arrhenius relation, respectively, and gradually increase with increasing temperature from 723 to 1173 K. (Sm_0.9Gd_0.05Yb _0.05)₂Zr₂O₇ ceramic is the oxide-ion conductor in an oxygen partial pressure range of 1.0×10^-4 to 1.0 atm at all test temperature levels. The grain conductivity, grain-boundary conductivity and total conductivity of (Sm_0.9Gd_0.05Yb _0.05)₂Zr₂O₇ with dual Yb ³⁺ + Gd³⁺ doping are higher than those of undoped Sm ₂Zr₂O₇ at identical temperature levels.

Original language	English
Pages (from-to)	385-387
Number of pages	3
Journal	Materials Letters
Volume	65
Issue number	2
DOIs	https://doi.org/10.1016/j.matlet.2010.10.032
Publication status	Published - 31 Jan 2011
Externally published	Yes

Keywords

Ceramics
Co-doping
Electrical properties

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10.1016/j.matlet.2010.10.032

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@article{e0871449e01247b3b030bf24eebb73ab,

title = "Electrical conductivity of 5 mol.\% Yb2O3 and 5 mol.\% Gd2O3 co-doped Sm2Zr2O7",

abstract = "Sm2Zr2O7 co-doped with and without 5 mol.\% Yb2O3 and 5 mol.\% Gd2O3 were prepared by a pressurelesssintering method at 1973 K for 10 h in air. The relative density, structure and electrical conductivity were investigated by the Archimedes method, X-ray diffraction, scanning electron microscopy and impedance spectra measurements. Both Sm2Zr2O7 and (Sm0.9Gd0.05Yb0.05)2Zr2O 7 ceramics exhibit a single phase of pyrochlore-type structure. The grain conductivity, grain-boundary conductivity and total conductivity obey the Arrhenius relation, respectively, and gradually increase with increasing temperature from 723 to 1173 K. (Sm0.9Gd0.05Yb 0.05)2Zr2O7 ceramic is the oxide-ion conductor in an oxygen partial pressure range of 1.0×10-4 to 1.0 atm at all test temperature levels. The grain conductivity, grain-boundary conductivity and total conductivity of (Sm0.9Gd0.05Yb 0.05)2Zr2O7 with dual Yb 3+ + Gd3+ doping are higher than those of undoped Sm 2Zr2O7 at identical temperature levels.",

keywords = "Ceramics, Co-doping, Electrical properties",

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

year = "2011",

month = jan,

day = "31",

doi = "10.1016/j.matlet.2010.10.032",

language = "English",

volume = "65",

pages = "385--387",

journal = "Materials Letters",

issn = "0167-577X",

publisher = "Elsevier B.V.",

number = "2",

}

TY - JOUR

T1 - Electrical conductivity of 5 mol.% Yb2O3 and 5 mol.% Gd2O3 co-doped Sm2Zr2O7

AU - Liu, Zhan Guo

AU - Ouyang, Jia Hu

AU - Sun, Ke Ning

AU - Zhou, Yu

PY - 2011/1/31

Y1 - 2011/1/31

N2 - Sm2Zr2O7 co-doped with and without 5 mol.% Yb2O3 and 5 mol.% Gd2O3 were prepared by a pressurelesssintering method at 1973 K for 10 h in air. The relative density, structure and electrical conductivity were investigated by the Archimedes method, X-ray diffraction, scanning electron microscopy and impedance spectra measurements. Both Sm2Zr2O7 and (Sm0.9Gd0.05Yb0.05)2Zr2O 7 ceramics exhibit a single phase of pyrochlore-type structure. The grain conductivity, grain-boundary conductivity and total conductivity obey the Arrhenius relation, respectively, and gradually increase with increasing temperature from 723 to 1173 K. (Sm0.9Gd0.05Yb 0.05)2Zr2O7 ceramic is the oxide-ion conductor in an oxygen partial pressure range of 1.0×10-4 to 1.0 atm at all test temperature levels. The grain conductivity, grain-boundary conductivity and total conductivity of (Sm0.9Gd0.05Yb 0.05)2Zr2O7 with dual Yb 3+ + Gd3+ doping are higher than those of undoped Sm 2Zr2O7 at identical temperature levels.

AB - Sm2Zr2O7 co-doped with and without 5 mol.% Yb2O3 and 5 mol.% Gd2O3 were prepared by a pressurelesssintering method at 1973 K for 10 h in air. The relative density, structure and electrical conductivity were investigated by the Archimedes method, X-ray diffraction, scanning electron microscopy and impedance spectra measurements. Both Sm2Zr2O7 and (Sm0.9Gd0.05Yb0.05)2Zr2O 7 ceramics exhibit a single phase of pyrochlore-type structure. The grain conductivity, grain-boundary conductivity and total conductivity obey the Arrhenius relation, respectively, and gradually increase with increasing temperature from 723 to 1173 K. (Sm0.9Gd0.05Yb 0.05)2Zr2O7 ceramic is the oxide-ion conductor in an oxygen partial pressure range of 1.0×10-4 to 1.0 atm at all test temperature levels. The grain conductivity, grain-boundary conductivity and total conductivity of (Sm0.9Gd0.05Yb 0.05)2Zr2O7 with dual Yb 3+ + Gd3+ doping are higher than those of undoped Sm 2Zr2O7 at identical temperature levels.

KW - Ceramics

KW - Co-doping

KW - Electrical properties

UR - https://www.scopus.com/pages/publications/78049495892

U2 - 10.1016/j.matlet.2010.10.032

DO - 10.1016/j.matlet.2010.10.032

M3 - Article

AN - SCOPUS:78049495892

SN - 0167-577X

VL - 65

SP - 385

EP - 387

JO - Materials Letters

JF - Materials Letters

IS - 2

ER -

Electrical conductivity of 5 mol.% Yb₂O₃ and 5 mol.% Gd₂O₃ co-doped Sm₂Zr₂O₇

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