Structure and transport properties of zirconia crystals co-doped by scandia, ceria and yttria

被引：19

作者：

Agarkov, D. A. ^{[1
,2
]}

Borik, M. A. ^{[3
]}

Bredikhin, S., I ^{[1
,2
]}

Burmistrov, I. N. ^{[1
,2
]}

Eliseeva, G. M. ^{[1
]}

Kolotygin, V. A. ^{[1
]}

Kulebyakin, A., V ^{[3
]}

Kuritsyna, I. E. ^{[1
]}

Lomonova, E. E. ^{[3
]}

Milovich, F. O. ^{[4
]}

Myzina, V. A. ^{[3
]}

Ryabochkina, P. A. ^{[5
]}

Tabachkova, N. Yu ^{[4
]}

Volkova, T. V. ^{[5
]}

机构：

[1] RAS, Inst Solid State Phys, 2 Academician Osipyan Str, Chernogolovka 142432, Moscow Distr, Russia

[2] Moscow Inst Phys & Technol, Inst Sky Lane 9, Dolgoprudnyi 141700, Moscow District, Russia

[3] Russian Acad Sci, AM Prokhorov Gen Phys Inst, Vavilov Str 38, Moscow 119991, Russia

[4] Natl Univ Sci & Technol, MISIS, Leninskiy Prospekt 4, Moscow 119049, Russia

[5] Ogarev Mordovia State Univ, Saransk 430005, Russia

来源：

JOURNAL OF MATERIOMICS | 2019年 / 5卷 / 02期

基金：

俄罗斯科学基金会;

关键词：

Single crystals; Solid oxide fuel cell; Solid solutions; Ionic conducting materials; ZrO2-Sc2O3-CeO2-Y2O3; OXIDE FUEL-CELLS; STABILIZED ZIRCONIA; IONIC-CONDUCTIVITY; ELECTRICAL-CONDUCTIVITY; LOCAL ENVIRONMENT; ELECTROLYTE; ANODES; SC2O3;

D O I：

10.1016/j.jmat.2019.02.004

中图分类号：

O64 [物理化学（理论化学）、化学物理学];

学科分类号：

070304 ; 081704 ;

摘要：

This work is a study of the effect of co-doping (ZrO2)(0.9)(Sc2O3)(0.1) solid solution with yttria and/or ceria on the phase composition, local structure and transport properties of the crystals. The solid solution crystals were grown using directional melt crystallization in cold crucible. We show that ceria co-doping of the crystals does not stabilize the high-temperature cubic phase in the entire crystal bulk, unlike yttria codoping. Ceria co-doping of the (ZrO2)(0.9)(Sc2O3)(0.1) crystals increases their conductivity, whereas the addition of 1 mol.% yttria tangibly reduces the conductivity. Equimolar co-doping of the (ZrO2)(0.9)(Sc2O3)(0.1) crystals with ceria and yttria changes the conductivity but slightly. Optical spectroscopy of the local structure of the crystals identified different types of optical centers. We found that the fraction of the trivalent cations having a vacancy in the first coordination sphere in the ceria co-doped crystals is smaller compared with that in the yttria co-doped crystals. (C) 2019 The Chinese Ceramic Society. Production and hosting by Elsevier B.V.

引用

页码：273 / 279

页数：7

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