Research output: Contribution to journal › Article › peer-review
Gd-doped SrTi0.5Fe0.5O3–δ mixed ionic-electronic conductors : structural, thermal, and electrical properties. / Murashkina, A. A.; Pikalova, E. Yu; Medvedev, D. A.
In: Ionics, Vol. 23, No. 9, 01.09.2017, p. 2351-2357.Research output: Contribution to journal › Article › peer-review
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TY - JOUR
T1 - Gd-doped SrTi0.5Fe0.5O3–δ mixed ionic-electronic conductors
T2 - structural, thermal, and electrical properties
AU - Murashkina, A. A.
AU - Pikalova, E. Yu
AU - Medvedev, D. A.
PY - 2017/9/1
Y1 - 2017/9/1
N2 - The effect of Sr by Gd substitution on the structural, thermomechanical, electrical, and electrochemical properties of SrTi0.5Fe0.5O3–δ was investigated in the present work. The powders were synthesized by a solid-state reaction method at 1150 °C with following sintering of the ceramic samples at 1350 °C. The unit cell parameters of the sintered Sr1–xGdxTi0.5Fe0.5O3–δ (x = 0–0.4) ceramics were found to decrease with a gradual increase in Gd content, and a change in the crystal symmetry from cubic to tetragonal at x ≥ 0.1 was observed. It was found that the Gd doping enhanced the stability of the ceramic samples in a reducing atmosphere and reduced the thermal expansion coefficient value. Gd doping in the amount of 5 mol% can be used for long-term stabilization of the SrTi0.5Fe0.5O3–δ material’s conductivity in reducing atmospheres with no significant alteration to the transport properties and oxygen permeability.
AB - The effect of Sr by Gd substitution on the structural, thermomechanical, electrical, and electrochemical properties of SrTi0.5Fe0.5O3–δ was investigated in the present work. The powders were synthesized by a solid-state reaction method at 1150 °C with following sintering of the ceramic samples at 1350 °C. The unit cell parameters of the sintered Sr1–xGdxTi0.5Fe0.5O3–δ (x = 0–0.4) ceramics were found to decrease with a gradual increase in Gd content, and a change in the crystal symmetry from cubic to tetragonal at x ≥ 0.1 was observed. It was found that the Gd doping enhanced the stability of the ceramic samples in a reducing atmosphere and reduced the thermal expansion coefficient value. Gd doping in the amount of 5 mol% can be used for long-term stabilization of the SrTi0.5Fe0.5O3–δ material’s conductivity in reducing atmospheres with no significant alteration to the transport properties and oxygen permeability.
KW - Ionic conductivity
KW - MIECs
KW - Oxygen permeability
KW - SrTiO
KW - TEC
UR - http://www.scopus.com/inward/record.url?scp=85016092376&partnerID=8YFLogxK
U2 - 10.1007/s11581-017-2075-0
DO - 10.1007/s11581-017-2075-0
M3 - Article
AN - SCOPUS:85016092376
VL - 23
SP - 2351
EP - 2357
JO - Ionics
JF - Ionics
SN - 0947-7047
IS - 9
ER -
ID: 9706582