Abstract
Sr0.7La0.3TiO3−α specimens were prepared in reducing atmosphere, and the structural and electrical properties were studied. The lattice parameter of Sr0.7La0.3TiO3−α at room temperature was larger than that expected from Vegard’s law between SrTiO3 and LaTiO3 due to the reductive expansion. The conductivity of this specimen was 100 S cm−1 at 1000°C, pO2 = 10−13 Pa. However, the conductivity was not preserved after an oxidation-reduction cycle. Over pO2 = 102 Pa, the conductivity drastically dropped with increasing pO2. The thermal expansion coefficient of Sr0.7La0.3TiO3−α was 11.8 × 10−6 K−1 in 9% H2/N2 (room temperature – 1000°C). In this Sr0.7La0.3TiO3−α, the chemical expansion on oxidation reached Δl/lo = 0.51%, when changing pO2 from 10−11 Pa to 2 × 104 Pa (air) at 1000°C.
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W. Gong, H. Yun, Y.B. Ning, J.E. Greedan, W.R. Datars, and C.V. Stager, J. Solid State Chem., 90, 320 (1991).
N.-H. Chan, R.K. Sharma, and D.M. Smyth, J. Electrochem. Soc., 128, 1762 (1981).
U. Balachandran and N.G. Eror, J. Solid State Chem., 39, 351 (1981).
M. Higuchi, K. Aizawa, K. Yamaya, and K. Kodaira, J. Solid State Chem., 92, 573 (1991).
R. Moos and K.H. Härdtl, J. Appl. Phys., 80–1, 393 (1996).
O.A. Marina, Nathan L. Canfield, and Jeff W. Stevenson, Solid State Ionics, 149, 21 (2002).
G. Pudmich, B.A. Boukamp, M. Gonzalez-Cuenca, W. Jungen, W. Zipprich, and F. Tietz, Solid State Ionics, 135, 433 (2000).
S.A. Howard, J.K. Yau, and H.U. Anderson, J. Appl. Phys., 65–4, 1492 (1989).
U. Balachandran and N.G. Eror, J. Solid State Chem., 40, 85 (1981).
N.G. Eror and U. Balachandran, Commun. Am. Ceram. Soc., C64, 75 (1981).
B.F. Flandermeyer, A.K. Agarwal, H.U. Anderson, and M.M. Nasrallah, J. Mater. Sci., 19, 2593 (1984).
J. Canales-Vázquez, S.W. Tao, and J.T.S. Irvine, Solid State Ionics, 159, 159 (2003).
S. Hashimoto, L. Kindermann, F.W. Poulsen, and M. Mogensen, J. Alloy and Compounds, in press.
R. Moos, S. Schöllhammer, and K.H. Härdtl, Appl. Phys. A, 65, 291 (1997).
B. Oderkirk, U. Balachandran, N.G. Eror, and J.S. Blakemore, Mater. Res. Bull., 17, 199 (1982).
N.G. Eror and U. Balachandran, J. Electrochem. Soc., 129–5, 1021 (1982).
K. Uematu, O. Sakurai, N. Mizutani, and M. Kato, J. Mater. Sci., 19, 3671 (1984).
P.R. Slater, D.P. Fagg, and J.T.S. Irvine, J. Mater. Sci., 7–12, 2495 (1997).
S. Hui and A. Petric, J. Euro. Ceram. Soc., 22, 1673 (2002).
S.D. Ruddlsesden and P. Popper, Acta Cryst., 11, 54 (1958).
A. Fujimori, J. Phys. Chem, Solid, 53–12, 1595 (1992).
H.L. Tuller, Solid State Ionics, 94, 63 (1997).
S. Miyoshi, J.-O. Hong, K. Yashiro, A. Kaimai, Y. Nigara, K. Kwamura, and J. Mizusaki, Solid State Ionics, 154–155, 257 (2002).
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Hashimoto, S., Kindermann, L., Larsen, P.H. et al. Conductivity and expansion at high temperature in Sr0.7La0.3TiO3−α prepared under reducing atmosphere. J Electroceram 16, 103–107 (2006). https://doi.org/10.1007/s10832-006-3490-1
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DOI: https://doi.org/10.1007/s10832-006-3490-1