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Citation: Jing Xi-Ping, Anthony R.West. AC Impedance and Gas Concentration Cell Measurements for Ba₁₂Y_4.67Ti₈O₃₅[J]. Acta Physico-Chimica Sinica, ;2002, 18(07): 617-623. doi: 10.3866/PKU.WHXB20020710 shu

AC Impedance and Gas Concentration Cell Measurements for Ba₁₂Y_4.67Ti₈O₃₅

1.
State Key Laboratory of Rate Earth Materials Chemistry and Applicalion,College of Chemistry and Molecular Engineering,Peking University, Beijing　100871;Department of Engineering Materials,University of Sheffield, Sheffield S1 3JD, UK

Received Date: 28 November 2001
Available Online: 15 July 2002

A ceramic phase Ba12Y4.67Ti8O35 was prepared by solid state reactions,the electrical properties of which were characterised by means of AC impedance spectroscopy,gas concentration cell as well as thermoelectric measurements. The measurements indicate that this material is an oxide ion/hole mixed conductor. At 700 ℃,the bulk conductivity of the material is ～2×10－3Ω－1•cm－1.The impedance data measured at 700 ℃ in air,O2 and N2 atmospheres were analysed by using computer curve fitting,which explains that the ion diffusion impedance is hidden in air and O2 atmospheres because the oxide ion pathway is short circuited by electronic conduction.
- AC impedance;Oxygen concentration cell;Mixed conductor;Equivalent circuit fitting;Ba₁₂Y_4.67Ti₈O₃₅
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AC Impedance and Gas Concentration Cell Measurements for Ba12Y4.67Ti8O35

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通讯作者: 陈斌, bchen63@163.com

AC Impedance and Gas Concentration Cell Measurements for Ba₁₂Y_4.67Ti₈O₃₅