李帅, 盛芸芳. YBaCo2O5+δ混合导体的电学性能研究[J]. 南昌航空大学学报(自然科学版), 2011, 25(3): 37-41.
引用本文: 李帅, 盛芸芳. YBaCo2O5+δ混合导体的电学性能研究[J]. 南昌航空大学学报(自然科学版), 2011, 25(3): 37-41.
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LI Shuai, SHENG Yun-fang. Study on the Electronic Properties of YBaCo2O5+δ Mixed Conductor[J]. Journal of nanchang hangkong university(Natural science edition), 2011, 25(3): 37-41.
Citation: LI Shuai, SHENG Yun-fang. Study on the Electronic Properties of YBaCo2O5+δ Mixed Conductor[J]. Journal of nanchang hangkong university(Natural science edition), 2011, 25(3): 37-41.
shu

YBaCo2O5+δ混合导体的电学性能研究

Study on the Electronic Properties of YBaCo2O5+δ Mixed Conductor

    摘要
  • 摘要: 采用柠檬酸盐法制备了纯相YBaCo2O5+δ粉体。西贝克系数测量结果表明,在200℃～800℃内YBaCo2O5+δ的载流子类型为p型。利用间接碘量法测定了YBaCo2O5+δ样品中Co离子的平均价态及氧非化学计量数,实验发现,淬火温度为300℃时,YBaCo2O5+δ中Co离子的平均价态和氧非化学计量数最大。利用四端子法测量其在空气中不同温度下的电导率,得到电导率范围为30.99～45.04S.cm-1。

     

    Abstract: Pure YBaCo2O5+δ was synthesised by citric acid method.Through seebeck coefficients of measurement,shows that YBaCo2O5+δ is a p-type conductor when the temperature is 200~800℃.The average valence of Co and the oxygen nonstoichiometry of YBaCo2O5+δ were studied by means of indirect iodometric titration,it was found when the temperature is at 300℃,the average valence of cobalt ions and oxygen nonstoichiometr in YBaCo2O5+δ are the largest.Measured conductivity using four-pole method at different temperatures in air,obtain its conductivity range is 30.99~45.04 S.cm-1.

     

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