崔明杰, 张国光, 李琴, 刘婷. LaSr3Fe3O10-δ混合导体结构及氧非化学计量的研究[J]. 南昌航空大学学报(自然科学版), 2007, 21(3): 84-89.
引用本文: 崔明杰, 张国光, 李琴, 刘婷. LaSr3Fe3O10-δ混合导体结构及氧非化学计量的研究[J]. 南昌航空大学学报(自然科学版), 2007, 21(3): 84-89.
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CUI Ming-jie, ZHANG Guo-guang, LI Qin, LIU Ting. Studies on the structure and oxygen nonsotichometry of LaSr3Fe3O10-δ mixed conductor[J]. Journal of nanchang hangkong university(Natural science edition), 2007, 21(3): 84-89.
Citation: CUI Ming-jie, ZHANG Guo-guang, LI Qin, LIU Ting. Studies on the structure and oxygen nonsotichometry of LaSr3Fe3O10-δ mixed conductor[J]. Journal of nanchang hangkong university(Natural science edition), 2007, 21(3): 84-89.
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LaSr3Fe3O10-δ混合导体结构及氧非化学计量的研究

Studies on the structure and oxygen nonsotichometry of LaSr3Fe3O10-δ mixed conductor

    摘要
  • 摘要: 采用柠檬酸盐法制备了纯的LaSr3Fe3O10-δ粉体.利用间接碘量法测定了LaSr3Fe3O10-δ系列样品中铁离子的平均价态和氧的非化学计量值.实验发现,随着温度的逐渐升高LaSr3Fe3O10-δ逐渐失氧,三价铁浓度增加使得铁的平均价态降低.

     

    Abstract: Pure LaSr3Fe3O10-δ was synthesised by citric acid method.The average valence of Fe and the oxygen nonstoichiometry of LaSr3Fe3O10-δ were studied by means of indirect iodometric titration.It has been found that the increase of oxygen nonstoichiometry δ with the temperature gives rise to the increase of Fe content,thus the decreasing the average valence of Fe.

     

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