Preparation of Self-doped La1-xMnO3+δ Polycrystalline by Electrochemical Deposition

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作者：
Huang, Yun-Hui [1 ]
Wang, Zhe-Ming [1 ]
Zhu, Tao [1 ]
Chen, Xing [1 ]
Liao, Chun-Sheng [1 ]
Yan, Chun-Hua [1 ]
机构：
[1] State Key Lab. Rare Earth Mat. C., PKU-HKU Jt. Lab. Rare Earth Mat. B., Peking University, Beijing 100871, China
来源：
| 2001年 / Higher Education Press卷 / 22期
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摘要：
The perovskite-type self-doped La1-x MnO3+δ was prepared by heat treatment of the gel precursor deposited on a Pt electrode in solutions containing both La3+ and Mn2+ ions using catholic reduction electrochemical method. The influence of molar ratio of La3+ and Mn2+ in solution, deposition potential and current density on product composition was investigated. Our results indicate that varying the ratio of La3+ and Mn2+ in solution, deposition potential or current density can conveniently control the product composition, lattice deficiencies and hence the self-doping level x. In addition, the transport properties are mainly influenced by Mn4+ content and ion vacancies for the self-doped manganites.
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