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Preparation and properties of highly conductive La1−x M x MnO3−y thin film showing magnetic effect from sol-gel process

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Abstract

The sol-gel synthesis of Sr-doped-LaMnO3 thin film was investigated. The optimum condition was obtained when strontium, lanthanum and manganese nitrates were used as raw materials and diethylene or propylene glycol was used as solvent. An alumina plate was used as a substrate. The film thickness was about 0.2 μm for one dip coating. The conductivity of Sr-substituted-LaMnO3 increased with increasing Sr content and showed ferromagnetic properties. The conduction mechanism was a hopping conduction due to the small polaron. The metal-semiconductor transition at around room temperature was considered to be caused by the Jahn-Teller effect.

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Authors and Affiliations

  1. Faculty of Industrial Science and Technology, Science University of Tokyo, 2641 Noda, 278, Chiba, Japan

    N. Fujihira, T. Sei & T. Tsuchiya

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  1. N. Fujihira
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  2. T. Sei
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  3. T. Tsuchiya
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Fujihira, N., Sei, T. & Tsuchiya, T. Preparation and properties of highly conductive La1−x M x MnO3−y thin film showing magnetic effect from sol-gel process. J Sol-Gel Sci Technol 4, 135–140 (1995). https://doi.org/10.1007/BF00491679

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  • DOI: https://doi.org/10.1007/BF00491679

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