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Enhanced magnetization and improved leakage in Er-doped BiFeO3 nanoparticles

Authors

  • Hai-Feng Zhou,

    1. School of Science, Beijing University of Chemical Technology, 15 Beisanhuan East Road, Chaoyang District, 100029 Beijing, People's Republic of China
    2. Beijing Key Laboratory of Environmentally Harmful Chemicals Assessment, Beijing University of Chemical Technology, 15 Beisanhuan East Road, Chaoyang District, 100029 Beijing, People's Republic of China
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  • Zhi-Ling Hou,

    Corresponding author
    1. School of Science, Beijing University of Chemical Technology, 15 Beisanhuan East Road, Chaoyang District, 100029 Beijing, People's Republic of China
    2. Beijing Key Laboratory of Environmentally Harmful Chemicals Assessment, Beijing University of Chemical Technology, 15 Beisanhuan East Road, Chaoyang District, 100029 Beijing, People's Republic of China
    • Phone: +86 106 443 3867, Fax: +86 106 443 4898
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  • Ling-Bao Kong,

    1. School of Science, Beijing University of Chemical Technology, 15 Beisanhuan East Road, Chaoyang District, 100029 Beijing, People's Republic of China
    2. Beijing Key Laboratory of Environmentally Harmful Chemicals Assessment, Beijing University of Chemical Technology, 15 Beisanhuan East Road, Chaoyang District, 100029 Beijing, People's Republic of China
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  • Hai-Bo Jin,

    1. School of Materials Science and Engineering, Beijing Institute of Technology, 100081 Beijing, People's Republic of China
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  • Mao-Sheng Cao,

    1. School of Materials Science and Engineering, Beijing Institute of Technology, 100081 Beijing, People's Republic of China
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  • Xin Qi

    1. School of Science, Beijing University of Chemical Technology, 15 Beisanhuan East Road, Chaoyang District, 100029 Beijing, People's Republic of China
    2. Beijing Key Laboratory of Environmentally Harmful Chemicals Assessment, Beijing University of Chemical Technology, 15 Beisanhuan East Road, Chaoyang District, 100029 Beijing, People's Republic of China
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Abstract

Pure and Er-doped BiFeO3 nanoparticles were prepared using a sol–gel method. The remanent magnetization was found to increase with increasing Er concentration. Due to the cocontribution of both the ferromagnetic coupling between Er3+ and Fe3+ ions and the suppression of spatial spin structure of BiFeO3, Er substitution is a more effective approach of enhanced magnetization than the other rare-earth (RE) element substitutions. The observed dielectric loss behavior in the doped sample indicated that the leakage current decreased due to the substitution with Er. The evidence of enhanced magnetization and improved leakage in Er-doped BiFeO3 at room temperature makes it a good candidate for potential applications.

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