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Monodisperse Magnetic Single-Crystal Ferrite Microspheres

Authors

  • Hong Deng Dr.,

    1. Department of Chemistry and the Key Laboratory of Atomic & Molecular Nanosciences (Ministry of Education, China), Tsinghua University, Beijing, 100084, P.R. China
    2. National Center for Nanoscience and Nanotechnology, Beijing, 100084, P.R. China, Fax: (+86) 10-6278-8765
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  • Xiaolin Li,

    1. Department of Chemistry and the Key Laboratory of Atomic & Molecular Nanosciences (Ministry of Education, China), Tsinghua University, Beijing, 100084, P.R. China
    2. National Center for Nanoscience and Nanotechnology, Beijing, 100084, P.R. China, Fax: (+86) 10-6278-8765
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  • Qing Peng,

    1. Department of Chemistry and the Key Laboratory of Atomic & Molecular Nanosciences (Ministry of Education, China), Tsinghua University, Beijing, 100084, P.R. China
    2. National Center for Nanoscience and Nanotechnology, Beijing, 100084, P.R. China, Fax: (+86) 10-6278-8765
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  • Xun Wang,

    1. Department of Chemistry and the Key Laboratory of Atomic & Molecular Nanosciences (Ministry of Education, China), Tsinghua University, Beijing, 100084, P.R. China
    2. National Center for Nanoscience and Nanotechnology, Beijing, 100084, P.R. China, Fax: (+86) 10-6278-8765
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  • Jinping Chen Prof.,

    1. Department of Physics, Peking University, Beijing, 100084, P.R. China
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  • Yadong Li Prof.

    1. Department of Chemistry and the Key Laboratory of Atomic & Molecular Nanosciences (Ministry of Education, China), Tsinghua University, Beijing, 100084, P.R. China
    2. National Center for Nanoscience and Nanotechnology, Beijing, 100084, P.R. China, Fax: (+86) 10-6278-8765
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  • This work was supported by the NSFC (90 406 003, 20 401 010, 50 372 030, 20 025 102, 20 131 030), the Foundation for the Author of National Excellent Doctoral Dissertation of the P.R. China, and the state key project of fundamental research for nanomaterials and nanostructures (2003CB716901).

Abstract

original image

Particularly uniform: Monodisperse ferrite microspheres can be synthesized to have diameters of about 200–800 nm (TEM image, left). High-resolution TEM analysis (image, right and inset) shows that each microsphere is a single crystal. Their hydrophilic and magnetic properties impart to the microparticles many potential uses in electronics and biomedicine.

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