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Low-Symmetry Iron Oxide Nanocrystals Bound by High-Index Facets

Authors

  • Jingzhou Yin,

    1. Department of Materials Science and Engineering, Nanjing University, Nanjing 210093 (China)
    2. State Key Laboratory of Coordination Chemistry, Coordination Chemistry Institute, Nanjing National Laboratory of Microstructures, Nanjing University, Nanjing 210093 (China)
    3. School of Chemistry and Chemical Engineering, Huaiyin Normal University, Huai'an 223300 (China)
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  • Zhinan Yu,

    1. State Key Laboratory of Coordination Chemistry, Coordination Chemistry Institute, Nanjing National Laboratory of Microstructures, Nanjing University, Nanjing 210093 (China)
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  • Feng Gao Prof.,

    1. Department of Materials Science and Engineering, Nanjing University, Nanjing 210093 (China)
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  • Jianjun Wang,

    1. Department of Materials Science and Engineering, Nanjing University, Nanjing 210093 (China)
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  • Huan Pang,

    1. State Key Laboratory of Coordination Chemistry, Coordination Chemistry Institute, Nanjing National Laboratory of Microstructures, Nanjing University, Nanjing 210093 (China)
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  • Qingyi Lu Prof.

    1. State Key Laboratory of Coordination Chemistry, Coordination Chemistry Institute, Nanjing National Laboratory of Microstructures, Nanjing University, Nanjing 210093 (China)
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  • This work was supported by the National Natural Science Foundation of China (Grant Nos. 50772047, 20671049, and 20721002), the National Basic Research Program of China (Grant No. 2007CB925102), and the Program for New Century Excellent Talents in University.

Abstract

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Just the shape of it: Tetrakaidecahedral (see picture, left) and oblique parallelepiped (right) α-Fe2O3 polyhedra with exposed high-index facets were obtained in high yield. Magnetic studies show that these two forms of iron oxide have distinct magnetic properties owing to their different shapes and different exposed high-indexed facets.

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