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Uniform Magnetic Chains of Hollow Cobalt Mesospheres from One‐Pot Synthesis and Their Assembly in Solution |
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| Authors: | L. Guo F. Liang X. Wen S. Yang L. He W. Zheng C. Chen Q. Zhong |
| Affiliation: | 1. School of Materials Science and Engineering, Beijing University of Aeronautics and Astronautics, 100083 Beijing, P.R. China;2. Department of Chemistry, Hong Kong University of Science and Technology, Kowloon, Hong Kong, P.R. China;3. Department of Physics, Peking University, 100871 Beijing, P.R. China |
| Abstract: | Magnetic chains up to 10 μm in length formed of hollow cobalt mesospheres (480–850 nm) with a 60 nm thick shell are synthesized by a new soft‐assembly protocol. The obtained chains show a saturation magnetization of 37.5 emu g–1, a remnant magnetization of 1.55 emu g–1, and a coercivity of ca. 66 Oe at 300 K. A possible mechanism for the formation of the chainlike hollow structures is proposed. |
| Keywords: | Hollow materials Magnetic materials Self‐assembly Solution processing |