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Monodispersive CoPt Nanoparticles Synthesized Using Chemical Reduction Method |
| SHEN Cheng-Min;HUI Chao;YANG Tian-Zhong;XIAO Cong-Wen,CHEN Shu-Tang;DING Hao;GAO Hong-Jun |
| Beijing National Laboratory for Condensed Matter Physics, Institute of Physics, Chinese Academy of Sciences, Beijing, 100080 |
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SHEN Cheng-Min, HUI Chao, YANG Tian-Zhong et al 2008 Chin. Phys. Lett. 25 1479-1481 |
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Abstract Monodispersive CoPt nanoparticles in sizes of about 2.2nm are synthesized by superhydride reduction of CoCl2 and PtCl2 in diphenyl ether. The as-prepared nanoparticles show a chemically disordered A1 structure and are
superparamagnetic. Thermal annealing transforms the A1 structure into chemically ordered L10 structure and the particles are ferromagnetic at room temperature.
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| Keywords:
81.20.Ka
85.40.Ux
75.60.-d
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Received: 12 December 2007
Published: 31 March 2008
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| PACS: |
81.20.Ka
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(Chemical synthesis; combustion synthesis)
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85.40.Ux
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75.60.-d
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(Domain effects, magnetization curves, and hysteresis)
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