Facile synthesis and characterization of Co nanoplatelets with tunable dimensions via solution reduction process |
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Authors: | Huazhi Wang Lei Zhang Juanjuan Huang Jiangong Li |
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Institution: | (1) Key Laboratory for Magnetism and Magnetic Materials of the Ministry of Education and Institute of Materials Science and Engineering, Lanzhou University, Lanzhou, 730000, China |
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Abstract: | Plate-like Co nanoparticles with different sizes were synthesized by solution reduction process. The size of Co nanoplatelets
can be tuned by varying the concentration of CoCl2·6H2O and the dosage of N2H4·2H2O. The Co nanoplatelets with the different size all exist in both fcc and hcp crystal structures. The normal direction of
the nanoplatelets is perpendicular to the (002) planes of hcp phase or to the (111) planes of fcc phase. The saturation magnetizations
of the samples are lower than the corresponding bulk value. The coercivities of the samples vary with the phase content and
the particle size. The shape control mechanism was discussed. |
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