| 1 | Structure and Magnetic Properties of Boron-oxide and Boron-nitride Coated Iron Nanocapsules显示文摘The boron-oxide coated iron nanocapsules have been prepared by arc-discharge in a mixture of diborane and nitrogen,and then the boron-nitride coated iron nanocapsules by a subsequent annealing under a nitrogen atmosphere at 1100 ℃.After the arc-discharge,the boron-oxide coated iron nanocapsules form,which show an amorphous surface layer of B2O3 (and/or B) and a core of γ-Fe,α-Fe,FeB phases.After being annealed,part of the α-Fe phase transforms to the γ-Fe phase,and the FeB phase decomposes while the BN phase forms.The BN shell structure formed in the BN encapsulating iron nanocapsules is incomplete.Magnetic properties of the boron-oxide coated and the boron-nitride coated iron nanocapsules were compared and discussed in terms of the particles sizes,the phase components,and the surface structures. | W.S. Zhang J.G. Zheng E. Briick P.Z. Si D.Y. Geng Z.D. Zhang | 2010 | Journal of Materials Science & Technology2010，26，11： | 0 |
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