Carbon-coated Fe–Co(C) nanocapsules prepared by arc discharge in methane

Abstract

Characterization and magnetic properties of Fe–Co(C) nanocapsules were investigated systematically by means of x-ray diffraction, Mössbauer spectroscopy, x-ray photoelectron spectroscopy, transmission electron microscopy, energy dispersive spectroscopy analysis, chemical analysis, oxygen determination, and magnetization measurement. The effects of elemental carbon, decomposed from a methane atmosphere in carbon arc process, on the phase structures, magnetic states and surface characterization were studied. Carbon atoms favor forming a new core/shell type structure, consisting of a carbon coating and a core containing a carbon solution. The mechanism of formation of the nanocapsules as well as origin of ferromagnetism and paramagnetism are discussed.

Preparation and Thermal Analysis of Sn-Ag Nano Solders

“…Recently, several researchers applied the arc discharging method as a new preparation method of nano particles. [5][6][7][8] This convenient method has some unique advantages compared to other methods. Variety systems of binary, ternary, etc.…”

One-step, in situ growth of unmodified graphene – magnetic nanostructured composites

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Structure and magnetic properties of Cr(N)–β-Cr2N nanoparticles prepared by arc-discharge

“…It may shed some lights on the study of enlarging the family of nanocapsules/nanoparticles. In our previous work [14][15][16], a process of arc-discharge was developed to fabricate magnetic nanocapsules/nanoparticles with different types of shell-core structures by changing either atmosphere or anode material.…”