Article ID Journal Published Year Pages File Type
1619540 Journal of Alloys and Compounds 2011 4 Pages PDF
Abstract

Carbon nanotube embedded cobalt oxide (CNT/Co-oxide) nanocomposite powders were synthesized by molecular-level mixing followed by calcination. The surface morphology of the fabricated nanocomposite powders shows Co-oxide coated CNTs homogeneously dispersed in the Co-oxide nanopowders. XRD patterns reveal that CoO–Co3O4 nanopowders were obtained as a complex phase. The nanocomposite powders exhibit ferromagnetism with a saturation magnetization of 75emu g−1, while CoO–Co3O4 nanopowders without CNTs are paramagnetic. These results indicate that incorporating CNTs into Co-oxide nanopowders triggers a change of the magnetic properties towards ferromagnetism.

Research highlights▶ CNT-embedded Co oxide matrix nanocomposite powders. ▶ Functionalized CNTs showing a weak ferromagnetic behavior. ▶ Co oxide nanopowders exhibiting a paramagnetic behavior. ▶ CNT added in Co oxides triggers a change of magnetic behavior towards ferromagnetism.

Related Topics
Physical Sciences and Engineering Materials Science Metals and Alloys
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