Vacancy-induced interfacial ferromagnetic features in SmFeO-filled graphitic carbon foam.

We report a novel structural and magnetic investigation of carbon foam (CFM) materials filled with SmFeO crystals produced by (1) high temperature fusion between SmO- and FeC-filled carbon onions and (2) annealing of iron filled CFM with nanosized SmO. Presence of a defect-rich monolayer-like CFM arrangement characterized by sharp interfaces with a SmFeO single-crystal phase is demonstrated through TEM and HRTEM. Further, the presence of intense sp-rich features with variable carbonate content is evidenced by XPS and Raman spectroscopy.

On the morphological, structural and electrochemical properties of entangled Cu-filled carbon nano-onions.

In this work we demonstrate an advanced chemical vapour synthesis approach in which the synthesis of Cu-filled carbon nano-onions (CNOs) is achieved by direct sublimation and pyrolysis of a not previously used precursor, namely chloro(1,5-cyclooctadiene)copper(i) dimer. The cross-sectional morphology and filling-ratio of the as grown CNOs were characterized by detailed transmission electron microscopy (TEM), high resolution TEM analyses, Fourier transform and lattice profile analyses. The structural graphitic arrangement and electronic properties of the CNOs were then investigated by means of X-ray diffraction and absorption spectroscopy.