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Structure and magnetic properties of carbon microspheres prepared by solid-phase pyrolysis of organic compounds

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Journal of Contemporary Physics (Armenian Academy of Sciences) Aims and scope

Abstract

Carbon microspheres with a mean diameter of 3–3.5 μm were prepared by solid-phase pyrolysis of polyethylene and metal-free phthalocyanine. Morphology, structure and magnetic properties of the samples were investigated by electron microscopy, Raman spectroscopy, magnetometry and electron paramagnetic resonance. Carbon microspheres are composed of graphitic nanocrystallites with longitudinal sizes of 10–15 nm. The samples reveal strong paramagnetism, which in the case of metal-free phthalocyanine pyrolysis is 3 times higher (∼5×1019 spin/g) due to the unpaired spins of impurity nitrogen atoms.

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Authors and Affiliations

  1. Institute for Physical Research, NAS of Armenia, Ashtarak, Armenia

    A. S. Manukyan, A. A. Mirzakhanyan, R. D. Khachaturyan, A. T. Gyulasaryan & E. G. Sharoyan

  2. State University of California, Los Angeles, USA

    A. N. Kocharian

  3. Southern Federal University, Rostov-on-Don, Russia

    Yu. I. Yuzyuk

Authors
  1. A. S. Manukyan
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  2. A. A. Mirzakhanyan
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  3. R. D. Khachaturyan
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  4. A. T. Gyulasaryan
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  5. A. N. Kocharian
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  6. Yu. I. Yuzyuk
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  7. E. G. Sharoyan
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Corresponding author

Correspondence to A. S. Manukyan.

Additional information

Original Russian Text © A.S. Manukyan, A.A. Mirzakhanyan, R.D. Khachaturyan, A.T. Gyulasaryan, A.N. Kocharian, Yu.I. Yuzyuk, E.G. Sharoyan, 2015, published in Izvestiya NAN Armenii, Fizika, 2015, Vol. 50, No. 2, pp. 258–263.

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Manukyan, A.S., Mirzakhanyan, A.A., Khachaturyan, R.D. et al. Structure and magnetic properties of carbon microspheres prepared by solid-phase pyrolysis of organic compounds. J. Contemp. Phys. 50, 195–199 (2015). https://doi.org/10.3103/S1068337215020140

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  • DOI: https://doi.org/10.3103/S1068337215020140

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