Room-temperature ferromagnetism in oxidized-graphenic nanoplatelets induced by topographic defects

POSTER

Abstract

Pyrolytic oxidized-graphenic nanoplatelets (OGNP) obtained from bamboo pyroligneous acid (BPA) by varying the density of extended defects, show room-temperature ferromagnetism. Topographic defects, created during the fabrication process, arise from a natural formation of clusters; such clusters drastically distort the graphitic basal plane, giving rise to abrupt surface curvatures. Topographic defects were found to be sources of the magnetic signal, as evidenced by bulk magnetization and MFM measurements. Increased defect density, which is tuned by carbonization temperature, results in enhanced magnetization.

Presenters

  • John Prias

    Optoelectronics, Universidad del Quindío, Doctoral Program in Physical Sciences, IIS and EITP, University of Quindio, Doctoral Program in Physical Sciences, University of Quindio, Doctoral Program in Physical Sciences, Interdisciplinary Institute of Sciences, University of Quindio, Physical Sciences Doctoral Program, Interdisciplinary Institute of Sciences, University of Quindio

Authors

  • John Prias

    Optoelectronics, Universidad del Quindío, Doctoral Program in Physical Sciences, IIS and EITP, University of Quindio, Doctoral Program in Physical Sciences, University of Quindio, Doctoral Program in Physical Sciences, Interdisciplinary Institute of Sciences, University of Quindio, Physical Sciences Doctoral Program, Interdisciplinary Institute of Sciences, University of Quindio

  • Katherine Gross

    Department of Physics, University of Valle

  • Hernando Ariza

    Optoelectronics, Universidad del Quindío, Interdisciplinary Institute of sciences, University of Quindio, Doctoral Program in Physical Sciences, Interdisciplinary Institute of Sciences, University of Quindio

  • Pedro Prieto

    University of Valle

  • Cinzia Di Giorgio

    Department of Physics, University of Salerno

  • Fabrizio Bobba

    Department of Physics, University of Salerno, Physics, Salerno University

  • Annamaria Cucolo

    Department of Physics, University of Salerno