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.
*We would like to thank the Interdisciplinary Institute of Sciences, Doctoral Program in Physical Sciences and EITP at Universidad del Quindío and the Center of Excellence for Novel Materials (CENM) at Universidad del Valle, Cali for the financial support.
Presenters
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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