Room-temperature ferromagnetism induced by boundary defects in graphene oxide nanoplatelets
POSTER
Abstract
Graphene oxide nanoplatelets from bamboo pyroligneous acid (GO-BPA) show room-temperature ferromagnetism, by using the double thermal decomposition (DTD) method at different carbonization temperatures from 673 to 973 K. The GO-BPA samples were characterized by using Raman, FTIR, XRD, XPS, HR-TEM, I-V curves, MFM and VSM techniques. Magnetic measurenets suggest that increased carbonization temperature increases graphite conversion, boundary defects, desorption of some organic compounds, phonon response and magnetization saturation, respectively. Room-temperature ferromagnetic behavior was correlated with the variation of the boundary defect density.
*We would like to thank the Interdisciplinary Institute of Sciences and EITP, Universidad del Quindío and the Center of Excellence for Novel Materials at Universidad del Valle, Cali for the finantial support
Presenters
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John Prias
- Universidad del Quindio