Magnetism of purified amorphous carbon

In this work, magnetic properties of activated carbon coal, which is also named amorphous carbon, were investigated. Composition and structure analysis was performed by XRD, SEM and EDS techniques. Position and width of peaks on XRD pattern confirmed amorphous structure of coals with small degree of...

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Bibliographic Details
Main Authors: Komlev, Anton, Lähderanta, Erkki, Shevchenko, Evgeniy, Vorob’ev-Desyatovskii, Nikolay
Format: Conference Proceeding
Language:English
Subjects:
Activated carbon
Amorphous structure
Antiferromagnetism
Carbon
Graphitization
Magnetic measurement
Magnetic properties
Magnetism
Structural analysis
Superconducting quantum interference devices
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Summary:In this work, magnetic properties of activated carbon coal, which is also named amorphous carbon, were investigated. Composition and structure analysis was performed by XRD, SEM and EDS techniques. Position and width of peaks on XRD pattern confirmed amorphous structure of coals with small degree of graphitization. Magnetic measurements were performed by SQUID magnetometer. According to thermomagnetic measurements, in part of the samples, antiferromagnetic transition was observed near 120 K. Nature of such phenomena, as well as effect of oxygen and magnetic contaminations on thermomagnetic measurements are discussed referring to similar results from previous researches and data from literature.
ISSN:2100-014X
2101-6275
2100-014X
DOI:10.1051/epjconf/201818504012