Magnetic frustration of graphite oxide

被引：0
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作者：
Dongwook Lee
Jiwon Seo
机构：
[1] University of Cambridge,Department of Physics
[2] Physics and Applied Physics,Department of Physics and Applied Physics
[3] School of Physical & Mathematical Sciences,undefined
[4] Nanyang Technological University,undefined
[5] Yonsei University,undefined
来源：
Scientific Reports | / 7卷
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摘要：
Delocalized π electrons in aromatic ring structures generally induce diamagnetism. In graphite oxide, however, π electrons develop ferromagnetism due to the unique structure of the material. The π electrons are only mobile in the graphitic regions of graphite oxide, which are dispersed and surrounded by sp3-hybridized carbon atoms. The spin-glass behavior of graphite oxide is corroborated by the frequency dependence of its AC susceptibility. The magnetic susceptibility data exhibit a negative Curie temperature, field irreversibility, and slow relaxation. The overall results indicate that magnetic moments in graphite oxide slowly interact and develop magnetic frustration.
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