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Tunable Magnetism in Carbon‐Ion‐Implanted Highly Oriented Pyrolytic Graphite
Author(s) -
Xia Huihao,
Li Weifeng,
Song You,
Yang Xinmei,
Liu Xiangdong,
Zhao Mingwen,
Xia Yueyuan,
Song Chen,
Wang TianWei,
Zhu Dezhang,
Gong Jinlong,
Zhu Zhiyuan
Publication year - 2008
Publication title -
advanced materials
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 10.707
H-Index - 527
eISSN - 1521-4095
pISSN - 0935-9648
DOI - 10.1002/adma.200801205
Subject(s) - materials science , pyrolytic carbon , ferromagnetism , magnetism , highly oriented pyrolytic graphite , curie temperature , graphite , carbon fibers , ion , magnetization , condensed matter physics , electron , chemical engineering , metallurgy , composite material , magnetic field , pyrolysis , nuclear physics , organic chemistry , chemistry , physics , quantum mechanics , composite number , engineering
Stable, room‐temperature ferromagnetism in carbon — more precisely, highly oriented pyrolytic graphite — with Curie temperature as high as 460 K is reported. The magnetization can be easily tuned by controlling the low‐energy carbon ion implantation dose used to create the samples. Theory indicates that the ferromagnetic order likely results from itinerant π ‐electrons from defects (see figure).