Ferromagnetism in oriented graphite samples -: art. no. 024429
Ferromagnetism in oriented graphite samples -: art. no. 024429
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DOI：
10.1103/physrevb.66.024429
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发表时间：
2002-07-01
影响因子：
3.7
通讯作者：
Lösche, M
中科院分区：
文献类型：
--
作者：
Esquinazi, P;Setzer, A;Lösche, M
我们研究了各种良好表征的高取向热解石墨（HOPG）、基什石墨和天然石墨样品的磁化强度，以研究最近报道的铁磁信号及其与铁磁杂质的可能关系。 HOPG 样品在平行于石墨烯层的施加场下获得的磁化结果（以最小化抗磁性背景）显示与磁性杂质浓度没有相关性。我们的总体结果表明石墨中铁磁性的内在起源。我们讨论铁磁信号的可能起源。
We have studied the magnetization of various well characterized samples of highly oriented pyrolitic graphite (HOPG), Kish graphite, and natural graphite to investigate the recently reported ferromagneticlike signal and its possible relation to ferromagnetic impurities. The magnetization results obtained for HOPG samples for applied fields parallel to the graphene layers-to minimize the diamagnetic background-show no correlation with the magnetic impurity concentration. Our overall results suggest an intrinsic origin for the ferromagnetism found in graphite. We discuss possible origins of the ferromagnetic signal.