Ferromagnetism in Oriented Graphite Samples
强关联电子
2009-11-07 v1 材料科学
摘要
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 ferromagnetic-like 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.
引用
@article{arxiv.cond-mat/0203153,
title = {Ferromagnetism in Oriented Graphite Samples},
author = {P. Esquinazi and A. Setzer and R. Hoehne and C. Semmelhack and Y. Kopelevich and D. Spemann and T. Butz and B. Kohlstrunk and M. Loesche},
journal= {arXiv preprint arXiv:cond-mat/0203153},
year = {2009}
}
备注
11 figures