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室温下graphene的铁磁性
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分享最近南开陈永胜发的一篇工作。非常简单的方法，证实了以前缺陷造成铁磁性的一些猜测。但个人感觉关于铁磁性的由来仍然基于少数的几个猜测上。期待未来可以给出更为肯定的解释。 Room-Temperature Ferromagnetism of Graphene Aiming at molecular-based magnets, ferromagnetism of pure carbon-based materials is fundamentally and technologically extremely important for many applications. While it is still not fully understood, many recent theoretical works have suggested that one-atom-thick two-dimensional graphene materials may show ferromagnetism due to the existence of various defects or topological structures as the spin units and the possible long-range ordered coupling among them. Here, we report the experimental results on the ferromagnetism of graphene-based materials at room temperature. The observed room-temperature ferromagnetism is believed to come from the defects on graphene. http://www.namipan.com/d/1c889dd4dade20ca96bb1e4575ad12c8322ef6bc29ca0600 |
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