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人们很早就发现,天然石墨既具有导电性,又具有顺磁性。随着石墨烯的发现,人们对石墨的导电性和本征磁性进行了更深入的探索。笔者在阐述石墨的电、磁本性的基础上,编选和设计了验证石墨具有导电性和顺磁性的几个典型小实验。一、石墨与石墨烯石墨具有导电性,因为石墨是由石墨烯组成的。石墨烯是由碳原子六角结构紧密排列的二维单层石墨片,当把石墨片剥成单层之后,这种只有一个碳原子厚度的单层二维晶体就是石墨烯。而石墨就是由一层层以蜂窝状有序排列的平面碳原子堆叠而形成的,石墨的层间作用力较弱,很容易互相剥离,形成薄薄的石墨片。石墨烯是一种新型二维平面碳纳米材料,其
It has long been discovered that natural graphite is both electrically conductive and paramagnetic. With the discovery of graphene, people conducted a more in-depth exploration of the conductivity and intrinsic magnetic properties of graphite. Based on the electricity and magnetic properties of graphite, the author compiles and designs several typical experiments to verify the conductivity and paramagnetic properties of graphite. First, graphite and graphene Graphite has conductivity, because graphite is composed of graphene. Graphene is a two-dimensional monolayer graphite sheet closely packed by a hexagonal carbon atom structure. When the graphite sheet is peeled into a single layer, the single-layer two-dimensional crystal with only one carbon atom thickness is graphene. The graphite is formed by a layer of honeycomb-like arrangement of planar carbon atoms stacked to form the graphite layer of weak force, it is easy to peel each other to form a thin graphite sheet. Graphene is a new type of two-dimensional planar carbon nanomaterials