ハルバッハ配列永久磁石磁場に対するHOPGの反磁性磁気力計測と計算

抄録

HOPG (Highly Oriented Pyrolytic Graphite) means highly oriented graphite. The diamagnetic current flowing through the hexagonal mesh plane of the carbon that constitutes this causes the diamagnetism of HOPG. We introduce that the diamagnetic force can be calculated by a model that assumes that the current flowing through the hexagonal mesh surface is a ring current. Furthermore, we show from the measurement and calculation results that the diamagnetic force changes depending on the direction of the magnetic field and the direction of the hexagonal mesh plane of carbon. We show that the combination of HOPG with another HOPG whose carbon hexagonal plane orientation is different by 90 degrees can generate a larger diamagnetic force than one HOPG.