霍尔效应实验中一些问题的分析探讨

针对霍尔效应实验教学过程中,存在的一些教学难点,从实验原理出发,对实验过程中涉及的原理、半导体材料的选取、霍尔系数的计算等关键问题进行系统讨论。通过做图及计算得到了半导体材料的各项霍尔参量。对实验教学及霍尔传感器的设计提供理论和实验指导。     

Effect of Re on stacking fault nucleation under shear strain in Ni by atomistic simulation

The effect of Re on stacking fault(SF) nucleation under shear strain in Ni is investigated using the climbing image nudged elastic band method with a Ni–Al–Re embedded-atom-method potential. A parameter(?Eb sf), the activation energy of SF nucleation under shear strain, is introduced to evaluate the effect of Re on SF nucleation under shear strain. Calculation results show that ?Eb sfdecreases with Re addition, which means that SF nucleation under shear strain in Ni may be enhanced by Re. The atomic structure observation shows that the decrease of ?Eb sfmay be due to the expansion of local structure around the Re atom when SF goes through the Re atom.     

弗兰克-赫兹实验OBE模式教学初探

针对工科近代物理实验教学过程中常常存在的原理理解困难,思路分析不清等难点问题展开讨论。结合先进的OBE教学理念、对实验过程采用量化的BOPPPS进行具体实施。通过不同的计算方法得到了氩原子的第一激发电位,验证了原子存在能级。对大学物理及实验课堂教学提供了一种新的启发模式。