Room-temperature ferromagnetism observed in Nd-doped In_2O_3 dilute magnetic semiconducting nanowires

Nd-doped In_2O_3 nanowires were fabricated by an Au-catalyzed chemical vapor deposition method.Nd atoms were successfully doped into the In_2O_3 host lattice structure,as revealed by energy dispersive x-ray spectroscopy,x-ray photoelectron spectroscopy,Raman spectroscopy,and x-ray diffraction.Robust room temperature ferromagnetism was observed in Nd-doped In_2O_3 nanowires,which was attributed to the long-range-mediated magnetization among Nd~(3+)-vacancy complexes through percolation-bound magnetic polarons.     

Igor Pro在《大学物理实验》课程中的创新应用——以牛顿环实验为例

使用科学软件对实验数据的有效处理和分析是《大学物理实验》课程的教学培养目标之一。以牛顿环实验为例，介绍了使用Igor Pro能够高效地完成对实验数据的处理以及对实验图像的数据采集和分析，对于培养学生的科学素养和创新能力有很大裨益，而且可以为学生进一步学习和深造奠定良好的基础。同时，由于当前疫情等原因，线上实验课程的重要性也越发突显，使用Igor Pro这类科学软件能更好地展示大学物理实验相关课程知识要点，提升学生线上学习效果。