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浅谈曼彻斯特理工大学物理系的实验教学 总被引:6,自引:0,他引:6
简要介绍了曼彻斯特理工大学物理系的实验教学概况 ,并对教学中某些有特色之处作了详细的说明 . 相似文献
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线阵CCD的光谱测量 总被引:10,自引:4,他引:6
用线阵CCD作为光栅光谱仪的接收器件,除了可以对光谱的波长进行测量外,还可以对光谱的波形进行比较、分析.而光谱的波形又与波长、积分时间、入射狭缝宽度、衍射角、光源偏离光轴等因素有关,本文分析并研究了这些因素对光谱测量结果的影响. 相似文献
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Temperature dependences of effective perpendicular anisotropy (PA) Ku and inter-face energy Ks for Co/X(Pt, Au, Ag, Ni) multilayer films(MFs) as well as of spontaneous magnetization Ms for Co/Pt and Co/Au MFs are reported. The dependence of Ks on T dis-tinguishes between Go/Au, Co/Ni and Co/Pt, Co/Ag MFs, i.e., Ks of the former decreases with the increase of T, but it increases for the latter. Co/Pt MFs with the perpendicular anisotropy possess a large enhancement of Ms at low temperature, but there is not any en-hancement for Co/Au MFs. We have discussed the source of PA in Co/Au and Co/Pt MFs and speculated that the strain due to the lattice mismatch may be the main cause of PA in Co/Au MFs, but it is not for Co/Pt MFs. 相似文献
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