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Raman Scattering of Hydrogen Storage Material LiNH2
並列摘要
Phonon Raman spectra of single crystalline LiNH2 have been measured in the temperature range between 3.5 K and 300 K. The observed peaks are well assigned by the polarization dependence of the single crystal, comparing with the first principles calculation. Below 100K five new peaks appear, and it is concluded that these are caused by the freezing of the rotational motion of NH2 molecule. It is found that the vibration energy of the Li motion decreases with decreasing temperature. This result shows that the vibration of Li is highly anharmonic with the large amplitude.
並列關鍵字
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