Calculation of the Raman frequency shifts for the α phase of solid oxygen

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• 作者：Hamit Yurtseven^a ; ^{hamit@metu.edu.tr" class="auth_mail" title="E-mail the corresponding author} ; Ozlem Tari^b
• 关键词：Raman frequency shifts ; Volume ; Mode Grü ; neisen parameter ; α-phase ; O2
• 刊名：Optik - International Journal for Light and Electron Optics
• 出版年：2017
• 出版时间：January 2017
• 年：2017
• 卷：128
• 期：Complete
• 页码：113-120
• 全文大小：682 K

文摘

We calculate in this study the Raman frequencies of the two librons and one vibron at various pressures at constant temperatures of 10 K and also at the temperatures of 6 and 18 K by using the volume data from the literature through the mode Grüneisen parameter for the α phase of oxygen.

The Raman frequency shifts calculated for the pressure-induced librons and vibron, agree with the experimental frequency shifts in most cases, in particular at low pressures for α−O₂$\mathrm{<font\; color="red">\alpha </font>}-O_2$. This shows that the Raman frequency shifts can be calculated adequately from the volume by means of the mode Grüneisen parameter using the method given here for the α$\mathrm{<font\; color="red">\alpha </font>}$-phase of oxygen or more generally for molecular solids.