Raman Spectra of Molten NaBF4 to 606°C and 8% NaF‐92% to 503°C
Raman Spectra of Molten NaBF4 to 606°C and 8% NaF‐92% to 503°C
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熔融 NaBF4 至 606°C 和 8% NaF-92% 至 503°C 的拉曼光谱
DOI：
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发表时间：
1971
期刊：
影响因子：
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通讯作者：
G. Boyd
中科院分区：
文献类型：
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作者：
A. Quist;J. Bates;G. Boyd
熔融 NaBF4 样品的拉曼光谱已测量到 606°C，并且使用来自氩离子激光器的 4880-A 辐射进行激发，记录了 NaBF4 中 8 摩尔% NaF 共晶混合物样品的光谱达到 503°。 BF4− 离子在本研究中研究的所有条件下似乎都保持其四面体对称性。 BF4− ν1(a1) 模式的频率随着熔体温度的升高而降低，并且在熔融 NaBF4 和含有 8 摩尔% NaF 的熔体中观察到 ν2(e) 和 ν4(f2) 模式能带的弱不对称特征。对熔融 NaBF4 拉曼光谱的解释不需要假设熔融状态下存在准晶格结构或声子。
The Raman spectra of molten NaBF4 samples have been measured to 606°C, and spectra of samples of the eutectic mixture of 8 mole % NaF in NaBF4 were recorded to 503° using 4880‐A radiation from an argon‐ion laser for excitation. The BF4− ion appeared to retain its tetrahedral symmetry under all the conditions studied in this investigation. The frequency of the ν1(a1) mode of BF4− decreased with increasing melt temperature, and weak, asymmetric features on the bands from the ν2(e) and ν4(f2) modes were observed in molten NaBF4 and in the melts with 8 mole % NaF. The interpretation of the Raman spectra of molten NaBF4 does not require postulating the existence of a quasilattice structure or phonons in the molten state.