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首页> 外文期刊>Japanese Journal of Applied Physics. Part 2, Letters >Specific Volume of Fluorine-Doped Silica Glass with Various Fictive Temperatures
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Specific Volume of Fluorine-Doped Silica Glass with Various Fictive Temperatures

机译：不同虚拟温度下掺氟石英玻璃的比容

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摘要

The specific volume of silica glass was measured as a function of fictive temperature and the concentration of fluorine dopant up to 1550℃ and 7.2mol%, respectively. It was found that the relationship between volume and fictive temperature is strongly influenced by the fluorine dopant. The rate of change in volume to change in fictive temperature, which is negative for pure silica glass, increases linearly with increasing fluorine concentration and then becomes positive at the concentration higher than 3.3 mol%. On the other hand, the relationship between fictive temperature and spatially averaged structure, observed by infrared absorption and Raman spectra, is negligibly affected by the dopant. Such a difference between behaviors in the density and in the vibrational spectra indicates the possibility that with varying fictive temperature, a structural change in the local volume around the doped fluorine is much larger than the average structural change over the whole volume in the bulk.
机译：分别测量了石英玻璃的比容与虚拟温度的函数，以及氟掺杂剂的浓度分别高达1550℃和7.2mol％。已经发现，体积与虚拟温度之间的关系受到氟掺杂剂的强烈影响。体积变化率对虚构温度的变化率（对于纯石英玻璃是负的）随氟浓度的增加而线性增加，然后在高于3.3 mol％的浓度时变为正值。另一方面，通过红外吸收和拉曼光谱观察到的虚构温度和空间平均结构之间的关系受掺杂剂的影响可忽略不计。密度和振动谱的行为之间的这种差异表明，随着虚拟温度的变化，掺杂氟周围局部体积的结构变化远大于整个体积中平均结构变化的可能性。

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