INFRARED REFLECTANCE SPECTRA OF LITHIUM BORATE GLASSES
INFRARED REFLECTANCE SPECTRA OF LITHIUM BORATE GLASSES
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DOI：
10.1016/0022-3093(90)91023-k
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发表时间：
1990-12-01
影响因子：
3.5
通讯作者：
CHRYSSIKOS, GD
中科院分区：
文献类型：
--
作者：
KAMITSOS, EI;PATSIS, AP;CHRYSSIKOS, GD
本文测量了锂硼酸盐玻璃(0-73mol%Li2O)在较宽的连续光谱范围内(30-4000 cm−~1)的红外反射光谱，试图系统地研究它们的结构。利用Kramers-Krönig反转对反射数据进行了分析，得到了材料的光学和介电性质。对去卷曲的中红外光谱的研究表明，玻璃网络由不同的硼氧基团组成，其结构和浓度强烈依赖于Li2O的含量。特别令人感兴趣的是远红外不对称吸收谱，它可以由两个不同网络环境中锂离子的振动引起的两个宽谱带很好地模拟。这两个Li+主位分布的存在与硼酸盐网络结构的细节无关，并被认为暗示了离子导电氧化物玻璃的更一般的特征。
The infrared reflectance spectra of lithium borate glasses (0–73 mol% Li2O) have been measured over a broad and continuous spectral range (30–4000 cm−1) in an attempt to study systematically their structure. The reflectance data have been analyzed by Kramers-Krönig inversion to obtain the optical and dielectric properties of the materials. The study of the deconvoluted mid-infrared spectra has revealed a glass network built up of various boron-oxygen groups, with structure and concentration strongly dependent on the Li2O content. Of particular interest was the far-infrared asymmetric absorption profile, which could be well simulated by two broad bands attributed to vibrations of lithium cations in two distinct network environments. The presence of these two Li+-host site distributions was found to be independent of the details of the borate network structure and has been taken to imply a more general characteristics of ionic conducting oxide glasses.