Abstract

Thermal expansion of SrBi₂B₂O₇ borate was investigated by in situ powder X-ray diffraction in the temperature range from –175 to 25°C. Compositional deformations of Sr_1 – xBa_xBi₂B₂O₇ solid solutions were calculated. The band gaps for solid solutions were determined by the absorption spectroscopy. A similarity of thermal and compositional deformations has been established. These deformations were compared with the crystal structure of Sr_1 – xBa_xBi₂B₂O₇ solid solutions.

中文翻译：

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Sr1 – xBaxBi2B2O7 固溶体的成分变形、吸收光谱和低温 X 射线衍射

摘要

通过原位粉末 X 射线衍射研究了 –175 至 25°C 温度范围内SrBi ₂ B ₂ O ₇硼酸盐的热膨胀。计算了Sr _{1 –  x} Ba _x Bi ₂ B ₂ O _{7固溶体的成分变形。}固溶体的带隙通过吸收光谱测定。热变形和成分变形的相似性已经建立。_{将这些变形与 Sr 1 –  x} Ba _x Bi ₂ B ₂ O ₇固溶体的晶体结构进行比较。