The structural investigation of low-silica calcium alumino-silicate oxide glasses by infrared reflectivity spectroscopy

• Main Authors: Huang, Hui-Yu, 黃惠鈺
• Other Authors: L. G. Hwa
• Format: Others
• Language: zh-TW
• Published: 2003
• Online Access: http://ndltd.ncl.edu.tw/handle/29723729857202104334

碩士 === 輔仁大學 === 物理學系 === 91 === The structures of low-silica calcium alumino-silicate oxide glasses were investigated by infrared reflectivity. The role of silica in glass network changes with its composition as a function of the ratio of CaO/Al2O3. Kramers-Kronig analysis was performed on IR reflectivity data to extract longitudinal and transverse optic phonon frequencies. In the previous studied of our Ultrasonic measurement, there were a maximum velocity in the glass with 15mol% silica. These were different from the maximum of Tg model studied by Higby. In order to distinguish the role of silica from the glass network as various contents of silica, we tried to synthesize Infrared spectra, Raman spectra and Ultrasonic measurement to get further information.