Polarized Raman Scattering in Heavy - Metal Fluoride Glass

• Main Authors: Jiunn - Der Yang, 楊俊得
• Other Authors: Luu - Gen Hwa
• Format: Others
• Language: zh-TW
• Published: 1994
• Online Access: http://ndltd.ncl.edu.tw/handle/41728310011416906442

碩士 === 輔仁大學 === 物理研究所 === 82 === The fluoride glasses based on ZrF4 and/or HfF4 heavy metal exhibit high transparency over the frequency range from UV to the mid - IR . In order to understand the primary mechanisms influencing their infrared transparency , polarized Raman scattering was carried out to study the structure of these glasses . From the peak position of the Raman spectra , we will identify the different types of vibrational motion in the glass .Compare the Raman shift between the glass and the crystalline fluoride , we are able to obtain the coordination number of their structure . The relationship between the low frequency Raman shift( Boson Peak ) and the degree of disorder in glass will be discussed in light of the existing theory .