Vibrational Spectra of Ruby and Haematite in the Infrared Region

• DOI: 10.1143/jjap.1.1
• Publication Date: 2005-11-04T07:37:47Z
• Authors: Akiyoshi Mitsuishi; Hiroshi Yoshinaga; Shigeru Fujita; Yoshiro Suemoto
• Keywords: Polarizer; Reflection

The reflection and transmission spectra of ruby, pure α–Al 2 O 3 haematite (α–Fe ) were observed in the infrared region from to 200 µ. Six bands found for each compound accordance with conclusion factor group analysis, which predicts two polarized parallel c -axis four perpendicular -axis. By examining spectrum a polyethylene sheet polarizer, polarization character some beyond 17.5 µ was confirmed; but complete assignment six not tried because insufficiency data under due unfavorable orientation crystal surface haematite.