The Effect of Uniaxial Pressures on the Infrared Spectra of LiNH{sub 4}SO{sub 4} Crystals
Journal Article
·
· Optics and Spectroscopy
- Franko Lviv National University (Ukraine)
- Lviv Polytechnic National University (Ukraine)
The infrared reflection spectra of mechanically free and uniaxially compressed LiNH{sub 4}SO{sub 4} crystals are studied for the first time in the spectral range of 800–1700 сm{sup –1} along three crystallophysical directions. The Kramers–Kronig dispersion relations are used to determine the dispersion and baric dependences of refractive index n and the real ε{sub 1} and imaginary ε{sub 2} parts of the dielectric constant and to calculate the frequencies of longitudinal ω{sub LO} and transverse ω{sub ТO} vibrations, decay constant γ, and oscillator strength f of mechanically free and compressed LiNH{sub 4}SO{sub 4} crystals. The considerable changes observed in the main reflection bands are explained by the effect of uniaxial pressures on the NH{sub 4} and SO{sub 4} tetrahedra.
- OSTI ID:
- 22786550
- Journal Information:
- Optics and Spectroscopy, Journal Name: Optics and Spectroscopy Journal Issue: 2 Vol. 124; ISSN 0030-400X; ISSN OPSUA3
- Country of Publication:
- United States
- Language:
- English
Similar Records
Refractive indices of (NH{sub 4}){sub 2}SO{sub 4} crystals under uniaxial pressure
Kramers-Kronig Analysis of Infrared Reflectance Spectra for Quaternary In{sub x}Al{sub y}Ga{sub 1-x-y}N Alloy
Optical constants of D/sub 2/O in the infrared
Journal Article
·
Sun Mar 15 00:00:00 EDT 2009
· Crystallography Reports
·
OSTI ID:22050845
Kramers-Kronig Analysis of Infrared Reflectance Spectra for Quaternary In{sub x}Al{sub y}Ga{sub 1-x-y}N Alloy
Journal Article
·
Wed Jul 07 00:00:00 EDT 2010
· AIP Conference Proceedings
·
OSTI ID:21415268
Optical constants of D/sub 2/O in the infrared
Journal Article
·
Thu Jun 01 00:00:00 EDT 1978
· J. Opt. Soc. Am.; (United States)
·
OSTI ID:6638112