Far-infrared reflection spectra were determined, for the first time, for single crystals of guanidinium aluminium sulphate hexahydrate (GASH) and its solid solution for 5 mol.% chromium isomorph (GCSH). The infrared active transversal and associated longitudinal phonon frequency and the dielectric permittivity functions for E//C and E perpendicular to C have been determined using both Kramers-Kronig analysis and a fitting procedure based on a four-parameter model. The indices of refraction were also measured using the immersion method with Cargille liquid and the results were compared with data obtained by numerical analysis of reflectivity measurements. The optical transmission of the samples were measured in the visible range and three wide energy bands were observed at about 2.6 eV, 3 eV and 4.9 eV for GASH doped with Cr, below the conduction energy zone.
Source:
Journal of Physics: Condensed Matter, 1993, 5, 18, 3039-3048
TY - JOUR
AU - Nikolic, P M
AU - Roys, W B
AU - Maricic, X
AU - Gledhill, G A
AU - Duric, S
AU - Radukic, G
AU - Radisic, V
AU - Mihajlovic, P
AU - Todorović, D. M.
AU - Vasiljević, Dana
PY - 1993
UR - http://cer.ihtm.bg.ac.rs/handle/123456789/3102
AB - Far-infrared reflection spectra were determined, for the first time, for single crystals of guanidinium aluminium sulphate hexahydrate (GASH) and its solid solution for 5 mol.% chromium isomorph (GCSH). The infrared active transversal and associated longitudinal phonon frequency and the dielectric permittivity functions for E//C and E perpendicular to C have been determined using both Kramers-Kronig analysis and a fitting procedure based on a four-parameter model. The indices of refraction were also measured using the immersion method with Cargille liquid and the results were compared with data obtained by numerical analysis of reflectivity measurements. The optical transmission of the samples were measured in the visible range and three wide energy bands were observed at about 2.6 eV, 3 eV and 4.9 eV for GASH doped with Cr, below the conduction energy zone.
PB - IOP Publishing
T2 - Journal of Physics: Condensed Matter
T1 - Optical properties of guanidinium aluminium sulphate hexahydrate (GASH)
VL - 5
IS - 18
SP - 3039
EP - 3048
DO - 10.1088/0953-8984/5/18/026
ER -
@article{
author = "Nikolic, P M and Roys, W B and Maricic, X and Gledhill, G A and Duric, S and Radukic, G and Radisic, V and Mihajlovic, P and Todorović, D. M. and Vasiljević, Dana",
year = "1993",
url = "http://cer.ihtm.bg.ac.rs/handle/123456789/3102",
abstract = "Far-infrared reflection spectra were determined, for the first time, for single crystals of guanidinium aluminium sulphate hexahydrate (GASH) and its solid solution for 5 mol.% chromium isomorph (GCSH). The infrared active transversal and associated longitudinal phonon frequency and the dielectric permittivity functions for E//C and E perpendicular to C have been determined using both Kramers-Kronig analysis and a fitting procedure based on a four-parameter model. The indices of refraction were also measured using the immersion method with Cargille liquid and the results were compared with data obtained by numerical analysis of reflectivity measurements. The optical transmission of the samples were measured in the visible range and three wide energy bands were observed at about 2.6 eV, 3 eV and 4.9 eV for GASH doped with Cr, below the conduction energy zone.",
publisher = "IOP Publishing",
journal = "Journal of Physics: Condensed Matter",
title = "Optical properties of guanidinium aluminium sulphate hexahydrate (GASH)",
volume = "5",
number = "18",
pages = "3039-3048",
doi = "10.1088/0953-8984/5/18/026"
}
Nikolic, P. M., Roys, W. B., Maricic, X., Gledhill, G. A., Duric, S., Radukic, G., Radisic, V., Mihajlovic, P., Todorović, D. M.,& Vasiljević, D. (1993). Optical properties of guanidinium aluminium sulphate hexahydrate (GASH).
Journal of Physics: Condensed Matter
IOP Publishing., 5(18), 3039-3048.
https://doi.org/10.1088/0953-8984/5/18/026
Nikolic P M, Roys W B, Maricic X, Gledhill G A, Duric S, Radukic G, Radisic V, Mihajlovic P, Todorović D. M., Vasiljević Dana, "Optical properties of guanidinium aluminium sulphate hexahydrate (GASH)" Journal of Physics: Condensed Matter, 5, no. 18 (1993):3039-3048,
https://doi.org/10.1088/0953-8984/5/18/026 .
