It must be noted that the main objective of this study was to obtain single crystals of calcium fluoride - CaF2, and after that the crystals were characterized with various spectroscopic methods. The crystals were grown using the Bridgman technique. By optimizing growth conditions, lt 111 gt oriented CaF2 crystals up to 20 mm in diameter were grown. Number of dislocations in CaF2 crystals was 5x10(4) - 2x10(5) per cm(2). Selected CaF2 single crystal is cut into several tiles with the diamond saw. The plates were polished, first with the silicon carbide, then the paraffin oil, and finally with a diamond paste. The obtained crystal w.s studied by Raman and infrared - IR spectroscopy. The crystal structure is confirmed by X-ray diffraction (XRD). One Raman and two IR optical modes predicted by group theory are observed. A low photoluminescence testifies that the concentration of oxygen defects within the host CaF2 is small. All performed investigations show that the obtained CaF2 singl...e crystal has good optical quality, which was the goal of this work.
Keywords:
CaF2 / Raman spectroscopy / IR spectroscopy / Photoluminescence
Source:
Science of Sintering, 2016, 48, 3, 333-341
Publisher:
Međunarodni Institut za nauku o sinterovanju, Beograd
TY - JOUR
AU - Elswie, Hana Ibrahim
AU - Lazarević, Zorica Z.
AU - Radojević, Vesna
AU - Gilić, Martina
AU - Rabasović, Maja S.
AU - Sević, Dragutin M.
AU - Romčević, Nebojša Ž.
PY - 2016
UR - http://TechnoRep.tmf.bg.ac.rs/handle/123456789/3420
AB - It must be noted that the main objective of this study was to obtain single crystals of calcium fluoride - CaF2, and after that the crystals were characterized with various spectroscopic methods. The crystals were grown using the Bridgman technique. By optimizing growth conditions, lt 111 gt oriented CaF2 crystals up to 20 mm in diameter were grown. Number of dislocations in CaF2 crystals was 5x10(4) - 2x10(5) per cm(2). Selected CaF2 single crystal is cut into several tiles with the diamond saw. The plates were polished, first with the silicon carbide, then the paraffin oil, and finally with a diamond paste. The obtained crystal w.s studied by Raman and infrared - IR spectroscopy. The crystal structure is confirmed by X-ray diffraction (XRD). One Raman and two IR optical modes predicted by group theory are observed. A low photoluminescence testifies that the concentration of oxygen defects within the host CaF2 is small. All performed investigations show that the obtained CaF2 single crystal has good optical quality, which was the goal of this work.
PB - Međunarodni Institut za nauku o sinterovanju, Beograd
T2 - Science of Sintering
T1 - The Bridgman Method Growth and Spectroscopic Characterization of Calcium Fluoride Single Crystals
EP - 341
IS - 3
SP - 333
VL - 48
DO - 10.2298/SOS1603333E
ER -
@article{
author = "Elswie, Hana Ibrahim and Lazarević, Zorica Z. and Radojević, Vesna and Gilić, Martina and Rabasović, Maja S. and Sević, Dragutin M. and Romčević, Nebojša Ž.",
year = "2016",
abstract = "It must be noted that the main objective of this study was to obtain single crystals of calcium fluoride - CaF2, and after that the crystals were characterized with various spectroscopic methods. The crystals were grown using the Bridgman technique. By optimizing growth conditions, lt 111 gt oriented CaF2 crystals up to 20 mm in diameter were grown. Number of dislocations in CaF2 crystals was 5x10(4) - 2x10(5) per cm(2). Selected CaF2 single crystal is cut into several tiles with the diamond saw. The plates were polished, first with the silicon carbide, then the paraffin oil, and finally with a diamond paste. The obtained crystal w.s studied by Raman and infrared - IR spectroscopy. The crystal structure is confirmed by X-ray diffraction (XRD). One Raman and two IR optical modes predicted by group theory are observed. A low photoluminescence testifies that the concentration of oxygen defects within the host CaF2 is small. All performed investigations show that the obtained CaF2 single crystal has good optical quality, which was the goal of this work.",
publisher = "Međunarodni Institut za nauku o sinterovanju, Beograd",
journal = "Science of Sintering",
title = "The Bridgman Method Growth and Spectroscopic Characterization of Calcium Fluoride Single Crystals",
pages = "341-333",
number = "3",
volume = "48",
doi = "10.2298/SOS1603333E"
}
Elswie, H. I., Lazarević, Z. Z., Radojević, V., Gilić, M., Rabasović, M. S., Sević, D. M.,& Romčević, N. Ž.. (2016). The Bridgman Method Growth and Spectroscopic Characterization of Calcium Fluoride Single Crystals. in Science of Sintering
Međunarodni Institut za nauku o sinterovanju, Beograd., 48(3), 333-341.
https://doi.org/10.2298/SOS1603333E
Elswie HI, Lazarević ZZ, Radojević V, Gilić M, Rabasović MS, Sević DM, Romčević NŽ. The Bridgman Method Growth and Spectroscopic Characterization of Calcium Fluoride Single Crystals. in Science of Sintering. 2016;48(3):333-341.
doi:10.2298/SOS1603333E .
Elswie, Hana Ibrahim, Lazarević, Zorica Z., Radojević, Vesna, Gilić, Martina, Rabasović, Maja S., Sević, Dragutin M., Romčević, Nebojša Ž., "The Bridgman Method Growth and Spectroscopic Characterization of Calcium Fluoride Single Crystals" in Science of Sintering, 48, no. 3 (2016):333-341,
https://doi.org/10.2298/SOS1603333E . .
