Optically clear LiCaGaF6 (LiCGaF) single crystals up to 15 mm length were grown by the Czochralski method from CaF2 deficient melts. The substance melts incongruently at 751°C. No significant deviations of the crystal composition from the nominal stoichiometry Li:Ca:Ga=1:1:1 could be found. X-ray structure analysis revealed that the substance crystallizes in the colquiriite type structure. LiCaGaF6 is transparent for optical wavelengths >140 - 150 nm. The thermal expansion of the trigonal crystals is ?11 = ?22 = 18.7×10-6 K-1 perpendicular [001] and ?33 = 2.7×10-6 K-1 parallel [001].
Growth and Characterization of LiCaGaF6
Sani E;
2005
Abstract
Optically clear LiCaGaF6 (LiCGaF) single crystals up to 15 mm length were grown by the Czochralski method from CaF2 deficient melts. The substance melts incongruently at 751°C. No significant deviations of the crystal composition from the nominal stoichiometry Li:Ca:Ga=1:1:1 could be found. X-ray structure analysis revealed that the substance crystallizes in the colquiriite type structure. LiCaGaF6 is transparent for optical wavelengths >140 - 150 nm. The thermal expansion of the trigonal crystals is ?11 = ?22 = 18.7×10-6 K-1 perpendicular [001] and ?33 = 2.7×10-6 K-1 parallel [001].File in questo prodotto:
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