Effect of concentrated light on morphology and vibrational properties of boron and tantalum mixtures
Lina Sartinska,
Levan Chkhartishvili,
Eugen Voynich,
Tarik Eren,
Gennadiy Frolov,
Esra Altay,
Ivane Murusidze,
Otar Tsagareishvili,
Domenti Gabunia,
Nodar Maisuradze
Affiliations
Lina Sartinska
Department of High-Temperature Processes & Tests of Materials for Rocket-Space Equipment, I. M. Frantsevich Institute for Problems of Materials Science of NASU, 3 Krzhyzhanovsky Str., Kyiv, 03680, Ukraine; Corresponding author.
Levan Chkhartishvili
Department of Engineering Physics, Georgian Technical University, 77 Kostava Ave., Tbilisi, 0175, Georgia; Laboratory for Boron-Containing & Composite Materials, F. Tavadze Institute of Metallurgy & Materials Science, 10 Mindeli Str., Tbilisi, 0186, Georgia
Eugen Voynich
Department of High-Temperature Processes & Tests of Materials for Rocket-Space Equipment, I. M. Frantsevich Institute for Problems of Materials Science of NASU, 3 Krzhyzhanovsky Str., Kyiv, 03680, Ukraine
Tarik Eren
Chemistry Department, Faculty of Art & Sciences, Yildiz Technical University, Davutpasa Campus, Istanbul, 34220, Esenler, Turkey
Gennadiy Frolov
Department of High-Temperature Processes & Tests of Materials for Rocket-Space Equipment, I. M. Frantsevich Institute for Problems of Materials Science of NASU, 3 Krzhyzhanovsky Str., Kyiv, 03680, Ukraine
Esra Altay
Chemistry Department, Faculty of Art & Sciences, Yildiz Technical University, Davutpasa Campus, Istanbul, 34220, Esenler, Turkey
Ivane Murusidze
Institute of Applied Physics, Ilia State University, 3/5 Cholokashvili Ave., Tbilisi, 0162, Georgia
Otar Tsagareishvili
Laboratory for Boron-Containing & Composite Materials, F. Tavadze Institute of Metallurgy & Materials Science, 10 Mindeli Str., Tbilisi, 0186, Georgia
Domenti Gabunia
Laboratory for Boron-Containing & Composite Materials, F. Tavadze Institute of Metallurgy & Materials Science, 10 Mindeli Str., Tbilisi, 0186, Georgia
Nodar Maisuradze
Department of Engineering Physics, Georgian Technical University, 77 Kostava Ave., Tbilisi, 0175, Georgia
Heating a mixture of boron (impurities: carbon ∼ B50C2, boric acid – H3BO3) and tantalum (Ta) powders in nitrogen flow in a xenon high-flux optical furnace was performed. As-received powder composed of h-BN, H3BO3, TaB2, B9H11 and a number of other phases including β-rhombohedral boron, apparently, heavily doped with Ta. FT–IR examination of any sample of the material reveals the complicated vibration spectrum containing, in particular, an absorption band near 2260 cm−1. The shapes of these bands are different for samples because powders were synthesized at different temperatures. Known, that in β-rhombohedral boron lattice, there are nano-sized voids of different types, which allow an accommodation of single atoms or small groups of atoms. Theoretical calculations performed by the method of quasi-classical type yields the same value, 2260 cm−1, for the vibrations frequency of Ta atoms in D-type crystallographic voids in β-rhombohedral boron lattice. Since, Ta atoms are known to prefer accommodation just in D-voids the experimentally detected bands can be identified with localized vibrations of Ta atoms.
