System Tb–Ni–C at 800 °C. Crystal and electronic structure of TbNiC2 single crystal
Journal Title: Праці Наукового товариства ім. Шевченка - Year 2018, Vol 53, Issue
Abstract
Phase equilibria at 800 °C in the concentration part up to 33.3 at. % Tb of the Tb–Ni–C system were determined. Three ternary compounds Tb11Ni60C6, Tb2Ni5C3 and TbNiC2 have been found to occur at thermodynamically equilibrium conditions. Crystal structure of TbNiC2 was refined by means of a single crystal X-ray diffraction method: structure type CeNiC2, space group Amm2, a = 3.6010(7) Å, b = 4.5110(9) Å, c = 6.046(1) Å, R1 = 2.2 %, wR2 = 5.2 %. Real-space chemical bonding analysis indicates the TbNiC2 compound represents a unique series of ternary carbide structures stabilized by complex interaction of different types of chemical bonding.
Authors and Affiliations
Volodymyr LEVYTSKYY, Pavlo DEMCHENKO, Bogdan KOTUR
Keywords
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