Separate determination of the amplitude of thermal vibrations and static atomic displacements in titanium carbide by neutron diffraction

The amplitude of thermal (dynamic) atomic vibrations and meansquare static atomic displacements in titanium carbide TiC x ( x = 0.97, 0.88, 0.70) have been separately determined by measuring neutron diffraction patterns at two temperatures ( T 1 = 300 K and T 2 = 80 K). The static lattice distortion...

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Bibliographic Details
Published in:Crystallography reports 2011-05, Vol.56 (3), p.470-474
Main Authors: Khidirov, I., Parpiev, A. S.
Format: Article
Language:English
Subjects:
AMPLITUDES
ATOMIC DISPLACEMENTS
CARBON
CONDENSED MATTER PHYSICS, SUPERCONDUCTIVITY AND SUPERFLUIDITY
Crystallography and Scattering Methods
DEBYE TEMPERATURE
Lattice Dynamics and Phase Transitions
NEUTRON DIFFRACTION
Physics
Physics and Astronomy
STOICHIOMETRY
TEMPERATURE RANGE 0065-0273 K
TEMPERATURE RANGE 0273-0400 K
TITANIUM CARBIDES
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Summary:The amplitude of thermal (dynamic) atomic vibrations and meansquare static atomic displacements in titanium carbide TiC x ( x = 0.97, 0.88, 0.70) have been separately determined by measuring neutron diffraction patterns at two temperatures ( T 1 = 300 K and T 2 = 80 K). The static lattice distortions in stoichiometric titanium carbide are experimentally found to be negligible. In the TiC x homogeneity range, the amplitude of thermal atomic vibrations significantly increases with a decrease in the carbon concentration. The Debye temperature has been determined for the first time in the TiC x homogeneity range at both room and liquid-nitrogen temperatures.
ISSN:1063-7745
1562-689X
DOI:10.1134/S1063774511030102