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Neutron diffraction investigations of thermal atomic displacements in Ta and Ag
Author(s) -
Bashir J.,
Nasir Khan M.,
Khan Q. H.,
Butt N. M.,
Baisheng Z.,
Jilian Y.,
Lan J.,
Chuntang Y.
Publication year - 1994
Publication title -
journal of applied crystallography
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.429
H-Index - 162
ISSN - 1600-5767
DOI - 10.1107/s0021889893009185
Subject(s) - tantalum , neutron diffraction , rietveld refinement , diffraction , thermal , materials science , debye–waller factor , neutron temperature , powder diffraction , scattering , analytical chemistry (journal) , neutron , chemistry , crystallography , thermodynamics , optics , nuclear physics , physics , metallurgy , chromatography
The neutron powder diffraction technique has been used to determine the atomic thermal displacements in Ag and Ta at room temperature. The data were analyzed by the Rietveld profile refinement procedure. The thermal parameters obtained were corrected for the contributions of absorption and thermal diffuse scattering. The Debye–Waller factors were 0.31 (1) and 0.84 (2) Å 2 for tantalum and silver, respectively. The thermal parameters were also determined from the conventional independent integrated intensities. The atomic thermal displacements derived by the two methods do not differ significantly.