Simultaneous determination of highly precise Debye-Waller factors and structure factors for chemically ordered NiAl.
Accurate Debye-Waller (DW) factors and several low-index structure factors of chemically ordered β-NiAl at different temperatures have been measured using an off-zone-axis multi-beam convergent-beam electron diffraction method. The temperature dependences of DW factors of Ni and Al atoms are compared with previous experimental measurements and theoretical calculations. The temperature below which the DW factor of Ni becomes smaller than that of Al was found to be lower than previously reported. Structure factors are determined with an accuracy of 0.05% and compared with prior reports.
Sang
X H
XH
Department of Materials Science and Mechanical Engineering, Swanson School of Engineering, University of Pittsburgh, 648 Benedum Hall, 3700 O'Hara Street, Pittsburgh, PA 15261, USA. xis20@pitt.edu
Kulovits
A
A
Wiezorek
J M K
JM