Determination of SRO parameters of α-AgAl from resistivity measurement

Author(s)
Wolfgang Pfeiler, Peter Meisterle, Michael Zehetbauer
Abstract

Results of resistivity measurements on Ag-7.5, 11.5, 15.5 at.% Al show the features of statistical SRO in the Warren-Cowley sense. Therefore the quasichemical concept of mixtures is used to derive SRO parameters from resistivity measurement assuming a linear relation between residual electrical resistivity and first SRO parameter with the proportionality coefficient being independent of temperature. By comparing the change of equilibrium values of resistivity and the change of α1, both as a function of temperature absolute values of α1, are calculated, which are in excellent accordance with values from diffuse X-ray scattering. Further, values of the enthalpy of mixing evaluated from calculated SRO parameters are in satisfying correspondence with calorimetric measurement.

Organisation(s)
Dynamics of Condensed Systems, Physics of Nanostructured Materials
Journal
Acta Metallurgica
Volume
32
Pages
1053-1060
No. of pages
8
DOI
https://doi.org/10.1016/0001-6160(84)90008-7
Publication date
1984
Publication status
Published
Peer reviewed
Yes
Austrian Fields of Science 2012
103018 Materials physics
Portal url
https://ucris.univie.ac.at/portal/en/publications/determination-of-sro-parameters-of-agal-from-resistivity-measurement(33902408-83b3-4264-a8fc-4cef685ef3c8).html