Atomic short-range order in CuMn alloys

Author(s)

Roland Reihsner, Wolfgang Pfeiler

Abstract

The establishment of atomic short-range order (SRO) has been investigated in CuMn alloys (5, 8,13,16,20 at. % Mn) by measurement of the electrical resistivity during isochronal and isothermal annealing. An increasing degree of SRO is accompanied by a reduction of resistivity; this effect increases with Mn concentration. For 8,13 and 16 at. % Mn SRO kinetics turn out to deviate significantly from single exponential behavior with a maximum at 13 at. % Mn, whereas at 5 and 20 at. % Mn SRO is adjusted in a single exponential process. For data analysis three methods are used: a sum of two and three exponentials as well as a log-normal spectrum of relaxation times. The strong interaction between second-nearest-neighbor atoms in CuMn seems to be essential for SRO kinetics but of minor importance for the value of SRO-induced resistivity change.

Organisation(s)

Dynamics of Condensed Systems

Journal

Journal of Physics and Chemistry of Solids

Volume

46

Pages

1431–1445

No. of pages

15

ISSN

0022-3697

DOI

https://doi.org/10.1016/0022-3697(85)90083-6

Publication date

1985

Peer reviewed

Yes

Austrian Fields of Science 2012

103009 Solid state physics

Portal url

https://ucrisportal.univie.ac.at/en/publications/atomic-shortrange-order-in-cumn-alloys(4f36545a-d965-402b-8920-b6dc3dc4ac41).html