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Isotope effect of manganese and simultaneous impurity diffusion of chromium and zinc in copper
Author(s) -
Rockosch H.J.,
Herzig Ch.
Publication year - 1983
Publication title -
physica status solidi (b)
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.51
H-Index - 109
eISSN - 1521-3951
pISSN - 0370-1972
DOI - 10.1002/pssb.2221190122
Subject(s) - copper , vacancy defect , impurity , zinc , manganese , diffusion , thermal diffusivity , analytical chemistry (journal) , tracer , chemistry , chromium , isotope , lattice diffusion coefficient , valence (chemistry) , kinetic isotope effect , materials science , effective diffusion coefficient , metallurgy , thermodynamics , crystallography , atomic physics , medicine , physics , organic chemistry , chromatography , quantum mechanics , radiology , deuterium , nuclear physics , magnetic resonance imaging
The isotope effect E = 0.310 as a mean value is measured at T = 1200 K for impurity diffusion of 52 Mn/ 54 Mn in copper. The corresponding correlation factor f 2 = 0.36 is relatively small in comparison with the published results of Fe, Co, and Ni in Cu. The small value of f 2 and the faster diffusivity of Mn with regard to self‐diffusion of Cu can be explained by the strong lattice distortions of Mn in Cu. Valence effects are accordingly less important. The frequency ratios for vacancy jumps and the vacancy flow effect are calculated. The free binding enthalpy of the vacancy—impurity complex is estimated. Simultaneously to Mn, the tracer diffusion of 51 Cr and 65 Zn is determined. The different evaporation effects of the tracer are taken into account in the evaluation of the diffusion coefficients.