Journal ArticleDOI
Isotope Effect and Divacancies for Self-Diffusion in Copper
Steven J. Rothman,N. L. Peterson +1 more
TLDR
The simultaneous diffusion of 64Cu and 67Cu has been measured in copper single crystals from 890 to 1061 °C and the strength of the isotope effect f ΔK is 0.684 ± 0.014 and is independent of temperature within the experimental error.Abstract:
The simultaneous diffusion of 64Cu and 67Cu has been measured in copper single crystals from 890 to 1061 °C. The strength of the isotope effect f ΔK is 0.684 ± 0.014 and is independent of temperature within the experimental error. This indicates that the contribution of divacancies to self-diffusion in copper is small. The diffusion coefficient of 67Cu in copper single crystals was measured from 700 to 1060 °C and is given by
.
Die gleichzeitige Diffusion von 64Cu und 67Cu wurde im Bereich von 890 bis 1061 °C an Kupfereinkristallen gemessen. Die Grose des Isotopeneffekts f ΔK ergibt sich zu 0,684 ± 0,014 und ist temperaturunabhangig innerhalb der Mesgenauigkeit. Dies bedeutet, das der Beitrag von Doppelleerstellen zur Selbstdiffusion in Kupfer gering ist. Der Diffusionskoeffizient von 67Cu in Kupfereinkristallen wurde im Bereich von 700 bis 1060 °C gemessen und ergibt sich zu
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Citations
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Journal ArticleDOI
Modelling of work hardening and stress saturation in FCC metals
TL;DR: In this paper, a work hardening theory was developed based on a microstructural concept comprising three elements; the cell/subgrain size, the dislocation density inside the cells, ρi, and the cell boundary dislocations density or the sub boundary misorientation.
Journal ArticleDOI
Investigation of point defects in equilibrium concentrations with particular reference to positron annihilation techniques
TL;DR: The use of positron annihilation for determining vacancy formation energies is covered in considerable detail and put into perspective relative to other methods (eg thermal expansion, self diffusion, nuclear magnetic resonance).
Journal ArticleDOI
Electromigration path in Cu thin-film lines
TL;DR: For wide polycrystalline lines, the dominant diffusion mechanism is a mixture of grain boundary and surface diffusion, while in narrow lines (< 1 μm) the dominant mechanism is surface transport as mentioned in this paper.
Journal ArticleDOI
Solute diffusion in dilute alloys
TL;DR: In this article, the authors present a review of the general experimental features of dilute alloy diffusion and show how, through their interrelations, one may confirm or refute proposed mechanisms of diffusion and extract information on jump frequencies and defect properties.
Journal ArticleDOI
Self-diffusion in pure metals☆
TL;DR: In this paper, the authors developed the equations that relate defect properties to measurable diffusion parameters for use in this and the following papers and demonstrated the potential errors inherent in relating high-temperature diffusion data over a limited temperature range to properties of monovacancies.
References
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Journal ArticleDOI
Frequency factors and isotope effects in solid state rate processes
TL;DR: In this paper, it was shown that an effective mass which depends on the direction of the path through the saddle point in configuration space determines the Arrhenius expression's effective frequency.
Journal ArticleDOI
Correlation factors for diffusion in solids. Part 2.—Indirect interstitial mechanism
K. Compaan,Y. Haven +1 more
Isotope Effect in Intermetallic Diffusion.
TL;DR: In this article, it was shown from Vineyard's extension of reaction rate theory that the measured isotope effect is to a good approximation a product of the Bardeen-Herring correlation factor and the fraction of the total translational kinetic energy associated with the diffusing tracer in tracervacancy exchange.
Journal ArticleDOI
Isotope Effect in Intermetallic Diffusion
TL;DR: In this paper, it was shown from Vineyard's extension of reaction rate theory that the measured isotope effect is to a good approximation a product of the Bardeen-Herring correlation factor and the fraction of the total translational kinetic energy associated with the diffusing tracer in tracervacancy exchange.