What question did this study set out to answer?

Determine the impact of wire dimensions on residual resistivity measurements in pure copper and dilute copper alloys at cryogenic temperatures.

November 1, 1971Philosophical magazine

Size effects and the residual resistance of thick wires

View Full Paper

Ask AI

Bookmark

Authors

JAJ. E. A. AldersonThe University of Western Australia CHC. M. HurdInstitute for Microstructural Sciences

Discussion

Member takes

Implication

Experimental study reveals significant size effects on residual resistivity in thick copper wires, explaining widespread discrepancies in reported residual resistance ratio values.

Key Points

Determine the impact of wire dimensions on residual resistivity measurements in pure copper and dilute copper alloys at cryogenic temperatures.
Measured the electrical resistance of pure copper and dilute copper alloy wires between 4.2 K and 16 K.
Tested wire specimens with diameter-to-electron mean free path ratios spanning from 1 to 133.
Demonstrated that size effects notably influence residual resistivity even in thick wires where the diameter exceeds the mean free path by over two orders of magnitude.
Identified uncorrected size effects as the primary cause of wide variations in published residual resistance ratio (RRR) values for nominally identical copper samples.

Cite This Study

Alderson et al. (1971) studied this question.

synapsesocial.com/papers/6a967b98d6c1344eaca6b2bc https://doi.org/10.1080/14786437108217082

View Full Paper

Ask AI

Bookmark

Implication

Experimental study reveals significant size effects on residual resistivity in thick copper wires, explaining widespread discrepancies in reported residual resistance ratio values.

Size effects and the residual resistance of thick wires

Discussion

Member takes

Implication

Key Points

Cite This Study

Size effects and the residual resistance of thick wires

Discussion

Member takes

Implication

Key Points

Cite This Study

Also Consider

Also Consider