The resistance minimum in dilute alloys of tin in copper

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Abstract
Previous experimental work on the resistance minimum caused by tin in dilute solid solution in polycrystalline copper led to the expectation that there might be no minimum in similar alloys which were single crystals. We find that this is the case and that the minimum can be produced by making the monocrystalline alloys polycrystalline. It is suggested that the resistance minimum occurs as a result of segregation of the tin atom on the grain boundaries of the polycrystalline alloys. For dilute alloys of iron in copper there was, as expected, practically no difference in the resistance minimum observed in polycrystalline and in monocrystalline alloys.