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The resistivity of a ferromagnetic wire with an extension in contact with a superconductor has been measured at various temperatures and magnetic fields. The distance from the ferromagnet to the superconducting contact was fabricated to be 250-400 nm, much larger than the coherence length in the ferromagnet, which was a few nanometres; nevertheless, we found that the resistivity increases at the superconducting transition. The result was obtained for different ferromagnets and superconductors. We establish that the resistivity increase is not due to a redistribution of magnetic domains as a result of the screening of magnetic flux by the superconductor, as suggested recently.

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