Abstract
We report on a systematic study of the temperature and magnetic field dependence of the intrinsic damping and the resonance frequency of vibrating wires in magnetic fields up to 11.5T and at temperatures 1 mK<T<250 mK. The aim is to test the applicability of various materials for viscometry in spin polarized3He−4He solutions. The materials investigated are NbTi in the superconducting and normal state, the alloys Manganin and PtW, a gold plated glass wire, and three Ag wires where one has been exposed to a heat treatment. For all samples the impact of the magnetic field on the mechanical proporties of the wires is much larger than any temperature dependent effects.
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