ISSN:
1573-7357
Source:
Springer Online Journal Archives 1860-2000
Topics:
Physics
Notes:
Abstract We report an investigation of the intrinsic properties of vibrating wires made of different materials at low temperatures ≈ 10 mK〈T 〈400 mK) and at high magnetic fieldsB ≤ 11.5 T). The aim of this study was to find a material with sufficiently low intrinsic damping even in the highest fields to allow accurate viscometry in highly diluted spin-polarized 3 He- 4 He solutions. A thorough theoretical treatment of the behaviour of vibrating wires (with a high quality factor) in high magnetic fields is presented. Experimental data obtained for NbTi, Ta, W, Ag, manganin and PtW are analyzed within the framework of this theoretical description. Measurements of the field- and temperature dependence of the shift of the resonance frequency and of the internal friction of the vibrating wires clearly indicate that PtW is the most suitable amongst the materials investigated for vibrating wire viscometry in quantum liquids in high magnetic fields.
Type of Medium:
Electronic Resource
URL:
http://dx.doi.org/10.1023/A:1022316317073
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