Thermal conductivity and electrical resistivity of Nb-Ti (HT-50) as a function of temperature and magnetic field

Measurements have been made of the thermal conductivity and electrical resistivity of wires 10 μm and 112 μm in diameter from a composite superconducting cable and of a bulk sample of Nb-Ti of the HT-50 type. The temperature range of the measurements is 4 K – 25 K and the magnetic field ranges up to...

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Bibliographic Details
Published in:Cryogenics (Guildford) 1981, Vol.21 (1), p.47-50
Main Authors: Dyachkov, E.I., Herzog, R., Khukhareva, I.S., Nichitiu, A.
Format: Article
Language:English
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Summary:Measurements have been made of the thermal conductivity and electrical resistivity of wires 10 μm and 112 μm in diameter from a composite superconducting cable and of a bulk sample of Nb-Ti of the HT-50 type. The temperature range of the measurements is 4 K – 25 K and the magnetic field ranges up to 7 T. It has been found that technical superconductors of the same type (HT-50), but of various geometrical constructions have different values of thermal conductivity, residual resistivity and critical temperature. The thermal conductivity in the superconducting state is field-independent at fields up to 7 T, and it decreases for T > T c with increasing field. The residual resistivity is independent of fields up to 7 T.
ISSN:0011-2275
1879-2235
DOI:10.1016/0011-2275(81)90109-0