The critical magnetic field curves of superconducting molybdenum and cadmium above 0.03 degrees K
Hamblen, David Gordon
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https://hdl.handle.net/2142/25804
Description
Title
The critical magnetic field curves of superconducting molybdenum and cadmium above 0.03 degrees K
Author(s)
Hamblen, David Gordon
Issue Date
1969
Doctoral Committee Chair(s)
Mapother, D.E.
Department of Study
Physics
Discipline
Physics
Degree Name
Ph.D.
Degree Level
Dissertation
Keyword(s)
critical magnetic field curves
superconducting molybdenum
superconducting cadmium
Language
en
Abstract
The critical magnetic field curves of molybdenum and cadmium have been measured from T to 0.03 oK, using the critical
c field curve of aluminum as a thermometer. The data, when extrapolated
to T = 0, yield values of H = 96.24 gauss and y = 1.835
o mJ/(mole °K2), for Mo, and H = 28.05 gauss and y = 0.685 mJ/(mole
K2) for Cd. The extrapolation to H = 0 yields T values of
0.9l34°K and 0.5l5°K for Mo and Cd, respectively. These values, together with the experimental data, are used to calculate the superconducting electronic entropy and the deviation of the critical field curve from parabolicity over the entire temperature range. The results show satisfactory agreement with previous measurements, and with Clem's theory of anisotropy.
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