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Title:Critical field of superconducting aluminum as a function of pressure and temperature above 0.3°K
Author(s):Harris, Erik Preston
Doctoral Committee Chair(s):Mapother, D.E.
Department / Program:Physics
Discipline:Physics
Degree:Ph.D.
Genre:Dissertation
Subject(s):critical field
superconducting aluminum
low-temperature superconducting electronic specific heat
calorimeter
Abstract:The critical field curve of aluminum has been measured from T to 0.30 K, at pressures ranging from 0 to 7200 psi. Using caloric metrically derived values for the low-temperature superconducting electronic specific heat, the data have been extrapolated to T 0, yielding values for Ho and gamma These values and experimental results for Tc are then 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 excellent agreement with previous calorimetric measurements of the thermodynamic properties of superconducting aluminum. The shape of the reduced critical field curve shows no pressure dependence over the range of pressures used. The dependence of Ho, Tc, and gamma on pressure are in fair agreement with previous work by Gross and Olsen.
Issue Date:1967
Genre:Dissertation / Thesis
Type:Text
Language:English
URI:http://hdl.handle.net/2142/25687
Rights Information:1967 Erik Preston Harris
Date Available in IDEALS:2011-07-07
Identifier in Online Catalog:6091189


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