Magnetization measurements near the superconducting transition temperature

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dc.contributor.advisorRorschach, Harold E., Jr.en_US
dc.creatorWells, Charles Allieen_US
dc.date.accessioned2016-04-22T21:58:51Zen_US
dc.date.available2016-04-22T21:58:51Zen_US
dc.date.issued1967en_US
dc.description.abstractThe thermodynamically reversible phase transition of a metal into a superconducting state has a critical field curve, which can be represented by: The difference in the specific heat of the two phases is given by These equations predict a first order phase transition in a magnetic field and a second order transition in zero field. A singularity in the specific heat at Tc, similar to the singularity for liquid heldum at the -point due to the onset of long range order, would mean that A system of measuring the magnetization of a superconductor in an applied field has been constructed and utilized to determine the critical field curve near The system consists of a closed superconducting loop enclosing the sample, a nulling solenoid and a magnetometer probe; situated in a region of low nagnetic fields. Magnetization curves have been obtained for a sample of 99.999% pure indium over a temperature range of 3.365°K to 3.398°K. The reversibility of the curves was found to depend on the rate at which the magnetic field was applied. The critical temperature was found to be 3.409°K. The slope (dHc/dT) for measurements made was -150 oe./°K. The agreement between values found from this experiment and previous work was reasonable. There was no indication of a singularity in the temperature range investigated. [see PDF for formulas]en_US
dc.format.digitalOriginreformatted digitalen_US
dc.format.extent39 ppen_US
dc.identifier.callnoThesis Phys. 1967 Wellsen_US
dc.identifier.citationWells, Charles Allie. "Magnetization measurements near the superconducting transition temperature." (1967) Master’s Thesis, Rice University. <a href="https://hdl.handle.net/1911/89881">https://hdl.handle.net/1911/89881</a>.en_US
dc.identifier.digitalRICE0915en_US
dc.identifier.urihttps://hdl.handle.net/1911/89881en_US
dc.language.isoengen_US
dc.rightsCopyright is held by the author, unless otherwise indicated. Permission to reuse, publish, or reproduce the work beyond the bounds of fair use or other exemptions to copyright law must be obtained from the copyright holder.en_US
dc.titleMagnetization measurements near the superconducting transition temperatureen_US
dc.typeThesisen_US
dc.type.materialTexten_US
thesis.degree.departmentPhysicsen_US
thesis.degree.disciplineNatural Sciencesen_US
thesis.degree.grantorRice Universityen_US
thesis.degree.levelMastersen_US
thesis.degree.nameMaster of Artsen_US
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