{"id":{"repo_id":"uiuc","oai_identifier":"oai:www.ideals.illinois.edu:2142/25687"},"canonical_url":"https://search.dev.ndltd.org/etd/uiuc/oai:www.ideals.illinois.edu:2142/25687","repository":{"repo_id":"uiuc","name":"University of Illinois - Urbana-Champaign","base_url":"https://www.ideals.illinois.edu/oai-pmh"},"display":{"title":"Critical field of superconducting aluminum as a function of pressure and temperature above 0.3°K","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.","abstract_html":"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.","abstract_has_math":false,"creators":["Harris, Erik Preston"],"institution":null,"degree_name":"Ph.D.","degree_level":"Dissertation","degree_discipline":"Physics","degree_department":null,"school":null,"contributors":["Mapother, D.E."],"advisors":[],"committee_chairs":[],"committee_members":[],"year":2011,"date_issued":"2011-07-07T15:20:41Z","date_published":"2011-07-07T15:20:41Z","updated_at":"2026-07-22T22:25:26Z","subjects":["critical field","superconducting aluminum","low-temperature superconducting electronic specific heat","calorimeter"],"languages":["en"],"rights":["1967 Erik Preston Harris"],"rights_urls":[],"identifier_entries":[{"key":"dc:identifier","label":"Identifier","values":["6091189"],"render_values":[{"text":"6091189","href":null,"code":true}]}]},"links":{"outbound_url":"http://hdl.handle.net/2142/25687","outbound_label":"Handle","outbound_source":"dc:identifier"},"metadata_groups":[{"id":"people","label":"People","entries":[{"key":"dc:contributor","label":"Contributor","values":["Mapother, D.E."]},{"key":"dc:creator","label":"Author","values":["Harris, Erik Preston"]}]},{"id":"academic_context","label":"Academic Context","entries":[{"key":"dc:date","label":"Dc Date","values":["2011-07-07T15:20:41Z","10000-01-01","1967"]},{"key":"dc:type","label":"Dc Type","values":["Dissertation / Thesis","text"]},{"key":"thesis:degree_discipline","label":"Discipline","values":["Physics"]},{"key":"thesis:degree_level","label":"Degree Level","values":["Dissertation"]},{"key":"thesis:degree_name","label":"Degree Name","values":["Ph.D."]}]},{"id":"subjects_keywords","label":"Subjects and Keywords","entries":[{"key":"dc:subject","label":"Dc Subject","values":["critical field","superconducting aluminum","low-temperature superconducting electronic specific heat","calorimeter"]}]},{"id":"language_rights","label":"Language and Rights","entries":[{"key":"dc:language","label":"Dc Language","values":["en"]},{"key":"dc:rights","label":"Dc Rights","values":["1967 Erik Preston Harris"]}]},{"id":"identifiers","label":"Identifiers","entries":[{"key":"dc:identifier","label":"Identifier","values":["6091189","http://hdl.handle.net/2142/25687"]}]},{"id":"additional","label":"Additional Metadata","entries":[{"key":"dc:description","label":"Description","values":["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.","Submitted by Carolyn Mead (cmead2@illinois.edu) on 2011-07-07T15:20:41Z No. of bitstreams: 1 1967_harris.pdf: 2951395 bytes, checksum: 2b8ccb24c433b8a898db1a1a1ae0ca33 (MD5)","Made available in DSpace on 2011-07-07T15:20:41Z (GMT). No. of bitstreams: 1 1967_harris.pdf: 2951395 bytes, checksum: 2b8ccb24c433b8a898db1a1a1ae0ca33 (MD5) Previous issue date: 1967","Restriction data tranferred 2014-07-01T11:32:41-05:00 Original Data Group with Access UIUC Users [automated] Release Date: none Reason: Thesis","Item marked as restricted to the 'UIUC Users [automated]' Group (id=2) by Carolyn Mead (cmead2@illinois.edu) on 2011-07-07T15:20:41Z Item is restricted indefinitely.","Thesis","U of I Only"]},{"key":"dc:title","label":"Title","values":["Critical field of superconducting aluminum as a function of pressure and temperature above 0.3°K"]}]}],"canonical_facts":{"dc:contributor":["Mapother, D.E."],"dc:creator":["Harris, Erik Preston"],"dc:date":["2011-07-07T15:20:41Z","10000-01-01","1967"],"dc:description":["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.","Submitted by Carolyn Mead (cmead2@illinois.edu) on 2011-07-07T15:20:41Z No. of bitstreams: 1 1967_harris.pdf: 2951395 bytes, checksum: 2b8ccb24c433b8a898db1a1a1ae0ca33 (MD5)","Made available in DSpace on 2011-07-07T15:20:41Z (GMT). No. of bitstreams: 1 1967_harris.pdf: 2951395 bytes, checksum: 2b8ccb24c433b8a898db1a1a1ae0ca33 (MD5) Previous issue date: 1967","Restriction data tranferred 2014-07-01T11:32:41-05:00 Original Data Group with Access UIUC Users [automated] Release Date: none Reason: Thesis","Item marked as restricted to the 'UIUC Users [automated]' Group (id=2) by Carolyn Mead (cmead2@illinois.edu) on 2011-07-07T15:20:41Z Item is restricted indefinitely.","Thesis","U of I Only"],"dc:identifier":["6091189","http://hdl.handle.net/2142/25687"],"dc:language":["en"],"dc:rights":["1967 Erik Preston Harris"],"dc:subject":["critical field","superconducting aluminum","low-temperature superconducting electronic specific heat","calorimeter"],"dc:title":["Critical field of superconducting aluminum as a function of pressure and temperature above 0.3°K"],"dc:type":["Dissertation / Thesis","text"],"thesis:degree_discipline":["Physics"],"thesis:degree_level":["Dissertation"],"thesis:degree_name":["Ph.D."]},"updated_at":"2026-07-22T22:25:26Z"}