{"id":{"repo_id":"uiuc","oai_identifier":"oai:www.ideals.illinois.edu:2142/25842"},"canonical_url":"https://search.dev.ndltd.org/etd/uiuc/oai:www.ideals.illinois.edu:2142/25842","repository":{"repo_id":"uiuc","name":"University of Illinois - Urbana-Champaign","base_url":"https://www.ideals.illinois.edu/oai-pmh"},"display":{"title":"Specific heat of the order-disorder transition in beta-brass and its relation to the Ising Model","abstract":"\"The specific heat Cp of beta-brass near its order-disorder transition has been measured with very high resolution. An ac calorimetry technique was used to make these measurements on ~-brass samples of varying composition. Cv Was then determined from Cp by use of the Pippard relations. The similarity between Cv and various Ising model calculations was found to be quite remarkable. Thus, the possible presence of relatively long-range pairwise interactions has no appreciable effect on the critical behavior of beta-brass's specific heat. The Cv results provide no verification of the \"\"scaling-law\"\" prediction a = a'. However, the Cp data do suggest the possibility of a' assuming its true critical behavior only ~ close to the critical temperature Tc. This could then explain why the a = a' equality has been so difficult to confirm experimentally.\"","abstract_html":""The specific heat Cp of beta-brass near its order-disorder transition has been measured with very high resolution. An ac calorimetry technique was used to make these measurements on ~-brass samples of varying composition. Cv Was then determined from Cp by use of the Pippard relations. The similarity between Cv and various Ising model calculations was found to be quite remarkable. Thus, the possible presence of relatively long-range pairwise interactions has no appreciable effect on the critical behavior of beta-brass's specific heat. The Cv results provide no verification of the ""scaling-law"" prediction a = a'. However, the Cp data do suggest the possibility of a' assuming its true critical behavior only ~ close to the critical temperature Tc. This could then explain why the a = a' equality has been so difficult to confirm experimentally."","abstract_has_math":false,"creators":["Ashman, John Ernst"],"institution":null,"degree_name":"Ph.D.","degree_level":"Dissertation","degree_discipline":"Physics","degree_department":null,"school":null,"contributors":["Handler, Paul"],"advisors":[],"committee_chairs":[],"committee_members":[],"year":2011,"date_issued":"2011-07-26T19:00:03Z","date_published":"2011-07-26T19:00:03Z","updated_at":"2026-07-22T22:25:26Z","subjects":["specific heat","order-disorder transition","beta-brass","ising model","ac calorimetry"],"languages":["en"],"rights":["1970 John Ernst Ashman"],"rights_urls":[],"identifier_entries":[{"key":"dc:identifier","label":"Identifier","values":["6059368"],"render_values":[{"text":"6059368","href":null,"code":true}]}]},"links":{"outbound_url":"http://hdl.handle.net/2142/25842","outbound_label":"Handle","outbound_source":"dc:identifier"},"metadata_groups":[{"id":"people","label":"People","entries":[{"key":"dc:contributor","label":"Contributor","values":["Handler, Paul"]},{"key":"dc:creator","label":"Author","values":["Ashman, John Ernst"]}]},{"id":"academic_context","label":"Academic Context","entries":[{"key":"dc:date","label":"Dc Date","values":["2011-07-26T19:00:03Z","10000-01-01","1970"]},{"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":["specific heat","order-disorder transition","beta-brass","ising model","ac calorimetry"]}]},{"id":"language_rights","label":"Language and Rights","entries":[{"key":"dc:language","label":"Dc Language","values":["en"]},{"key":"dc:rights","label":"Dc Rights","values":["1970 John Ernst Ashman"]}]},{"id":"identifiers","label":"Identifiers","entries":[{"key":"dc:identifier","label":"Identifier","values":["6059368","http://hdl.handle.net/2142/25842"]}]},{"id":"additional","label":"Additional Metadata","entries":[{"key":"dc:description","label":"Description","values":["\"The specific heat Cp of beta-brass near its order-disorder transition has been measured with very high resolution. An ac calorimetry technique was used to make these measurements on ~-brass samples of varying composition. Cv Was then determined from Cp by use of the Pippard relations. The similarity between Cv and various Ising model calculations was found to be quite remarkable. Thus, the possible presence of relatively long-range pairwise interactions has no appreciable effect on the critical behavior of beta-brass's specific heat. The Cv results provide no verification of the \"\"scaling-law\"\" prediction a = a'. However, the Cp data do suggest the possibility of a' assuming its true critical behavior only ~ close to the critical temperature Tc. This could then explain why the a = a' equality has been so difficult to confirm experimentally.\"","Submitted by Carolyn Mead (cmead2@illinois.edu) on 2011-07-26T19:00:03Z No. of bitstreams: 1 1970_ashman.pdf: 2786969 bytes, checksum: ae2ff2a9205efa9690c1e6ea515b70a6 (MD5)","Made available in DSpace on 2011-07-26T19:00:03Z (GMT). No. of bitstreams: 1 1970_ashman.pdf: 2786969 bytes, checksum: ae2ff2a9205efa9690c1e6ea515b70a6 (MD5) Previous issue date: 1970","Restriction data tranferred 2014-07-01T11:32:50-05:00 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 2011-07-26T19:00:03Z Item is restricted indefinitely.","Thesis","U of I Only"]},{"key":"dc:title","label":"Title","values":["Specific heat of the order-disorder transition in beta-brass and its relation to the Ising Model"]}]}],"canonical_facts":{"dc:contributor":["Handler, Paul"],"dc:creator":["Ashman, John Ernst"],"dc:date":["2011-07-26T19:00:03Z","10000-01-01","1970"],"dc:description":["\"The specific heat Cp of beta-brass near its order-disorder transition has been measured with very high resolution. An ac calorimetry technique was used to make these measurements on ~-brass samples of varying composition. Cv Was then determined from Cp by use of the Pippard relations. The similarity between Cv and various Ising model calculations was found to be quite remarkable. Thus, the possible presence of relatively long-range pairwise interactions has no appreciable effect on the critical behavior of beta-brass's specific heat. The Cv results provide no verification of the \"\"scaling-law\"\" prediction a = a'. However, the Cp data do suggest the possibility of a' assuming its true critical behavior only ~ close to the critical temperature Tc. This could then explain why the a = a' equality has been so difficult to confirm experimentally.\"","Submitted by Carolyn Mead (cmead2@illinois.edu) on 2011-07-26T19:00:03Z No. of bitstreams: 1 1970_ashman.pdf: 2786969 bytes, checksum: ae2ff2a9205efa9690c1e6ea515b70a6 (MD5)","Made available in DSpace on 2011-07-26T19:00:03Z (GMT). No. of bitstreams: 1 1970_ashman.pdf: 2786969 bytes, checksum: ae2ff2a9205efa9690c1e6ea515b70a6 (MD5) Previous issue date: 1970","Restriction data tranferred 2014-07-01T11:32:50-05:00 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 2011-07-26T19:00:03Z Item is restricted indefinitely.","Thesis","U of I Only"],"dc:identifier":["6059368","http://hdl.handle.net/2142/25842"],"dc:language":["en"],"dc:rights":["1970 John Ernst Ashman"],"dc:subject":["specific heat","order-disorder transition","beta-brass","ising model","ac calorimetry"],"dc:title":["Specific heat of the order-disorder transition in beta-brass and its relation to the Ising Model"],"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"}