{"id":{"repo_id":"uiuc","oai_identifier":"oai:www.ideals.illinois.edu:2142/25303"},"canonical_url":"https://search.dev.ndltd.org/etd/uiuc/oai:www.ideals.illinois.edu:2142/25303","repository":{"repo_id":"uiuc","name":"University of Illinois - Urbana-Champaign","base_url":"https://www.ideals.illinois.edu/oai-pmh"},"display":{"title":"Measurements of magnetoresistance in amorphous alloys","abstract":"Magnetoresistance data are presented on amorphous films of Gel Au, 8 Au, -x x 1-x x onto 10K sapphire substrates. Zero-field conductivity measurements show no systematic differences between the materials; magnetoresistance data reveal that the influence of spin-orbit coupling on the conductivity increases with the atomic number of components. The data are discussed in terms of the theories of magnetoresistance of interacting and noninteracting three-dimensional electron gases in the presence of a disordered potential. Although neither localization nor Coulomb-interaction effects can be said to dominate completely the magnetoresistance of any sample, the electron interactions produce strong positive magnetoresistance at low fields in all of the films. In the weakest spin-orbit coupling case, 8 Cu. negative 1-x x magnetoresistance at high fields indicates the importance of electron localization in these materials. Least-squares fits of the functional forms predicted for o(H,T) to the data yield inelastic lifetimes on the order of 10-13s.","abstract_html":"Magnetoresistance data are presented on amorphous films of Gel Au, 8 Au, -x x 1-x x onto 10K sapphire substrates. Zero-field conductivity measurements show no systematic differences between the materials; magnetoresistance data reveal that the influence of spin-orbit coupling on the conductivity increases with the atomic number of components. The data are discussed in terms of the theories of magnetoresistance of interacting and noninteracting three-dimensional electron gases in the presence of a disordered potential. Although neither localization nor Coulomb-interaction effects can be said to dominate completely the magnetoresistance of any sample, the electron interactions produce strong positive magnetoresistance at low fields in all of the films. In the weakest spin-orbit coupling case, 8 Cu. negative 1-x x magnetoresistance at high fields indicates the importance of electron localization in these materials. Least-squares fits of the functional forms predicted for o(H,T) to the data yield inelastic lifetimes on the order of 10-13s.","abstract_has_math":false,"creators":["Tardy, Herbert Louis"],"institution":null,"degree_name":"Ph.D.","degree_level":"Dissertation","degree_discipline":"Physics","degree_department":null,"school":null,"contributors":["Mochel, J.M."],"advisors":[],"committee_chairs":[],"committee_members":[],"year":2011,"date_issued":"2011-06-06T17:58:37Z","date_published":"2011-06-06T17:58:37Z","updated_at":"2026-07-22T22:25:24Z","subjects":["magnetoresistance","amorphous alloys","conductivity","spin-orbit coupling"],"languages":["en"],"rights":["1985 Herbert Louis Tardy"],"rights_urls":[],"identifier_entries":[{"key":"dc:identifier","label":"Identifier","values":["901287"],"render_values":[{"text":"901287","href":null,"code":true}]}]},"links":{"outbound_url":"http://hdl.handle.net/2142/25303","outbound_label":"Handle","outbound_source":"dc:identifier"},"metadata_groups":[{"id":"people","label":"People","entries":[{"key":"dc:contributor","label":"Contributor","values":["Mochel, J.M."]},{"key":"dc:creator","label":"Author","values":["Tardy, Herbert Louis"]}]},{"id":"academic_context","label":"Academic Context","entries":[{"key":"dc:date","label":"Dc Date","values":["2011-06-06T17:58:37Z","10000-01-01","1985"]},{"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":["magnetoresistance","amorphous alloys","conductivity","spin-orbit coupling"]}]},{"id":"language_rights","label":"Language and Rights","entries":[{"key":"dc:language","label":"Dc Language","values":["en"]},{"key":"dc:rights","label":"Dc Rights","values":["1985 Herbert Louis Tardy"]}]},{"id":"identifiers","label":"Identifiers","entries":[{"key":"dc:identifier","label":"Identifier","values":["901287","http://hdl.handle.net/2142/25303"]}]},{"id":"additional","label":"Additional Metadata","entries":[{"key":"dc:description","label":"Description","values":["Magnetoresistance data are presented on amorphous films of Gel Au, 8 Au, -x x 1-x x onto 10K sapphire substrates. Zero-field conductivity measurements show no systematic differences between the materials; magnetoresistance data reveal that the influence of spin-orbit coupling on the conductivity increases with the atomic number of components. The data are discussed in terms of the theories of magnetoresistance of interacting and noninteracting three-dimensional electron gases in the presence of a disordered potential. Although neither localization nor Coulomb-interaction effects can be said to dominate completely the magnetoresistance of any sample, the electron interactions produce strong positive magnetoresistance at low fields in all of the films. In the weakest spin-orbit coupling case, 8 Cu. negative 1-x x magnetoresistance at high fields indicates the importance of electron localization in these materials. Least-squares fits of the functional forms predicted for o(H,T) to the data yield inelastic lifetimes on the order of 10-13s.","Submitted by Carolyn Mead (cmead2@illinois.edu) on 2011-06-06T17:58:37Z No. of bitstreams: 1 1985_tardy.pdf: 3718362 bytes, checksum: 0f072c31af809d5727c6f002d1d7f180 (MD5)","Made available in DSpace on 2011-06-06T17:58:37Z (GMT). No. of bitstreams: 1 1985_tardy.pdf: 3718362 bytes, checksum: 0f072c31af809d5727c6f002d1d7f180 (MD5) Previous issue date: 1985","Item marked as restricted to the 'UIUC Users [automated]' Group (id=2) by Carolyn Mead (cmead2@illinois.edu) on 2011-06-06T17:58:38Z Item is restricted indefinitely.","Restriction data tranferred 2014-07-01T11:15:32-05:00 Original Data Group with Access UIUC Users [automated] Release Date: none Reason: Thesis","Thesis","U of I Only"]},{"key":"dc:title","label":"Title","values":["Measurements of magnetoresistance in amorphous alloys"]}]}],"canonical_facts":{"dc:contributor":["Mochel, J.M."],"dc:creator":["Tardy, Herbert Louis"],"dc:date":["2011-06-06T17:58:37Z","10000-01-01","1985"],"dc:description":["Magnetoresistance data are presented on amorphous films of Gel Au, 8 Au, -x x 1-x x onto 10K sapphire substrates. Zero-field conductivity measurements show no systematic differences between the materials; magnetoresistance data reveal that the influence of spin-orbit coupling on the conductivity increases with the atomic number of components. The data are discussed in terms of the theories of magnetoresistance of interacting and noninteracting three-dimensional electron gases in the presence of a disordered potential. Although neither localization nor Coulomb-interaction effects can be said to dominate completely the magnetoresistance of any sample, the electron interactions produce strong positive magnetoresistance at low fields in all of the films. In the weakest spin-orbit coupling case, 8 Cu. negative 1-x x magnetoresistance at high fields indicates the importance of electron localization in these materials. Least-squares fits of the functional forms predicted for o(H,T) to the data yield inelastic lifetimes on the order of 10-13s.","Submitted by Carolyn Mead (cmead2@illinois.edu) on 2011-06-06T17:58:37Z No. of bitstreams: 1 1985_tardy.pdf: 3718362 bytes, checksum: 0f072c31af809d5727c6f002d1d7f180 (MD5)","Made available in DSpace on 2011-06-06T17:58:37Z (GMT). No. of bitstreams: 1 1985_tardy.pdf: 3718362 bytes, checksum: 0f072c31af809d5727c6f002d1d7f180 (MD5) Previous issue date: 1985","Item marked as restricted to the 'UIUC Users [automated]' Group (id=2) by Carolyn Mead (cmead2@illinois.edu) on 2011-06-06T17:58:38Z Item is restricted indefinitely.","Restriction data tranferred 2014-07-01T11:15:32-05:00 Original Data Group with Access UIUC Users [automated] Release Date: none Reason: Thesis","Thesis","U of I Only"],"dc:identifier":["901287","http://hdl.handle.net/2142/25303"],"dc:language":["en"],"dc:rights":["1985 Herbert Louis Tardy"],"dc:subject":["magnetoresistance","amorphous alloys","conductivity","spin-orbit coupling"],"dc:title":["Measurements of magnetoresistance in amorphous alloys"],"dc:type":["Dissertation / Thesis","text"],"thesis:degree_discipline":["Physics"],"thesis:degree_level":["Dissertation"],"thesis:degree_name":["Ph.D."]},"updated_at":"2026-07-22T22:25:24Z"}