{"id":{"repo_id":"missouri","oai_identifier":"oai:mospace.umsystem.edu:10355/4121"},"canonical_url":"https://search.dev.ndltd.org/etd/missouri/oai:mospace.umsystem.edu:10355/4121","repository":{"repo_id":"missouri","name":"University of Missouri","base_url":"https://mospace.umsystem.edu/oai/request"},"display":{"title":"Theory of lattice effects on magnetic interactions in solids","abstract":"This dissertation focuses on studying the effect of lattice distortions on the magnetic properties of nickelates and manganites. These two families of materials have great potential in industrial applications in the fields of magnetic (superdense hard-drives, fast memory) and charge storage (batteries). The introduction and methods sections present the main ideas of the dissertation and discuss the various techniques used. Electron-lattice coupling is first examined in chapter three for a two-site model where we estimate the magnitude of the isotope effect on the critical temperature and show that it decreases magnetic exchange. In the next part we study electronic structure and magnetism of NaNiO2 and show that inter-planar exchange is reduced by lattice coupling. In the fifth chapter we examine the magnetic polaron and discuss the effect of static lattice coupling on its binding energy, and find it to further stabilize the polaron.","abstract_html":"This dissertation focuses on studying the effect of lattice distortions on the magnetic properties of nickelates and manganites. These two families of materials have great potential in industrial applications in the fields of magnetic (superdense hard-drives, fast memory) and charge storage (batteries). The introduction and methods sections present the main ideas of the dissertation and discuss the various techniques used. Electron-lattice coupling is first examined in chapter three for a two-site model where we estimate the magnitude of the isotope effect on the critical temperature and show that it decreases magnetic exchange. In the next part we study electronic structure and magnetism of NaNiO2 and show that inter-planar exchange is reduced by lattice coupling. In the fifth chapter we examine the magnetic polaron and discuss the effect of static lattice coupling on its binding energy, and find it to further stabilize the polaron.","abstract_has_math":false,"creators":["Meskine, Hakim, 1972-"],"institution":"University of Missouri--Columbia","degree_name":"Ph. D.","degree_level":"Doctoral","degree_discipline":"Physics and astronomy (MU)","degree_department":null,"school":null,"contributors":[],"advisors":["Satpathy, Sashi Sekhar, 1956-"],"committee_chairs":[],"committee_members":[],"year":2005,"date_issued":"2005","date_published":"2005","updated_at":"2026-07-24T03:09:16Z","subjects":[],"languages":["eng","English"],"rights":["OpenAccess."],"rights_urls":[],"identifier_entries":[{"key":"dc:identifier.uri","label":"Identifier URI","values":["https://doi.org/10.32469/10355/4121"],"render_values":[{"text":"https://doi.org/10.32469/10355/4121","href":"https://doi.org/10.32469/10355/4121","code":true}]}]},"links":{"outbound_url":"https://hdl.handle.net/10355/4121","outbound_label":"Handle","outbound_source":"dc:identifier.uri"},"metadata_groups":[{"id":"people","label":"People","entries":[{"key":"dc:contributor.advisor","label":"Advisor","values":["Satpathy, Sashi Sekhar, 1956-"]},{"key":"dc:creator","label":"Author","values":["Meskine, Hakim, 1972-"]}]},{"id":"academic_context","label":"Academic Context","entries":[{"key":"dc:date.accessioned","label":"Dc Date Accessioned","values":["2010-01-06T21:18:53Z"]},{"key":"dc:date.available","label":"Dc Date Available","values":["2010-01-06T21:18:53Z"]},{"key":"dc:date.issued","label":"Date","values":["2005"]},{"key":"dc:publisher","label":"Institution","values":["University of Missouri--Columbia"]},{"key":"dc:type","label":"Dc Type","values":["Thesis"]},{"key":"thesis:degree_discipline","label":"Discipline","values":["Physics and astronomy (MU)"]},{"key":"thesis:degree_level","label":"Degree Level","values":["Doctoral"]},{"key":"thesis:degree_name","label":"Degree Name","values":["Ph. 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In the fifth chapter we examine the magnetic polaron and discuss the effect of static lattice coupling on its binding energy, and find it to further stabilize the polaron."]},{"key":"dc:title","label":"Title","values":["Theory of lattice effects on magnetic interactions in solids"]}]}],"canonical_facts":{"dc:contributor.advisor":["Satpathy, Sashi Sekhar, 1956-"],"dc:creator":["Meskine, Hakim, 1972-"],"dc:date.accessioned":["2010-01-06T21:18:53Z"],"dc:date.available":["2010-01-06T21:18:53Z"],"dc:date.issued":["2005"],"dc:description":["The entire dissertation/thesis text is included in the research.pdf file; the official abstract appears in the short.pdf file (which also appears in the research.pdf); a non-technical general description, or public abstract, appears in the public.pdf file.","Title from title screen of research.pdf file viewed on (November 13, 2006)","Includes bibliographical references.","Vita.","Thesis (Ph. D.) 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In the fifth chapter we examine the magnetic polaron and discuss the effect of static lattice coupling on its binding energy, and find it to further stabilize the polaron."],"dc:identifier.uri":["https://hdl.handle.net/10355/4121","https://doi.org/10.32469/10355/4121"],"dc:language":["English"],"dc:language.iso":["eng"],"dc:publisher":["University of Missouri--Columbia"],"dc:rights":["OpenAccess."],"dc:title":["Theory of lattice effects on magnetic interactions in solids"],"dc:type":["Thesis"],"thesis:degree_discipline":["Physics and astronomy (MU)"],"thesis:degree_level":["Doctoral"],"thesis:degree_name":["Ph. D."],"thesis:institution_name":["University of Missouri--Columbia"]},"updated_at":"2026-07-24T03:09:16Z"}