{"@context":{"@vocab":"https://cir.nii.ac.jp/schema/1.0/","rdfs":"http://www.w3.org/2000/01/rdf-schema#","dc":"http://purl.org/dc/elements/1.1/","dcterms":"http://purl.org/dc/terms/","foaf":"http://xmlns.com/foaf/0.1/","prism":"http://prismstandard.org/namespaces/basic/2.0/","cinii":"http://ci.nii.ac.jp/ns/1.0/","datacite":"https://schema.datacite.org/meta/kernel-4/","ndl":"http://ndl.go.jp/dcndl/terms/","jpcoar":"https://github.com/JPCOAR/schema/blob/master/2.0/"},"@id":"https://cir.nii.ac.jp/crid/1390001204190836736.json","@type":"Article","productIdentifier":[{"identifier":{"@type":"DOI","@value":"10.1143/jpsj.39.596"}},{"identifier":{"@type":"COI","@value":"1:CAS:528:DyaE2MXlsFKqtbs%3D"}},{"identifier":{"@type":"BIBCODE","@value":"1975JPSJ...39..596I"}},{"identifier":{"@type":"NDL_BIB_ID","@value":"1617563"}},{"identifier":{"@type":"URI","@value":"http://id.ndl.go.jp/bib/1617563"}},{"identifier":{"@type":"URI","@value":"https://ndlsearch.ndl.go.jp/books/R000000004-I1617563"}},{"identifier":{"@type":"URI","@value":"http://journals.jps.jp/doi/pdf/10.1143/JPSJ.39.596"}},{"identifier":{"@type":"NAID","@value":"210000085445"}},{"identifier":{"@type":"NAID","@value":"110001974994"}},{"identifier":{"@type":"NAID","@value":"130003894581"}}],"dc:title":[{"@language":"en","@value":"Effect of Orbital Degeneracy and Intra-Atomic Exchange on the Occurrence of Ferromagnetism"},{"@language":"ja-Kana","@value":"Effect of Orbital Degeneracy and Intra"}],"dc:language":"en","description":[{"type":"abstract","notation":[{"@language":"en","@value":"The role of orbital degeneracy and intra-atomic exchange for the possible origin of ferromagnetism in transition metals is investigated assuming doubly degenerate bands with intra-atomic Coulomb and exchange interactions. Roth showed in the narrow band limit with one electron per atom that the ground state is ferromagnetic with a superlattice ordering with respect to the orbital states. It is found here that there exist two phase transitions at finite temperatures. At the higher transition temperature only the superlattice ordering of the orbital states appears. The spin susceptibility, which obeys at higher temperatures the antiferromagnetic Curie-Weiss law, is modified by the appearance of this orbital ordering and finally it goes over into a ferromagnetic behavior with the help of intra-atomic exchange. Ferromagnetism thus occurs at the lower transition temperature. This conclusion is suggested in a two-atom system and is confirmed within a molecular field approximation."}],"abstractLicenseFlag":"disallow"}],"creator":[{"@id":"https://cir.nii.ac.jp/crid/1410001204190836736","@type":"Researcher","personIdentifier":[{"@type":"NRID","@value":"9000401836408"},{"@type":"NRID","@value":"9000254551106"}],"foaf:name":[{"@language":"en","@value":"Inagaki Satoru"}],"jpcoar:affiliationName":[{"@language":"en","@value":"Department of Physics, University of Tokyo"}]}],"publication":{"publicationIdentifier":[{"@type":"PISSN","@value":"00319015"},{"@type":"LISSN","@value":"00319015"},{"@type":"EISSN","@value":"13474073"},{"@type":"NDL_BIB_ID","@value":"000000118709"},{"@type":"ISSN","@value":"00319015"},{"@type":"NCID","@value":"AA00704814"}],"prism:publicationName":[{"@language":"en","@value":"Journal of the Physical Society of Japan"},{"@language":"ja","@value":"Ｊｏｕｒｎａｌ　ｏｆ　ｔｈｅ　Ｐｈｙｓｉｃａｌ　Ｓｏｃｉｅｔｙ　ｏｆ　Ｊａｐａｎ"},{"@language":"en","@value":"JOURNAL OF THE PHYSICAL SOCIETY OF JAPAN"},{"@language":"en","@value":"JPSJ"},{"@language":"ja","@value":"ＪＰＳＪ"}],"dc:publisher":[{"@language":"en","@value":"THE PHYSICAL SOCIETY OF JAPAN"},{"@language":"ja","@value":"一般社団法人 日本物理学会"}],"prism:publicationDate":"1975","prism:volume":"39","prism:number":"3","prism:startingPage":"596","prism:endingPage":"604"},"reviewed":"false","url":[{"@id":"http://id.ndl.go.jp/bib/1617563"},{"@id":"https://ndlsearch.ndl.go.jp/books/R000000004-I1617563"},{"@id":"http://journals.jps.jp/doi/pdf/10.1143/JPSJ.39.596"}],"availableAt":"1975","relatedProduct":[{"@id":"https://cir.nii.ac.jp/crid/1360003446872641664","@type":"Article","relationType":["references"],"jpcoar:relatedTitle":[{"@value":"Theory of the Magnetic Properties of Ferrous and Cobaltous Oxides, II"}]},{"@id":"https://cir.nii.ac.jp/crid/1360011143649031168","@type":"Article","relationType":["references"],"jpcoar:relatedTitle":[{"@value":"Thermodynamic Properties of the One-Dimensional Half-Filled-Band Hubbard 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