{"created":"2021-03-01T06:17:28.442566+00:00","id":922,"links":{},"metadata":{"_buckets":{"deposit":"b15bf310-741b-4996-9769-0d173e0fc6bf"},"_deposit":{"id":"922","owners":[],"pid":{"revision_id":0,"type":"depid","value":"922"},"status":"published"},"_oai":{"id":"oai:repository.dl.itc.u-tokyo.ac.jp:00000922","sets":["176:177:178","9:10:11"]},"item_2_biblio_info_7":{"attribute_name":"書誌情報","attribute_value_mlt":[{"bibliographicIssueDates":{"bibliographicIssueDate":"2016-09-13","bibliographicIssueDateType":"Issued"},"bibliographicIssueNumber":"11","bibliographicVolumeNumber":"94","bibliographic_titles":[{"bibliographic_title":"Physical Review B"}]}]},"item_2_description_5":{"attribute_name":"抄録","attribute_value_mlt":[{"subitem_description":"The family of hole-doped Pr-based perovskite cobaltites, Pr0.5Ca0.5CoO3 and (Pr1−yREy)0.3Ca0.7CoO3 (where RE is rare earth), has recently been found to exhibit simultaneous metal-insulator, spin-state, and valence transitions. We have investigated magnetic-field-induced phase transitions of (Pr1−yYy)0.7Ca0.3CoO3 by means of magnetization measurements at 4.2–100 K up to an ultrahigh magnetic field of 140 T with the chemical pressure varied by y=0.0625, 0.075, 0.1. The observed magnetic-field-induced transitions were found to occur simultaneously with the metal-insulator transitions up to 100 T. The obtained magnetic-field-temperature (B−T) phase diagram and magnetization curves are well analyzed by a spin-crossover model of a single ion with interion interactions. On the other hand, the chemical pressure dependence of the experimentally obtained magnetization change during the phase transition disagrees with the single-ion model when approaching low temperatures. The significant y dependence of the magnetization change at low temperatures may arise from the itinerant magnetism of Co3+ in the paramagnetic metallic phase, where the chemical pressure enhances the exchange splitting by promoting the double-exchange interaction. The observed B−T phase diagrams of (Pr1−yYy)0.7Ca0.3CoO3 are quite contrary to that of LaCoO3, indicating that in (Pr1−yYy)0.7Ca0.3CoO3 the high-field phase possesses higher entropy than the low-field phase, whereas it is the other way around in LaCoO3.","subitem_description_type":"Abstract"}]},"item_2_publisher_20":{"attribute_name":"出版者","attribute_value_mlt":[{"subitem_publisher":"American Physical Society"}]},"item_2_relation_11":{"attribute_name":"DOI","attribute_value_mlt":[{"subitem_relation_type_id":{"subitem_relation_type_id_text":"info:doi/10.1103/PhysRevB.94.115129","subitem_relation_type_select":"DOI"}}]},"item_2_relation_26":{"attribute_name":"異版である","attribute_value_mlt":[{"subitem_relation_type":"isVersionOf","subitem_relation_type_id":{"subitem_relation_type_id_text":"http://dx.doi.org/10.1103/PhysRevB.94.115129","subitem_relation_type_select":"URI"}}]},"item_2_rights_12":{"attribute_name":"権利","attribute_value_mlt":[{"subitem_rights":"©2016 American Physical Society"}]},"item_2_select_14":{"attribute_name":"著者版フラグ","attribute_value_mlt":[{"subitem_select_item":"publisher"}]},"item_2_source_id_8":{"attribute_name":"ISSN","attribute_value_mlt":[{"subitem_source_identifier":"1550235X","subitem_source_identifier_type":"ISSN"}]},"item_2_text_4":{"attribute_name":"著者所属","attribute_value_mlt":[{"subitem_text_value":"Institute for Solid State Physics, University of Tokyo"},{"subitem_text_value":"Faculty of Science and Engineering, Iwate University"}]},"item_creator":{"attribute_name":"著者","attribute_type":"creator","attribute_value_mlt":[{"creatorNames":[{"creatorName":"Ikeda, Akihiko"}],"nameIdentifiers":[{"nameIdentifier":"3729","nameIdentifierScheme":"WEKO"}]},{"creatorNames":[{"creatorName":"Lee, Suyeon"}],"nameIdentifiers":[{"nameIdentifier":"3730","nameIdentifierScheme":"WEKO"}]},{"creatorNames":[{"creatorName":"Terashima, Taku T."}],"nameIdentifiers":[{"nameIdentifier":"3731","nameIdentifierScheme":"WEKO"}]},{"creatorNames":[{"creatorName":"Matsuda, Yasuhiro H."}],"nameIdentifiers":[{"nameIdentifier":"3732","nameIdentifierScheme":"WEKO"}]},{"creatorNames":[{"creatorName":"Tokunaga, Masashi"}],"nameIdentifiers":[{"nameIdentifier":"3733","nameIdentifierScheme":"WEKO"}]},{"creatorNames":[{"creatorName":"Naito, Tomoyuki"}],"nameIdentifiers":[{"nameIdentifier":"3734","nameIdentifierScheme":"WEKO"}]}]},"item_files":{"attribute_name":"ファイル情報","attribute_type":"file","attribute_value_mlt":[{"accessrole":"open_date","date":[{"dateType":"Available","dateValue":"2017-05-30"}],"displaytype":"detail","filename":"PhysRevB.94.115129.pdf","filesize":[{"value":"580.5 kB"}],"format":"application/pdf","licensetype":"license_note","mimetype":"application/pdf","url":{"label":"PhysRevB.94.115129.pdf","url":"https://repository.dl.itc.u-tokyo.ac.jp/record/922/files/PhysRevB.94.115129.pdf"},"version_id":"f47c9d8e-0356-43e4-93c2-5a08a1fbf4e8"}]},"item_language":{"attribute_name":"言語","attribute_value_mlt":[{"subitem_language":"eng"}]},"item_resource_type":{"attribute_name":"資源タイプ","attribute_value_mlt":[{"resourcetype":"journal article","resourceuri":"http://purl.org/coar/resource_type/c_6501"}]},"item_title":"Magnetic-field-induced spin crossover of Y-doped Pr0.7Ca0.3CoO3","item_titles":{"attribute_name":"タイトル","attribute_value_mlt":[{"subitem_title":"Magnetic-field-induced spin crossover of Y-doped Pr0.7Ca0.3CoO3"}]},"item_type_id":"2","owner":"1","path":["11","178"],"pubdate":{"attribute_name":"公開日","attribute_value":"2017-01-10"},"publish_date":"2017-01-10","publish_status":"0","recid":"922","relation_version_is_last":true,"title":["Magnetic-field-induced spin crossover of Y-doped Pr0.7Ca0.3CoO3"],"weko_creator_id":"1","weko_shared_id":2},"updated":"2022-12-19T03:42:08.524036+00:00"}