{"created":"2023-06-19T10:26:57.437853+00:00","id":5721,"links":{},"metadata":{"_buckets":{"deposit":"a1ebb6bf-aca7-410f-98d2-3759f22b3ee9"},"_deposit":{"created_by":18,"id":"5721","owners":[18],"pid":{"revision_id":0,"type":"depid","value":"5721"},"status":"published"},"_oai":{"id":"oai:muroran-it.repo.nii.ac.jp:00005721","sets":["46"]},"author_link":["199","25337","25339","25335","25334","25338","25336"],"item_79_biblio_info_10":{"attribute_name":"書誌情報","attribute_value_mlt":[{"bibliographicIssueDates":{"bibliographicIssueDate":"1998-09-15","bibliographicIssueDateType":"Issued"},"bibliographicIssueNumber":"11","bibliographicPageEnd":"6854","bibliographicPageStart":"6844","bibliographicVolumeNumber":"58","bibliographic_titles":[{"bibliographic_title":"Physical review. Third series. B, Condensed matter and materials physics","bibliographic_titleLang":"en"}]}]},"item_79_description_23":{"attribute_name":"フォーマット","attribute_value_mlt":[{"subitem_description":"application/pdf","subitem_description_type":"Other"}]},"item_79_description_7":{"attribute_name":"抄録","attribute_value_mlt":[{"subitem_description":"The thiospinel CuIr2S4 exhibits a temperature-induced metal-insulator (M-I) transition around 226 K, showing hysteresis on heating and cooling, that manifests itself as a gap in the electronic density of state with increasing electrical resistivity at low temperatures. Conversely, CuIr2Se4 remains metallic down to 0.5 K. We have successfully synthesized the spinel-type compound CuIr2(S1-xSex)4 system. In order to see the effect of substitutions of Se at the S sites, we have carried out a systematic experimental study of structural, electrical, and magnetic properties of CuIr2(S1-xSex)4. Mössbauer spectroscopy measurements of 193Ir have been performed for CuIr2S4 and CuIr2Se4. The M-I transition of CuIr2(S1-xSex)4 for x⩽0.15 is accompanied by a structural transformation from tetragonal (low-temperature insulating phase) to cubic (high-temperature metallic phase) symmetry. With increasing Se concentration x, the sharp M-I transition shifts to lower temperature. The resistivity shows a monotonous increase with decreasing temperature for 0.17⩽x⩽0.78 between 4.2 and 300 K, and the metallic state is recovered for x⩾0.80. Magnetic susceptibility measurements show the jump at the M-I transition temperature with hysteresis on heating and cooling. The high-temperature metallic phase of CuIr2S4 shows Pauli paramagnetism, having a density of states at the Fermi level, D(ϵF)=0.67 states/eV atom. The insulating phase at low temperatures exhibits diamagnetism, and there is no localized magnetic moment. The Arrhenius regime is observed for the conductivity with a thermally activated process for 0⩽x⩽0.70 in the insulating phase. There is a general trend toward increasing metallicity with increasing x, which is consistent with the magnetic susceptibility results. A possibility of a two-site model of different valence states for Ir ions in the insulating phase of CuIr2S4 will be discussed on the basis of the Mössbauer data. A phase diagram of temperature versus Se concentration x will be proposed for the CuIr2(S1-xSex)4 system. The mechanism of the M-I transition remains enigmatic and is far from a complete picture","subitem_description_language":"en","subitem_description_type":"Abstract"}]},"item_79_link_17":{"attribute_name":"出版者版へのリンク","attribute_value_mlt":[{"subitem_link_text":"10.1103/PhysRevB.58.6844","subitem_link_url":"https://doi.org/10.1103/PhysRevB.58.6844"}]},"item_79_publisher_11":{"attribute_name":"出版者","attribute_value_mlt":[{"subitem_publisher":"The American Physical Society","subitem_publisher_language":"en"}]},"item_79_relation_15":{"attribute_name":"論文ID（NAID）","attribute_value_mlt":[{"subitem_relation_type":"isIdenticalTo","subitem_relation_type_id":{"subitem_relation_type_id_text":"120000801990","subitem_relation_type_select":"NAID"}}]},"item_79_relation_18":{"attribute_name":"DOI","attribute_value_mlt":[{"subitem_relation_type":"isIdenticalTo","subitem_relation_type_id":{"subitem_relation_type_id_text":"10.1103/PhysRevB.58.6844","subitem_relation_type_select":"DOI"}}]},"item_79_rights_19":{"attribute_name":"権利","attribute_value_mlt":[{"subitem_rights":"© 1998 The American Physical Society","subitem_rights_language":"en"}]},"item_79_source_id_12":{"attribute_name":"ISSN","attribute_value_mlt":[{"subitem_source_identifier":"10980121","subitem_source_identifier_type":"PISSN"}]},"item_79_source_id_14":{"attribute_name":"書誌レコードID","attribute_value_mlt":[{"subitem_source_identifier":"AA11187113","subitem_source_identifier_type":"NCID"}]},"item_79_subject_9":{"attribute_name":"日本十進分類法","attribute_value_mlt":[{"subitem_subject":"428.4","subitem_subject_scheme":"NDC"}]},"item_79_version_type_21":{"attribute_name":"著者版フラグ","attribute_value_mlt":[{"subitem_version_resource":"http://purl.org/coar/version/c_970fb48d4fbd8a85","subitem_version_type":"VoR"}]},"item_access_right":{"attribute_name":"アクセス権","attribute_value_mlt":[{"subitem_access_right":"open access","subitem_access_right_uri":"http://purl.org/coar/access_right/c_abf2"}]},"item_creator":{"attribute_name":"著者","attribute_type":"creator","attribute_value_mlt":[{"creatorAffiliations":[{"affiliationNameIdentifiers":[],"affiliationNames":[{"affiliationName":"","affiliationNameLang":"ja"}]}],"creatorNames":[{"creatorName":"Nagata,  Shoichi","creatorNameLang":"en"},{"creatorName":"永田, 正一","creatorNameLang":"ja"},{"creatorName":"ナガタ, ショウイチ","creatorNameLang":"ja-Kana"}],"familyNames":[{"familyName":"Nagata","familyNameLang":"en"},{"familyName":"永田","familyNameLang":"ja"},{"familyName":"ナガタ","familyNameLang":"ja-Kana"}],"givenNames":[{"givenName":" Shoichi","givenNameLang":"en"},{"givenName":"正一","givenNameLang":"ja"},{"givenName":"ショウイチ","givenNameLang":"ja-Kana"}],"nameIdentifiers":[{"nameIdentifier":"199","nameIdentifierScheme":"WEKO"},{"nameIdentifier":"1000080155936","nameIdentifierScheme":"NRID","nameIdentifierURI":"https://nrid.nii.ac.jp/ja/nrid/1000080155936"}]},{"creatorNames":[{"creatorName":"MATSUMOTO, Nobuhiro","creatorNameLang":"en"}],"nameIdentifiers":[{"nameIdentifier":"25334","nameIdentifierScheme":"WEKO"}]},{"creatorNames":[{"creatorName":"KATO, Yoshiaki","creatorNameLang":"en"}],"nameIdentifiers":[{"nameIdentifier":"25335","nameIdentifierScheme":"WEKO"}]},{"creatorNames":[{"creatorName":"FURUBAYASHI, Takao","creatorNameLang":"en"}],"nameIdentifiers":[{"nameIdentifier":"25336","nameIdentifierScheme":"WEKO"}]},{"creatorNames":[{"creatorName":"MATSUMOTO, Takehiko","creatorNameLang":"en"}],"nameIdentifiers":[{"nameIdentifier":"25337","nameIdentifierScheme":"WEKO"}]},{"creatorNames":[{"creatorName":"SANCHEZ, Jean Pierre","creatorNameLang":"en"}],"nameIdentifiers":[{"nameIdentifier":"25338","nameIdentifierScheme":"WEKO"}]},{"creatorNames":[{"creatorName":"VULLIET, Paul","creatorNameLang":"en"}],"nameIdentifiers":[{"nameIdentifier":"25339","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":"2016-02-15"}],"displaytype":"detail","filename":"PR-B_58_6844.pdf","filesize":[{"value":"273.8 kB"}],"format":"application/pdf","licensetype":"license_note","mimetype":"application/pdf","url":{"label":"PR-B_58_6844.pdf","objectType":"fulltext","url":"https://muroran-it.repo.nii.ac.jp/record/5721/files/PR-B_58_6844.pdf"},"version_id":"0d2e2c70-e27b-4aa4-94d3-27f6488e4636"}]},"item_keyword":{"attribute_name":"キーワード","attribute_value_mlt":[{"subitem_subject":"copper compounds","subitem_subject_language":"en","subitem_subject_scheme":"Other"},{"subitem_subject":"diamagnetic materials","subitem_subject_language":"en","subitem_subject_scheme":"Other"},{"subitem_subject":"electrical resistivity","subitem_subject_language":"en","subitem_subject_scheme":"Other"},{"subitem_subject":"iridium compounds","subitem_subject_language":"en","subitem_subject_scheme":"Other"},{"subitem_subject":"magnetic hysteresis","subitem_subject_language":"en","subitem_subject_scheme":"Other"},{"subitem_subject":"magnetic susceptibility","subitem_subject_language":"en","subitem_subject_scheme":"Other"},{"subitem_subject":"metal-insulator transition","subitem_subject_language":"en","subitem_subject_scheme":"Other"},{"subitem_subject":"Mossbauer effect","subitem_subject_language":"en","subitem_subject_scheme":"Other"},{"subitem_subject":"paramagnetic materials","subitem_subject_language":"en","subitem_subject_scheme":"Other"},{"subitem_subject":"solid-state phase transformations","subitem_subject_language":"en","subitem_subject_scheme":"Other"}]},"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":"Metal-insulator transition in the spinel-type CuIr2(S1-xSex)4 system","item_titles":{"attribute_name":"タイトル","attribute_value_mlt":[{"subitem_title":"Metal-insulator transition in the spinel-type CuIr2(S1-xSex)4 system","subitem_title_language":"en"}]},"item_type_id":"79","owner":"18","path":["46"],"pubdate":{"attribute_name":"PubDate","attribute_value":"2007-09-26"},"publish_date":"2007-09-26","publish_status":"0","recid":"5721","relation_version_is_last":true,"title":["Metal-insulator transition in the spinel-type CuIr2(S1-xSex)4 system"],"weko_creator_id":"18","weko_shared_id":-1},"updated":"2023-10-25T03:42:08.865898+00:00"}