{"created":"2023-05-15T12:10:02.184421+00:00","id":15686,"links":{},"metadata":{"_buckets":{"deposit":"6d7722fb-5c43-47b5-b7c6-3f025ac02d2b"},"_deposit":{"created_by":19,"id":"15686","owners":[19],"pid":{"revision_id":0,"type":"depid","value":"15686"},"status":"published"},"_oai":{"id":"oai:iwate-u.repo.nii.ac.jp:00015686","sets":["1515:1519"]},"author_link":["94478","94479","94477","94480"],"item_16_biblio_info_7":{"attribute_name":"書誌情報","attribute_value_mlt":[{"bibliographicIssueDates":{"bibliographicIssueDate":"2021","bibliographicIssueDateType":"Issued"},"bibliographicIssueNumber":"6","bibliographicPageEnd":"316","bibliographicPageStart":"309","bibliographicVolumeNumber":"56","bibliographic_titles":[{"bibliographic_title":"低温工学"},{"bibliographic_title":"Journal of Cryogenics and Superconductivity Society of Japan","bibliographic_titleLang":"en"}]}]},"item_16_date_6":{"attribute_name":"登録日","attribute_value_mlt":[{"subitem_date_issued_datetime":"2022-06-02"}]},"item_16_description_12":{"attribute_name":"Abstract","attribute_value_mlt":[{"subitem_description":"We have studied the trapped field properties of the MgB2 bulk superconductors fabricated by various methods. The MgB2 bulks were magnetized by a filed-cooled magnetization (FCM) method using a superconductor coil and a pulsed field magnetization (PFM) method using a copper coil. We firstly obtained a trapped field of 1.5 T at 14 K by FCM for an MgB2 disc bulk (30 mm diameter and 7 mm thickness) with a filling factor of about 50 %, which was fabricated by an in-situ capsule method using a home-made capsule. The trapped field of MgB2 bulk by FCM was enhanced up to 2.9 T by the densification and the enlargement. Such dense MgB2 bulks were fabricated by an in-situ hot isostatic pressing under the pressure of up to 980 MPa or an ex-situ spark plasma sintering by applying uniaxial stress of 50 MPa. An in-situ infiltration method without the physical pressure also produced the dense MgB2 bulks, which trapped a 3 T-class magnetic field. The Ti-doping improved considerably the trapped field by FCM up to 5.6 T at 11.3 K for the triple-stacked Ti-doped MgB2 bulks. The PFM method also produced a Tesla-class MgB2 bulk magnet. The trapped field of 1.1 T at 13 K was obtained for the HIP-processed MgB2 disc bulk (22 mm diameter and 20 mm thickness). A magnetic field of 1.6 T was trapped at 20 K in the MgB2 bulk composite, consisting of two ring-shaped MgB2 bulks sandwiched by four thin copper plates and an inserted soft-iron yoke cylinder, using double PFM using a split-type coil with softiron yokes. We have shown the potential of the MgB2 bulk magnets for the practical superconducting applications.","subitem_description_type":"Other"}]},"item_16_full_name_3":{"attribute_name":"著者別名","attribute_value_mlt":[{"nameIdentifiers":[{"nameIdentifier":"94479","nameIdentifierScheme":"WEKO"}],"names":[{"name":"NAITO, Tomoyuki"}]},{"nameIdentifiers":[{"nameIdentifier":"94480","nameIdentifierScheme":"WEKO"}],"names":[{"name":"FUJISHIRO, Hiroyuki"}]}]},"item_16_link_13":{"attribute_name":"抄録（URL）","attribute_value_mlt":[{"subitem_link_text":"MgB2 超伝導バルク磁石の現状と展望","subitem_link_url":"https://www.jstage.jst.go.jp/article/jcsj/56/6/56_309/_article/-char/ja/"}]},"item_16_publisher_14":{"attribute_name":"出版者","attribute_value_mlt":[{"subitem_publisher":"公益社団法人 低温工学・超電導学会 "}]},"item_16_relation_26":{"attribute_name":"DOI","attribute_value_mlt":[{"subitem_relation_type":"isIdenticalTo","subitem_relation_type_id":{"subitem_relation_type_id_text":"info:doi/10.2221/jcsj.56.309","subitem_relation_type_select":"DOI"}}]},"item_16_rights_18":{"attribute_name":"権利","attribute_value_mlt":[{"subitem_rights":"© 2021 公益社団法人 低温工学・超電導学会"}]},"item_16_source_id_25":{"attribute_name":"NCID","attribute_value_mlt":[{"subitem_source_identifier":"AN00333419","subitem_source_identifier_type":"NCID"}]},"item_16_source_id_9":{"attribute_name":"ISSN","attribute_value_mlt":[{"subitem_source_identifier":"1880-0408","subitem_source_identifier_type":"ISSN"},{"subitem_source_identifier":"0389-2441","subitem_source_identifier_type":"ISSN"}]},"item_16_text_4":{"attribute_name":"著者(機関)","attribute_value_mlt":[{"subitem_text_value":"岩手大学理工学部"},{"subitem_text_value":"岩手大学理工学部"}]},"item_16_version_type_27":{"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_creator":{"attribute_name":"著者","attribute_type":"creator","attribute_value_mlt":[{"creatorNames":[{"creatorName":"内藤, 智之"}],"nameIdentifiers":[{}]},{"creatorNames":[{"creatorName":"藤代, 博之"}],"nameIdentifiers":[{}]}]},"item_files":{"attribute_name":"ファイル情報","attribute_type":"file","attribute_value_mlt":[{"accessrole":"open_date","date":[{"dateType":"Available","dateValue":"2022-06-02"}],"displaytype":"detail","filename":"jcssj-v56n6p309-316.pdf","filesize":[{"value":"1.5 MB"}],"format":"application/pdf","licensetype":"license_note","mimetype":"application/pdf","url":{"label":"jcssj-v56n6p309-316","url":"https://iwate-u.repo.nii.ac.jp/record/15686/files/jcssj-v56n6p309-316.pdf"},"version_id":"be6da135-8d26-482d-86f3-04a9fcc420f0"}]},"item_keyword":{"attribute_name":"キーワード","attribute_value_mlt":[{"subitem_subject":"MgB2 superconductor","subitem_subject_scheme":"Other"},{"subitem_subject":"bulk magnet","subitem_subject_scheme":"Other"},{"subitem_subject":"trapped field","subitem_subject_scheme":"Other"},{"subitem_subject":"field-cooled magnetization","subitem_subject_scheme":"Other"},{"subitem_subject":"pulsed field magnetization","subitem_subject_scheme":"Other"}]},"item_language":{"attribute_name":"言語","attribute_value_mlt":[{"subitem_language":"jpn"}]},"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":"MgB₂ 超伝導バルク磁石の現状と展望","item_titles":{"attribute_name":"タイトル","attribute_value_mlt":[{"subitem_title":"MgB₂ 超伝導バルク磁石の現状と展望"},{"subitem_title":"Present status and future perspective of the MgB₂ superconductor bulk magnets","subitem_title_language":"en"}]},"item_type_id":"16","owner":"19","path":["1519"],"pubdate":{"attribute_name":"公開日","attribute_value":"2022-06-02"},"publish_date":"2022-06-02","publish_status":"0","recid":"15686","relation_version_is_last":true,"title":["MgB₂ 超伝導バルク磁石の現状と展望"],"weko_creator_id":"19","weko_shared_id":-1},"updated":"2023-05-15T12:48:51.566181+00:00"}