{"_buckets": {"deposit": "2e7dbbb1-3086-4463-88c5-8f2f7590c02b"}, "_deposit": {"id": "3599", "owners": [], "pid": {"revision_id": 0, "type": "depid", "value": "3599"}, "status": "published"}, "_oai": {"id": "oai:niigata-u.repo.nii.ac.jp:00003599"}, "item_5_alternative_title_1": {"attribute_name": "\u305d\u306e\u4ed6\u306e\u30bf\u30a4\u30c8\u30eb", "attribute_value_mlt": [{"subitem_alternative_title": "Dependence of Optical Properties on Annealing Process of Transparent Nano-Structured \u03b3-Al2O3 Ceramics"}]}, "item_5_biblio_info_6": {"attribute_name": "\u66f8\u8a8c\u60c5\u5831", "attribute_value_mlt": [{"bibliographicIssueDates": {"bibliographicIssueDate": "2002-12", "bibliographicIssueDateType": "Issued"}, "bibliographicIssueNumber": "12", "bibliographicPageEnd": "1066", "bibliographicPageStart": "1062", "bibliographicVolumeNumber": "110", "bibliographic_titles": [{"bibliographic_title": "\u65e5\u672c\u30bb\u30e9\u30df\u30c3\u30af\u30b9\u5354\u4f1a\u5b66\u8853\u8ad6\u6587\u8a8c"}, {"bibliographic_title": "\u65e5\u672c\u30bb\u30e9\u30df\u30c3\u30af\u30b9\u5354\u4f1a\u5b66\u8853\u8ad6\u6587\u8a8c", "bibliographic_titleLang": "en"}]}]}, "item_5_description_4": {"attribute_name": "\u6284\u9332", "attribute_value_mlt": [{"subitem_description": "Nano-structured \u03b3-Al2O3 ceramics have been pelletized under a pressure of 2.5 GPa on uniaxial compaction of nano-size particles. Although the obtained \u03b3-Al2O3 ceramics show low density, they have a good transparency. For estimating the influence of particle size on the transparency of nano-structured \u03b3-Al2O3 ceramics, nano-sized particles with four different sizes have been used. Nano-structured \u03b3-Al2O3 ceramics made of particles whose size is \u003c 10 nm show a transmittance above 40%. Transmittance decreases with increasing particle diameter. In the case of particle size \u003e20 nm the transmittance is less than 20%. This phenomenon is explained by Rayleigh scattering, which is applicable to a particle diameter much smaller than the wavelength of the incident light. The change in transmittance of nano-structured alumina ceramics on heat treatment is not observed below 1123 K. However the transmittance remarkably decreases at above 1223 K because of rapid grain growths with phase transition, although this temperature is 250 K lower than the \u03b3-\u003e\u03b1-phase transition temperature (1473 K) of bulk alumina. When the sample produced from 11.2 nm particles was heat-treated at 1173 K, the transmittance was maintained for 2 h and then decreased with increasing the annealing time. At this time, the transmittance slowly decreased with gram growth without phase transition between 2 h and 6 h, and then it steeply decreased with grain growth after 6 h with phase transition.", "subitem_description_type": "Abstract"}]}, "item_5_full_name_3": {"attribute_name": "\u8457\u8005\u5225\u540d", "attribute_value_mlt": [{"nameIdentifiers": [{"nameIdentifier": "43931", "nameIdentifierScheme": "WEKO"}], "names": [{"name": "Noda, Hiroyuki"}]}, {"nameIdentifiers": [{"nameIdentifier": "43932", "nameIdentifierScheme": "WEKO"}], "names": [{"name": "Kim, Hee Joon"}]}]}, "item_5_publisher_7": {"attribute_name": "\u51fa\u7248\u8005", "attribute_value_mlt": [{"subitem_publisher": "\u65e5\u672c\u30bb\u30e9\u30df\u30c3\u30af\u30b9\u5354\u4f1a"}]}, "item_5_rights_15": {"attribute_name": "\u6a29\u5229", "attribute_value_mlt": [{"subitem_rights": "Copyright(C)2002 \u65e5\u672c\u30bb\u30e9\u30df\u30c3\u30af\u30b9\u5354\u4f1a"}]}, "item_5_select_19": {"attribute_name": "\u8457\u8005\u7248\u30d5\u30e9\u30b0", "attribute_value_mlt": [{"subitem_select_item": "publisher"}]}, "item_5_source_id_11": {"attribute_name": "\u66f8\u8a8c\u30ec\u30b3\u30fc\u30c9ID", "attribute_value_mlt": [{"subitem_source_identifier": "AN10040326", "subitem_source_identifier_type": "NCID"}]}, "item_5_source_id_9": {"attribute_name": "ISSN", "attribute_value_mlt": [{"subitem_source_identifier": "09145400", "subitem_source_identifier_type": "ISSN"}]}, "item_creator": {"attribute_name": "\u8457\u8005", "attribute_type": "creator", "attribute_value_mlt": [{"creatorNames": [{"creatorName": "\u91ce\u7530, \u5f18\u4e4b"}], "nameIdentifiers": [{"nameIdentifier": "43929", "nameIdentifierScheme": "WEKO"}]}, {"creatorNames": [{"creatorName": "\u91d1, \u7155\u6fec"}], "nameIdentifiers": [{"nameIdentifier": "43930", "nameIdentifierScheme": "WEKO"}]}]}, "item_files": {"attribute_name": "\u30d5\u30a1\u30a4\u30eb\u60c5\u5831", "attribute_type": "file", "attribute_value_mlt": [{"accessrole": "open_date", "date": [{"dateType": "Available", "dateValue": "2019-07-30"}], "displaytype": "detail", "download_preview_message": "", "file_order": 0, "filename": "110_12_1062-1066.pdf", "filesize": [{"value": "544.1 kB"}], "format": "application/pdf", "future_date_message": "", "is_thumbnail": false, "licensetype": "license_free", "mimetype": "application/pdf", "size": 544100.0, "url": {"label": "110_12_1062-1066.pdf", "url": "https://niigata-u.repo.nii.ac.jp/record/3599/files/110_12_1062-1066.pdf"}, "version_id": "9d1dadb6-891a-40c5-b6fd-950884302b9c"}]}, "item_keyword": {"attribute_name": "\u30ad\u30fc\u30ef\u30fc\u30c9", "attribute_value_mlt": [{"subitem_subject": "Nanostructure", "subitem_subject_scheme": "Other"}, {"subitem_subject": "Rayleigh scattering", "subitem_subject_scheme": "Other"}, {"subitem_subject": "Alumina", "subitem_subject_scheme": "Other"}, {"subitem_subject": "CVD", "subitem_subject_scheme": "Other"}, {"subitem_subject": "Nano-particle", "subitem_subject_scheme": "Other"}, {"subitem_subject": "Translucent ceramics", "subitem_subject_scheme": "Other"}, {"subitem_subject": "Sintering", "subitem_subject_scheme": "Other"}, {"subitem_subject": "Grain growth", "subitem_subject_scheme": "Other"}]}, "item_language": {"attribute_name": "\u8a00\u8a9e", "attribute_value_mlt": [{"subitem_language": "jpn"}]}, "item_resource_type": {"attribute_name": "\u8cc7\u6e90\u30bf\u30a4\u30d7", "attribute_value_mlt": [{"resourcetype": "journal article", "resourceuri": "http://purl.org/coar/resource_type/c_6501"}]}, "item_title": "\u900f\u5149\u6027\u30ca\u30ce\u69cb\u9020\u03b3-Al2O3\u306e\u71b1\u51e6\u7406\u306b\u3088\u308b\u5149\u5b66\u7279\u6027\u5909\u5316", "item_titles": {"attribute_name": "\u30bf\u30a4\u30c8\u30eb", "attribute_value_mlt": [{"subitem_title": "\u900f\u5149\u6027\u30ca\u30ce\u69cb\u9020\u03b3-Al2O3\u306e\u71b1\u51e6\u7406\u306b\u3088\u308b\u5149\u5b66\u7279\u6027\u5909\u5316"}, {"subitem_title": "\u900f\u5149\u6027\u30ca\u30ce\u69cb\u9020\u03b3-Al2O3\u306e\u71b1\u51e6\u7406\u306b\u3088\u308b\u5149\u5b66\u7279\u6027\u5909\u5316", "subitem_title_language": "en"}]}, "item_type_id": "5", "owner": "1", "path": ["453/454", "423/424/425"], "permalink_uri": "http://hdl.handle.net/10191/30430", "pubdate": {"attribute_name": "\u516c\u958b\u65e5", "attribute_value": "2014-11-18"}, "publish_date": "2014-11-18", "publish_status": "0", "recid": "3599", "relation": {}, "relation_version_is_last": true, "title": ["\u900f\u5149\u6027\u30ca\u30ce\u69cb\u9020\u03b3-Al2O3\u306e\u71b1\u51e6\u7406\u306b\u3088\u308b\u5149\u5b66\u7279\u6027\u5909\u5316"], "weko_shared_id": null}