{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2009:UTFIQM4SZ3WKDVK5HDX7KAN7PC","short_pith_number":"pith:UTFIQM4S","canonical_record":{"source":{"id":"0904.1838","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.mtrl-sci","submitted_at":"2009-04-12T04:41:46Z","cross_cats_sorted":["cond-mat.str-el"],"title_canon_sha256":"e194f7b7813502a68efa465feffe13a5ba0d7b8c4d5236b99c6cef5e9364cd9b","abstract_canon_sha256":"8f4a26ecbeb8cd17cd18fc9092d15fac745d98e1ec0d533f371337f2837e4e00"},"schema_version":"1.0"},"canonical_sha256":"a4ca883392ceeca1d55d38eff501bf78a1eccb9e5f3cdcaa880b9fda0ecddf68","source":{"kind":"arxiv","id":"0904.1838","version":1},"source_aliases":[{"alias_kind":"arxiv","alias_value":"0904.1838","created_at":"2026-05-18T04:42:02Z"},{"alias_kind":"arxiv_version","alias_value":"0904.1838v1","created_at":"2026-05-18T04:42:02Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.0904.1838","created_at":"2026-05-18T04:42:02Z"},{"alias_kind":"pith_short_12","alias_value":"UTFIQM4SZ3WK","created_at":"2026-05-18T12:26:02Z"},{"alias_kind":"pith_short_16","alias_value":"UTFIQM4SZ3WKDVK5","created_at":"2026-05-18T12:26:02Z"},{"alias_kind":"pith_short_8","alias_value":"UTFIQM4S","created_at":"2026-05-18T12:26:02Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2009:UTFIQM4SZ3WKDVK5HDX7KAN7PC","target":"record","payload":{"canonical_record":{"source":{"id":"0904.1838","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.mtrl-sci","submitted_at":"2009-04-12T04:41:46Z","cross_cats_sorted":["cond-mat.str-el"],"title_canon_sha256":"e194f7b7813502a68efa465feffe13a5ba0d7b8c4d5236b99c6cef5e9364cd9b","abstract_canon_sha256":"8f4a26ecbeb8cd17cd18fc9092d15fac745d98e1ec0d533f371337f2837e4e00"},"schema_version":"1.0"},"canonical_sha256":"a4ca883392ceeca1d55d38eff501bf78a1eccb9e5f3cdcaa880b9fda0ecddf68","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-18T04:42:02.042939Z","signature_b64":"/bksGqPPLaKIp5e6kdREARBSHm0g8BmbWiU8/ws1Mfg2Zo/aplyB0jmpAyoj/Lpqsl/Tqs0Jcf8lrrqNR2sDAg==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"a4ca883392ceeca1d55d38eff501bf78a1eccb9e5f3cdcaa880b9fda0ecddf68","last_reissued_at":"2026-05-18T04:42:02.042493Z","signature_status":"signed_v1","first_computed_at":"2026-05-18T04:42:02.042493Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"0904.1838","source_version":1,"attestation_state":"computed"},"signer":{"signer_id":"pith.science","signer_type":"pith_registry","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"created_at":"2026-05-18T04:42:02Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"dxFHwJlbkhfe58PD7Yk1OPO0C+iC9buQMt9GrO9DYUgQ57ZNRP3uYS4UvQygXytY4Po15U1/Cc0PGSwWYOYjDw==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-05-25T18:30:55.728965Z"},"content_sha256":"3253757c169de627db551a81abfe4180bd72cb89c6bb68e72aac30e27fef9796","schema_version":"1.0","event_id":"sha256:3253757c169de627db551a81abfe4180bd72cb89c6bb68e72aac30e27fef9796"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2009:UTFIQM4SZ3WKDVK5HDX7KAN7PC","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Electronic structure and magnetism of the diluted magnetic semiconductor Fe-doped ZnO nano-particles","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":["cond-mat.str-el"],"primary_cat":"cond-mat.mtrl-sci","authors_text":"A. Fujimori, A. Tanaka, C. T. Chen, D. J. Huang, D. Karmakar, F.-H. Chang, G. S. Song, H.-J. Lin, H. Yamagami, I. Dasgupta, M. Kobayashi, S. K. Mandal, T. Kataoka, T. K. Nath, T. Ohkochi, T. Okane, Y. Saitoh, Y. Sakamoto, Y. Takeda","submitted_at":"2009-04-12T04:41:46Z","abstract_excerpt":"We have studied the electronic structure of Zn$_{0.9}$Fe$_{0.1}$O nano-particles, which have been reported to show ferromagnetism at room temperature, by x-ray photoemission spectroscopy (XPS), resonant photoemission spectroscopy (RPES), x-ray absorption spectroscopy (XAS) and x-ray magnetic circular dichroism (XMCD). From the experimental and cluster-model calculation results, we find that Fe atoms are predominantly in the Fe$^{3+}$ ionic state with mixture of a small amount of Fe$^{2+}$ and that Fe$^{3+}$ ions are dominant in the surface region of the nano-particles. It is shown that the roo"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"0904.1838","kind":"arxiv","version":1},"verdict":{"id":null,"model_set":{},"created_at":null,"strongest_claim":"","one_line_summary":"","pipeline_version":null,"weakest_assumption":"","pith_extraction_headline":""},"references":{"count":0,"sample":[],"resolved_work":0,"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57","internal_anchors":0},"formal_canon":{"evidence_count":0,"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"author_claims":{"count":0,"strong_count":0,"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"builder_version":"pith-number-builder-2026-05-17-v1"},"verdict_id":null},"signer":{"signer_id":"pith.science","signer_type":"pith_registry","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"created_at":"2026-05-18T04:42:02Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"jvG5h/yZguxaGafoWCY1UMJPdqkPDHT8hD9Z/3qg647ol0rg+nA66ViohNvXf/LeSSLu3O6F8jcYc/uhDD2KCw==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-05-25T18:30:55.729848Z"},"content_sha256":"d249bead438ba9ce11949a54c1e54a29a638861c251dcb678c9727b9180f8412","schema_version":"1.0","event_id":"sha256:d249bead438ba9ce11949a54c1e54a29a638861c251dcb678c9727b9180f8412"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/UTFIQM4SZ3WKDVK5HDX7KAN7PC/bundle.json","state_url":"https://pith.science/pith/UTFIQM4SZ3WKDVK5HDX7KAN7PC/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/UTFIQM4SZ3WKDVK5HDX7KAN7PC/bundle.json","status":"primary"}],"public_keys":[{"key_id":"pith-v1-2026-05","algorithm":"ed25519","format":"raw","public_key_b64":"stVStoiQhXFxp4s2pdzPNoqVNBMojDU/fJ2db5S3CbM=","public_key_hex":"b2d552b68890857171a78b36a5dccf368a953413288c353f7c9d9d6f94b709b3","fingerprint_sha256_b32_first128bits":"RVFV5Z2OI2J3ZUO7ERDEBCYNKS","fingerprint_sha256_hex":"8d4b5ee74e4693bcd1df2446408b0d54","rotates_at":null,"url":"https://pith.science/pith-signing-key.json","notes":"Pith uses this Ed25519 key to sign canonical record SHA-256 digests. Verify with: ed25519_verify(public_key, message=canonical_sha256_bytes, signature=base64decode(signature_b64))."}],"merge_version":"pith-open-graph-merge-v1","built_at":"2026-05-25T18:30:55Z","links":{"resolver":"https://pith.science/pith/UTFIQM4SZ3WKDVK5HDX7KAN7PC","bundle":"https://pith.science/pith/UTFIQM4SZ3WKDVK5HDX7KAN7PC/bundle.json","state":"https://pith.science/pith/UTFIQM4SZ3WKDVK5HDX7KAN7PC/state.json","well_known_bundle":"https://pith.science/.well-known/pith/UTFIQM4SZ3WKDVK5HDX7KAN7PC/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2009:UTFIQM4SZ3WKDVK5HDX7KAN7PC","merge_version":"pith-open-graph-merge-v1","event_count":2,"valid_event_count":2,"invalid_event_count":0,"equivocation_count":0,"current":{"canonical_record":{"metadata":{"abstract_canon_sha256":"8f4a26ecbeb8cd17cd18fc9092d15fac745d98e1ec0d533f371337f2837e4e00","cross_cats_sorted":["cond-mat.str-el"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.mtrl-sci","submitted_at":"2009-04-12T04:41:46Z","title_canon_sha256":"e194f7b7813502a68efa465feffe13a5ba0d7b8c4d5236b99c6cef5e9364cd9b"},"schema_version":"1.0","source":{"id":"0904.1838","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"0904.1838","created_at":"2026-05-18T04:42:02Z"},{"alias_kind":"arxiv_version","alias_value":"0904.1838v1","created_at":"2026-05-18T04:42:02Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.0904.1838","created_at":"2026-05-18T04:42:02Z"},{"alias_kind":"pith_short_12","alias_value":"UTFIQM4SZ3WK","created_at":"2026-05-18T12:26:02Z"},{"alias_kind":"pith_short_16","alias_value":"UTFIQM4SZ3WKDVK5","created_at":"2026-05-18T12:26:02Z"},{"alias_kind":"pith_short_8","alias_value":"UTFIQM4S","created_at":"2026-05-18T12:26:02Z"}],"graph_snapshots":[{"event_id":"sha256:d249bead438ba9ce11949a54c1e54a29a638861c251dcb678c9727b9180f8412","target":"graph","created_at":"2026-05-18T04:42:02Z","signer":{"key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signer_id":"pith.science","signer_type":"pith_registry"},"payload":{"graph_snapshot":{"author_claims":{"count":0,"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57","strong_count":0},"builder_version":"pith-number-builder-2026-05-17-v1","claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"formal_canon":{"evidence_count":0,"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"paper":{"abstract_excerpt":"We have studied the electronic structure of Zn$_{0.9}$Fe$_{0.1}$O nano-particles, which have been reported to show ferromagnetism at room temperature, by x-ray photoemission spectroscopy (XPS), resonant photoemission spectroscopy (RPES), x-ray absorption spectroscopy (XAS) and x-ray magnetic circular dichroism (XMCD). From the experimental and cluster-model calculation results, we find that Fe atoms are predominantly in the Fe$^{3+}$ ionic state with mixture of a small amount of Fe$^{2+}$ and that Fe$^{3+}$ ions are dominant in the surface region of the nano-particles. It is shown that the roo","authors_text":"A. Fujimori, A. Tanaka, C. T. Chen, D. J. Huang, D. Karmakar, F.-H. Chang, G. S. Song, H.-J. Lin, H. Yamagami, I. Dasgupta, M. Kobayashi, S. K. Mandal, T. Kataoka, T. K. Nath, T. Ohkochi, T. Okane, Y. Saitoh, Y. Sakamoto, Y. Takeda","cross_cats":["cond-mat.str-el"],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.mtrl-sci","submitted_at":"2009-04-12T04:41:46Z","title":"Electronic structure and magnetism of the diluted magnetic semiconductor Fe-doped ZnO nano-particles"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"0904.1838","kind":"arxiv","version":1},"verdict":{"created_at":null,"id":null,"model_set":{},"one_line_summary":"","pipeline_version":null,"pith_extraction_headline":"","strongest_claim":"","weakest_assumption":""}},"verdict_id":null}}],"author_attestations":[],"timestamp_anchors":[],"storage_attestations":[],"citation_signatures":[],"replication_records":[],"corrections":[],"mirror_hints":[],"record_created":{"event_id":"sha256:3253757c169de627db551a81abfe4180bd72cb89c6bb68e72aac30e27fef9796","target":"record","created_at":"2026-05-18T04:42:02Z","signer":{"key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signer_id":"pith.science","signer_type":"pith_registry"},"payload":{"attestation_state":"computed","canonical_record":{"metadata":{"abstract_canon_sha256":"8f4a26ecbeb8cd17cd18fc9092d15fac745d98e1ec0d533f371337f2837e4e00","cross_cats_sorted":["cond-mat.str-el"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.mtrl-sci","submitted_at":"2009-04-12T04:41:46Z","title_canon_sha256":"e194f7b7813502a68efa465feffe13a5ba0d7b8c4d5236b99c6cef5e9364cd9b"},"schema_version":"1.0","source":{"id":"0904.1838","kind":"arxiv","version":1}},"canonical_sha256":"a4ca883392ceeca1d55d38eff501bf78a1eccb9e5f3cdcaa880b9fda0ecddf68","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"a4ca883392ceeca1d55d38eff501bf78a1eccb9e5f3cdcaa880b9fda0ecddf68","first_computed_at":"2026-05-18T04:42:02.042493Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T04:42:02.042493Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"/bksGqPPLaKIp5e6kdREARBSHm0g8BmbWiU8/ws1Mfg2Zo/aplyB0jmpAyoj/Lpqsl/Tqs0Jcf8lrrqNR2sDAg==","signature_status":"signed_v1","signed_at":"2026-05-18T04:42:02.042939Z","signed_message":"canonical_sha256_bytes"},"source_id":"0904.1838","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:3253757c169de627db551a81abfe4180bd72cb89c6bb68e72aac30e27fef9796","sha256:d249bead438ba9ce11949a54c1e54a29a638861c251dcb678c9727b9180f8412"],"state_sha256":"ebf05c7631e766f5f1f7f03ac788adb7335da08816b4692055c02ee0787ec448"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"YAoms2dwJbFr8em84Z0RbzWKD9HvMzj+7Wgu4W17aySXoy/wtbG9E36rpDVsSHBujGEdN/jK0vy31cmkZET3Dw==","signed_message":"bundle_sha256_bytes","signed_at":"2026-05-25T18:30:55.733735Z","bundle_sha256":"f7a1e98ac83250f3ed6a14a2992d46ed117ff4f0b766042b500013640910cccf"}}