{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2004:IHKCXWIW4WK4JHUIWVTPICPU32","short_pith_number":"pith:IHKCXWIW","canonical_record":{"source":{"id":"cond-mat/0407613","kind":"arxiv","version":1},"metadata":{"license":"","primary_cat":"cond-mat.mtrl-sci","submitted_at":"2004-07-23T07:22:18Z","cross_cats_sorted":["cond-mat.str-el"],"title_canon_sha256":"c0682a771081bd5dc1e83e933ea6588d6de9aef16a75fac1776d25d6082846de","abstract_canon_sha256":"0c53854638cee3b8617212a1edfafca9aac42a564cb67a9fd278f9786ab3966a"},"schema_version":"1.0"},"canonical_sha256":"41d42bd916e595c49e88b566f409f4de820af42fa0ffd1f11a41507a24fe1e40","source":{"kind":"arxiv","id":"cond-mat/0407613","version":1},"source_aliases":[{"alias_kind":"arxiv","alias_value":"cond-mat/0407613","created_at":"2026-07-04T16:46:40Z"},{"alias_kind":"arxiv_version","alias_value":"cond-mat/0407613v1","created_at":"2026-07-04T16:46:40Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.cond-mat/0407613","created_at":"2026-07-04T16:46:40Z"},{"alias_kind":"pith_short_12","alias_value":"IHKCXWIW4WK4","created_at":"2026-07-04T16:46:40Z"},{"alias_kind":"pith_short_16","alias_value":"IHKCXWIW4WK4JHUI","created_at":"2026-07-04T16:46:40Z"},{"alias_kind":"pith_short_8","alias_value":"IHKCXWIW","created_at":"2026-07-04T16:46:40Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2004:IHKCXWIW4WK4JHUIWVTPICPU32","target":"record","payload":{"canonical_record":{"source":{"id":"cond-mat/0407613","kind":"arxiv","version":1},"metadata":{"license":"","primary_cat":"cond-mat.mtrl-sci","submitted_at":"2004-07-23T07:22:18Z","cross_cats_sorted":["cond-mat.str-el"],"title_canon_sha256":"c0682a771081bd5dc1e83e933ea6588d6de9aef16a75fac1776d25d6082846de","abstract_canon_sha256":"0c53854638cee3b8617212a1edfafca9aac42a564cb67a9fd278f9786ab3966a"},"schema_version":"1.0"},"canonical_sha256":"41d42bd916e595c49e88b566f409f4de820af42fa0ffd1f11a41507a24fe1e40","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-07-04T16:46:40.927514Z","signature_b64":"0cOwhBQLz5jvEn+R6qhopTVY5FJ51KXp0TyK9TguQf+/LDpGAJjJgHJXucSduLsuITjkIpVF8kh4IhQ96/OxBA==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"41d42bd916e595c49e88b566f409f4de820af42fa0ffd1f11a41507a24fe1e40","last_reissued_at":"2026-07-04T16:46:40.927024Z","signature_status":"signed_v1","first_computed_at":"2026-07-04T16:46:40.927024Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"cond-mat/0407613","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":"2026-07-04T16:46:40Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"ufC5EyVdMUQGM48qbSAYv1f6SbQpmGZIaxweEJ0yN8uBJKE80glZqZOGjmAe3Ny+S4iMdtWNgaIVjmRFQ7kPBQ==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-07-05T13:52:45.535528Z"},"content_sha256":"916414414061b0624d4af0c2abedaf08fc23ca015b71dc920decc1c1e09568c2","schema_version":"1.0","event_id":"sha256:916414414061b0624d4af0c2abedaf08fc23ca015b71dc920decc1c1e09568c2"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2004:IHKCXWIW4WK4JHUIWVTPICPU32","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Synthesis, Characterization, and Magnetic Properties of gamma-NaxCoO2 (0.70 < x <0.84)","license":"","headline":"","cross_cats":["cond-mat.str-el"],"primary_cat":"cond-mat.mtrl-sci","authors_text":"E. Takayama-Muromachi, H. Sakurai, N. Tsujii, S. Takenouchi","submitted_at":"2004-07-23T07:22:18Z","abstract_excerpt":"Powder Na$_{x}$CoO$_{2}$ ($0.70\\leq x\\leq 0.84$) samples were synthesized and characterized carefully by X-ray diffraction analysis, inductive-coupled plasma atomic emission spectroscopy, and redox titration. It was proved that $\\gamma$-Na$_{x}$CoO$_{2}$ is formed only in the narrow range of $0.70\\leq x\\leq 0.78$. Nevertheless, the magnetic properties depend strongly on $x$. We found, for the first time, two characteristic features in the magnetic susceptibility of Na$_{0.78}$CoO$_{2}$, a sharp peak at $T_{p}=16$ K and an anomaly at $T_{k}=9$ K, as well as the transition at $T_{c}=22$ K and th"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"cond-mat/0407613","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":""},"integrity":{"clean":true,"summary":{"advisory":0,"critical":0,"by_detector":{},"informational":0},"endpoint":"/pith/cond-mat/0407613/integrity.json","findings":[],"available":true,"detectors_run":[],"snapshot_sha256":"c28c3603d3b5d939e8dc4c7e95fa8dfce3d595e45f758748cecf8e644a296938"},"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":"2026-07-04T16:46:40Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"EcSfJWHcD48eKg3Olb6IUX7x3TAn7OgHjMEbHU5v2zoPMFS0OrGtQG6j/VraERDmTo1Ktl1OGlyZfyX69OqiAw==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-07-05T13:52:45.535962Z"},"content_sha256":"57651c0e3e302d0029a0dc4bd3f67a27e946e4d2bfb78bbccadef5df8ae463e7","schema_version":"1.0","event_id":"sha256:57651c0e3e302d0029a0dc4bd3f67a27e946e4d2bfb78bbccadef5df8ae463e7"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/IHKCXWIW4WK4JHUIWVTPICPU32/bundle.json","state_url":"https://pith.science/pith/IHKCXWIW4WK4JHUIWVTPICPU32/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/IHKCXWIW4WK4JHUIWVTPICPU32/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":"2026-07-05T13:52:45Z","links":{"resolver":"https://pith.science/pith/IHKCXWIW4WK4JHUIWVTPICPU32","bundle":"https://pith.science/pith/IHKCXWIW4WK4JHUIWVTPICPU32/bundle.json","state":"https://pith.science/pith/IHKCXWIW4WK4JHUIWVTPICPU32/state.json","well_known_bundle":"https://pith.science/.well-known/pith/IHKCXWIW4WK4JHUIWVTPICPU32/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2004:IHKCXWIW4WK4JHUIWVTPICPU32","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":"0c53854638cee3b8617212a1edfafca9aac42a564cb67a9fd278f9786ab3966a","cross_cats_sorted":["cond-mat.str-el"],"license":"","primary_cat":"cond-mat.mtrl-sci","submitted_at":"2004-07-23T07:22:18Z","title_canon_sha256":"c0682a771081bd5dc1e83e933ea6588d6de9aef16a75fac1776d25d6082846de"},"schema_version":"1.0","source":{"id":"cond-mat/0407613","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"cond-mat/0407613","created_at":"2026-07-04T16:46:40Z"},{"alias_kind":"arxiv_version","alias_value":"cond-mat/0407613v1","created_at":"2026-07-04T16:46:40Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.cond-mat/0407613","created_at":"2026-07-04T16:46:40Z"},{"alias_kind":"pith_short_12","alias_value":"IHKCXWIW4WK4","created_at":"2026-07-04T16:46:40Z"},{"alias_kind":"pith_short_16","alias_value":"IHKCXWIW4WK4JHUI","created_at":"2026-07-04T16:46:40Z"},{"alias_kind":"pith_short_8","alias_value":"IHKCXWIW","created_at":"2026-07-04T16:46:40Z"}],"graph_snapshots":[{"event_id":"sha256:57651c0e3e302d0029a0dc4bd3f67a27e946e4d2bfb78bbccadef5df8ae463e7","target":"graph","created_at":"2026-07-04T16:46:40Z","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"},"integrity":{"available":true,"clean":true,"detectors_run":[],"endpoint":"/pith/cond-mat/0407613/integrity.json","findings":[],"snapshot_sha256":"c28c3603d3b5d939e8dc4c7e95fa8dfce3d595e45f758748cecf8e644a296938","summary":{"advisory":0,"by_detector":{},"critical":0,"informational":0}},"paper":{"abstract_excerpt":"Powder Na$_{x}$CoO$_{2}$ ($0.70\\leq x\\leq 0.84$) samples were synthesized and characterized carefully by X-ray diffraction analysis, inductive-coupled plasma atomic emission spectroscopy, and redox titration. It was proved that $\\gamma$-Na$_{x}$CoO$_{2}$ is formed only in the narrow range of $0.70\\leq x\\leq 0.78$. Nevertheless, the magnetic properties depend strongly on $x$. We found, for the first time, two characteristic features in the magnetic susceptibility of Na$_{0.78}$CoO$_{2}$, a sharp peak at $T_{p}=16$ K and an anomaly at $T_{k}=9$ K, as well as the transition at $T_{c}=22$ K and th","authors_text":"E. Takayama-Muromachi, H. Sakurai, N. Tsujii, S. Takenouchi","cross_cats":["cond-mat.str-el"],"headline":"","license":"","primary_cat":"cond-mat.mtrl-sci","submitted_at":"2004-07-23T07:22:18Z","title":"Synthesis, Characterization, and Magnetic Properties of gamma-NaxCoO2 (0.70 < x <0.84)"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"cond-mat/0407613","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":"sha256:916414414061b0624d4af0c2abedaf08fc23ca015b71dc920decc1c1e09568c2","target":"record","created_at":"2026-07-04T16:46:40Z","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":"0c53854638cee3b8617212a1edfafca9aac42a564cb67a9fd278f9786ab3966a","cross_cats_sorted":["cond-mat.str-el"],"license":"","primary_cat":"cond-mat.mtrl-sci","submitted_at":"2004-07-23T07:22:18Z","title_canon_sha256":"c0682a771081bd5dc1e83e933ea6588d6de9aef16a75fac1776d25d6082846de"},"schema_version":"1.0","source":{"id":"cond-mat/0407613","kind":"arxiv","version":1}},"canonical_sha256":"41d42bd916e595c49e88b566f409f4de820af42fa0ffd1f11a41507a24fe1e40","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"41d42bd916e595c49e88b566f409f4de820af42fa0ffd1f11a41507a24fe1e40","first_computed_at":"2026-07-04T16:46:40.927024Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-07-04T16:46:40.927024Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"0cOwhBQLz5jvEn+R6qhopTVY5FJ51KXp0TyK9TguQf+/LDpGAJjJgHJXucSduLsuITjkIpVF8kh4IhQ96/OxBA==","signature_status":"signed_v1","signed_at":"2026-07-04T16:46:40.927514Z","signed_message":"canonical_sha256_bytes"},"source_id":"cond-mat/0407613","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:916414414061b0624d4af0c2abedaf08fc23ca015b71dc920decc1c1e09568c2","sha256:57651c0e3e302d0029a0dc4bd3f67a27e946e4d2bfb78bbccadef5df8ae463e7"],"state_sha256":"cf9f8ee767af50b2da226e9d786aa74207efaff757bc54d37f8ba52e7cba4069"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"vwvKUffGTFiXwPrdqD50I78xt0YqIkorD//sIxDHiLkRxyo71t3DhphqE2UejeyImaXi3Aohuj8frcR3821QCw==","signed_message":"bundle_sha256_bytes","signed_at":"2026-07-05T13:52:45.539072Z","bundle_sha256":"4d374355eb4c95e14e2b9b26a1af056b68217e9bdcd928fa0200377a82ef26af"}}