{"record_type":"pith_number_record","schema_url":"https://pith.science/schemas/pith-number/v1.json","pith_number":"pith:2013:OOYG2PBY25GDVOPKRP5NBMW3FF","short_pith_number":"pith:OOYG2PBY","schema_version":"1.0","canonical_sha256":"73b06d3c38d74c3ab9ea8bfad0b2db296a58ea28566203b9032b0b6da508fdc8","source":{"kind":"arxiv","id":"1302.6321","version":1},"attestation_state":"computed","paper":{"title":"Thermal hysteresis of spin reorientation at Morin transition in alkoxide derived hematite nanoparticles","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"cond-mat.mtrl-sci","authors_text":"G.F. Goya, H. Shen, M. Veith, R. Rapalavicuite, S. Mathur","submitted_at":"2013-02-26T05:52:23Z","abstract_excerpt":"We present results on structural and magnetic properties of highly crystalline alpha-Fe2O3 nanoparticles of average size ~200 nm, synthesized from a novel sol-gel method using metal alkoxide precursor. These particles are multi-domain, showing the weak ferromagnetic-antiferromagnetic (WF-AF) transition (i.e., the Morin transition) at T_M = 256(2) K. M\\\"ossbauer measurements revealed a jump in hyperfine parameters at T ~ T_M, which also displays thermal hysteresis upon cooling or heating the sample. The analysis of hyperfine parameters as a function of temperature allowed us to discard temperat"},"verification_status":{"content_addressed":true,"pith_receipt":true,"author_attested":false,"weak_author_claims":0,"strong_author_claims":0,"externally_anchored":false,"storage_verified":false,"citation_signatures":0,"replication_records":0,"graph_snapshot":true,"references_resolved":false,"formal_links_present":false},"canonical_record":{"source":{"id":"1302.6321","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.mtrl-sci","submitted_at":"2013-02-26T05:52:23Z","cross_cats_sorted":[],"title_canon_sha256":"f932a2c0d6bee2021070ae0e00f4cebe3a81259fae108f97625d93b75e87b12a","abstract_canon_sha256":"2f90c74b48beea9ba606a64049ac5182feda368f8b70fd345d66fcf28b1e236b"},"schema_version":"1.0"},"receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-18T03:32:30.742690Z","signature_b64":"IOSq3dIvWzbNMiTGnhsOxBJonN546z80mgnZ+zKa9ZyuAINDeem4l9mf2T8CraiaNFZkSZXLIQtaQVbIk2GEAQ==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"73b06d3c38d74c3ab9ea8bfad0b2db296a58ea28566203b9032b0b6da508fdc8","last_reissued_at":"2026-05-18T03:32:30.741865Z","signature_status":"signed_v1","first_computed_at":"2026-05-18T03:32:30.741865Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"graph_snapshot":{"paper":{"title":"Thermal hysteresis of spin reorientation at Morin transition in alkoxide derived hematite nanoparticles","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"cond-mat.mtrl-sci","authors_text":"G.F. Goya, H. Shen, M. Veith, R. Rapalavicuite, S. Mathur","submitted_at":"2013-02-26T05:52:23Z","abstract_excerpt":"We present results on structural and magnetic properties of highly crystalline alpha-Fe2O3 nanoparticles of average size ~200 nm, synthesized from a novel sol-gel method using metal alkoxide precursor. These particles are multi-domain, showing the weak ferromagnetic-antiferromagnetic (WF-AF) transition (i.e., the Morin transition) at T_M = 256(2) K. M\\\"ossbauer measurements revealed a jump in hyperfine parameters at T ~ T_M, which also displays thermal hysteresis upon cooling or heating the sample. The analysis of hyperfine parameters as a function of temperature allowed us to discard temperat"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1302.6321","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"},"aliases":[{"alias_kind":"arxiv","alias_value":"1302.6321","created_at":"2026-05-18T03:32:30.741999+00:00"},{"alias_kind":"arxiv_version","alias_value":"1302.6321v1","created_at":"2026-05-18T03:32:30.741999+00:00"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1302.6321","created_at":"2026-05-18T03:32:30.741999+00:00"},{"alias_kind":"pith_short_12","alias_value":"OOYG2PBY25GD","created_at":"2026-05-18T12:27:54.935989+00:00"},{"alias_kind":"pith_short_16","alias_value":"OOYG2PBY25GDVOPK","created_at":"2026-05-18T12:27:54.935989+00:00"},{"alias_kind":"pith_short_8","alias_value":"OOYG2PBY","created_at":"2026-05-18T12:27:54.935989+00:00"}],"events":[],"event_summary":{},"paper_claims":[],"inbound_citations":{"count":0,"internal_anchor_count":0,"sample":[]},"formal_canon":{"evidence_count":0,"sample":[],"anchors":[]},"links":{"html":"https://pith.science/pith/OOYG2PBY25GDVOPKRP5NBMW3FF","json":"https://pith.science/pith/OOYG2PBY25GDVOPKRP5NBMW3FF.json","graph_json":"https://pith.science/api/pith-number/OOYG2PBY25GDVOPKRP5NBMW3FF/graph.json","events_json":"https://pith.science/api/pith-number/OOYG2PBY25GDVOPKRP5NBMW3FF/events.json","paper":"https://pith.science/paper/OOYG2PBY"},"agent_actions":{"view_html":"https://pith.science/pith/OOYG2PBY25GDVOPKRP5NBMW3FF","download_json":"https://pith.science/pith/OOYG2PBY25GDVOPKRP5NBMW3FF.json","view_paper":"https://pith.science/paper/OOYG2PBY","resolve_alias":"https://pith.science/api/pith-number/resolve?arxiv=1302.6321&json=true","fetch_graph":"https://pith.science/api/pith-number/OOYG2PBY25GDVOPKRP5NBMW3FF/graph.json","fetch_events":"https://pith.science/api/pith-number/OOYG2PBY25GDVOPKRP5NBMW3FF/events.json","actions":{"anchor_timestamp":"https://pith.science/pith/OOYG2PBY25GDVOPKRP5NBMW3FF/action/timestamp_anchor","attest_storage":"https://pith.science/pith/OOYG2PBY25GDVOPKRP5NBMW3FF/action/storage_attestation","attest_author":"https://pith.science/pith/OOYG2PBY25GDVOPKRP5NBMW3FF/action/author_attestation","sign_citation":"https://pith.science/pith/OOYG2PBY25GDVOPKRP5NBMW3FF/action/citation_signature","submit_replication":"https://pith.science/pith/OOYG2PBY25GDVOPKRP5NBMW3FF/action/replication_record"}},"created_at":"2026-05-18T03:32:30.741999+00:00","updated_at":"2026-05-18T03:32:30.741999+00:00"}