{"record_type":"pith_number_record","schema_url":"https://pith.science/schemas/pith-number/v1.json","pith_number":"pith:2010:76NK2PPF4S7STGLL5JZFKLMIHX","short_pith_number":"pith:76NK2PPF","schema_version":"1.0","canonical_sha256":"ff9aad3de5e4bf29996bea72552d883deac9ce9d854cc0b422b8204216ddf379","source":{"kind":"arxiv","id":"1011.4410","version":1},"attestation_state":"computed","paper":{"title":"Phase stability and structural temperature dependence in sodium niobate: A high resolution powder neutron diffraction study","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"cond-mat.mtrl-sci","authors_text":"R. Mittal, S. K. Mishra, S.L. Chaplot, V. Yu. Pomjakushin","submitted_at":"2010-11-19T12:10:12Z","abstract_excerpt":"We report investigation of structural phase transitions in technologically important material sodium niobate as a function of temperature on heating over 300-1075 K. Our high resolution powder neutron diffraction data show variety of structural phase transitions ranging from non-polar antiferrodistortive to ferroelectric and antiferroelectric in nature. Discontinuous jump in lattice parameters is found only at 633 K that indicates that the transition of orthorhombic antiferroelectric P (space group Pbcm) to R (space group Pbnm) phase is first order in nature, while other successive phase trans"},"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":"1011.4410","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.mtrl-sci","submitted_at":"2010-11-19T12:10:12Z","cross_cats_sorted":[],"title_canon_sha256":"7d4dea9d5c9aad5c56fe1dad3a7cf7c6c8346652c4fd689d12693adeac3f9b9a","abstract_canon_sha256":"e086dcbb585e895da9ae6e66ab023e226d434fd7f142871017f51a6e4e94df06"},"schema_version":"1.0"},"receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-18T02:04:43.493246Z","signature_b64":"qV5uMuhP3+Xi0BnI7/uuQeJQpYwpPcjk48hMcQUy5cUcjbf0svVA90eCMmzDJtPEaOqBRPD1ldwvmFyXre7gAw==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"ff9aad3de5e4bf29996bea72552d883deac9ce9d854cc0b422b8204216ddf379","last_reissued_at":"2026-05-18T02:04:43.492494Z","signature_status":"signed_v1","first_computed_at":"2026-05-18T02:04:43.492494Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"graph_snapshot":{"paper":{"title":"Phase stability and structural temperature dependence in sodium niobate: A high resolution powder neutron diffraction study","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"cond-mat.mtrl-sci","authors_text":"R. Mittal, S. K. Mishra, S.L. Chaplot, V. Yu. Pomjakushin","submitted_at":"2010-11-19T12:10:12Z","abstract_excerpt":"We report investigation of structural phase transitions in technologically important material sodium niobate as a function of temperature on heating over 300-1075 K. Our high resolution powder neutron diffraction data show variety of structural phase transitions ranging from non-polar antiferrodistortive to ferroelectric and antiferroelectric in nature. Discontinuous jump in lattice parameters is found only at 633 K that indicates that the transition of orthorhombic antiferroelectric P (space group Pbcm) to R (space group Pbnm) phase is first order in nature, while other successive phase trans"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1011.4410","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":"1011.4410","created_at":"2026-05-18T02:04:43.492616+00:00"},{"alias_kind":"arxiv_version","alias_value":"1011.4410v1","created_at":"2026-05-18T02:04:43.492616+00:00"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1011.4410","created_at":"2026-05-18T02:04:43.492616+00:00"},{"alias_kind":"pith_short_12","alias_value":"76NK2PPF4S7S","created_at":"2026-05-18T12:26:04.259169+00:00"},{"alias_kind":"pith_short_16","alias_value":"76NK2PPF4S7STGLL","created_at":"2026-05-18T12:26:04.259169+00:00"},{"alias_kind":"pith_short_8","alias_value":"76NK2PPF","created_at":"2026-05-18T12:26:04.259169+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/76NK2PPF4S7STGLL5JZFKLMIHX","json":"https://pith.science/pith/76NK2PPF4S7STGLL5JZFKLMIHX.json","graph_json":"https://pith.science/api/pith-number/76NK2PPF4S7STGLL5JZFKLMIHX/graph.json","events_json":"https://pith.science/api/pith-number/76NK2PPF4S7STGLL5JZFKLMIHX/events.json","paper":"https://pith.science/paper/76NK2PPF"},"agent_actions":{"view_html":"https://pith.science/pith/76NK2PPF4S7STGLL5JZFKLMIHX","download_json":"https://pith.science/pith/76NK2PPF4S7STGLL5JZFKLMIHX.json","view_paper":"https://pith.science/paper/76NK2PPF","resolve_alias":"https://pith.science/api/pith-number/resolve?arxiv=1011.4410&json=true","fetch_graph":"https://pith.science/api/pith-number/76NK2PPF4S7STGLL5JZFKLMIHX/graph.json","fetch_events":"https://pith.science/api/pith-number/76NK2PPF4S7STGLL5JZFKLMIHX/events.json","actions":{"anchor_timestamp":"https://pith.science/pith/76NK2PPF4S7STGLL5JZFKLMIHX/action/timestamp_anchor","attest_storage":"https://pith.science/pith/76NK2PPF4S7STGLL5JZFKLMIHX/action/storage_attestation","attest_author":"https://pith.science/pith/76NK2PPF4S7STGLL5JZFKLMIHX/action/author_attestation","sign_citation":"https://pith.science/pith/76NK2PPF4S7STGLL5JZFKLMIHX/action/citation_signature","submit_replication":"https://pith.science/pith/76NK2PPF4S7STGLL5JZFKLMIHX/action/replication_record"}},"created_at":"2026-05-18T02:04:43.492616+00:00","updated_at":"2026-05-18T02:04:43.492616+00:00"}