{"record_type":"pith_number_record","schema_url":"https://pith.science/schemas/pith-number/v1.json","pith_number":"pith:2014:XVMO5APHGNCRNJK32MJJB6DJXG","short_pith_number":"pith:XVMO5APH","schema_version":"1.0","canonical_sha256":"bd58ee81e7334516a55bd31290f869b99ae333a65727b810de810614282d3643","source":{"kind":"arxiv","id":"1407.1008","version":1},"attestation_state":"computed","paper":{"title":"Pathways Towards Ferroelectricity in Hafnia","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"cond-mat.mtrl-sci","authors_text":"George A. Rossetti, Jr., Rampi Ramprasad, Tran Doan Huan, Vinit Sharma","submitted_at":"2014-07-03T18:36:46Z","abstract_excerpt":"The question of whether one can systematically identify (previously unknown) ferroelectric phases of a given material is addressed, taking hafnia (HfO$_2$) as an example. Low free energy phases at various pressures and temperatures are identified using a first-principles based structure search algorithm. Ferroelectric phases are then recognized by exploiting group theoretical principles for the symmetry-allowed displacive transitions between non-polar and polar phases. Two orthorhombic polar phases occurring in space groups $Pca2_1$ and $Pmn2_1$ are singled out as the most viable ferroelectric"},"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":"1407.1008","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.mtrl-sci","submitted_at":"2014-07-03T18:36:46Z","cross_cats_sorted":[],"title_canon_sha256":"5d20c4079f1500b9a885574e5fb6d7f54f8baa775f46dee8409a19948e3e3780","abstract_canon_sha256":"a5c0005240bfe228da6520aef78f521bdde156256b8ba28750ad29606b87051e"},"schema_version":"1.0"},"receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-18T02:44:08.097348Z","signature_b64":"BblonQ35MYVf+QU+iNzGHnsQJopMcZAxqsfo1b2VgznWhsaUd0tPSUBvwMRoDpzSdGreAFMV/QV2DctIGD/iAQ==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"bd58ee81e7334516a55bd31290f869b99ae333a65727b810de810614282d3643","last_reissued_at":"2026-05-18T02:44:08.096921Z","signature_status":"signed_v1","first_computed_at":"2026-05-18T02:44:08.096921Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"graph_snapshot":{"paper":{"title":"Pathways Towards Ferroelectricity in Hafnia","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"cond-mat.mtrl-sci","authors_text":"George A. Rossetti, Jr., Rampi Ramprasad, Tran Doan Huan, Vinit Sharma","submitted_at":"2014-07-03T18:36:46Z","abstract_excerpt":"The question of whether one can systematically identify (previously unknown) ferroelectric phases of a given material is addressed, taking hafnia (HfO$_2$) as an example. Low free energy phases at various pressures and temperatures are identified using a first-principles based structure search algorithm. Ferroelectric phases are then recognized by exploiting group theoretical principles for the symmetry-allowed displacive transitions between non-polar and polar phases. Two orthorhombic polar phases occurring in space groups $Pca2_1$ and $Pmn2_1$ are singled out as the most viable ferroelectric"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1407.1008","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":"1407.1008","created_at":"2026-05-18T02:44:08.096978+00:00"},{"alias_kind":"arxiv_version","alias_value":"1407.1008v1","created_at":"2026-05-18T02:44:08.096978+00:00"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1407.1008","created_at":"2026-05-18T02:44:08.096978+00:00"},{"alias_kind":"pith_short_12","alias_value":"XVMO5APHGNCR","created_at":"2026-05-18T12:28:57.508820+00:00"},{"alias_kind":"pith_short_16","alias_value":"XVMO5APHGNCRNJK3","created_at":"2026-05-18T12:28:57.508820+00:00"},{"alias_kind":"pith_short_8","alias_value":"XVMO5APH","created_at":"2026-05-18T12:28:57.508820+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/XVMO5APHGNCRNJK32MJJB6DJXG","json":"https://pith.science/pith/XVMO5APHGNCRNJK32MJJB6DJXG.json","graph_json":"https://pith.science/api/pith-number/XVMO5APHGNCRNJK32MJJB6DJXG/graph.json","events_json":"https://pith.science/api/pith-number/XVMO5APHGNCRNJK32MJJB6DJXG/events.json","paper":"https://pith.science/paper/XVMO5APH"},"agent_actions":{"view_html":"https://pith.science/pith/XVMO5APHGNCRNJK32MJJB6DJXG","download_json":"https://pith.science/pith/XVMO5APHGNCRNJK32MJJB6DJXG.json","view_paper":"https://pith.science/paper/XVMO5APH","resolve_alias":"https://pith.science/api/pith-number/resolve?arxiv=1407.1008&json=true","fetch_graph":"https://pith.science/api/pith-number/XVMO5APHGNCRNJK32MJJB6DJXG/graph.json","fetch_events":"https://pith.science/api/pith-number/XVMO5APHGNCRNJK32MJJB6DJXG/events.json","actions":{"anchor_timestamp":"https://pith.science/pith/XVMO5APHGNCRNJK32MJJB6DJXG/action/timestamp_anchor","attest_storage":"https://pith.science/pith/XVMO5APHGNCRNJK32MJJB6DJXG/action/storage_attestation","attest_author":"https://pith.science/pith/XVMO5APHGNCRNJK32MJJB6DJXG/action/author_attestation","sign_citation":"https://pith.science/pith/XVMO5APHGNCRNJK32MJJB6DJXG/action/citation_signature","submit_replication":"https://pith.science/pith/XVMO5APHGNCRNJK32MJJB6DJXG/action/replication_record"}},"created_at":"2026-05-18T02:44:08.096978+00:00","updated_at":"2026-05-18T02:44:08.096978+00:00"}