{"record_type":"pith_number_record","schema_url":"https://pith.science/schemas/pith-number/v1.json","pith_number":"pith:2021:OJVFBFEIETGNMIVYCJAIQ45QW2","short_pith_number":"pith:OJVFBFEI","schema_version":"1.0","canonical_sha256":"726a50948824ccd622b812408873b0b69477b9d372b0545bc5dd7f6a768a475c","source":{"kind":"arxiv","id":"2104.01640","version":1},"attestation_state":"computed","paper":{"title":"Characterization of Nb22O54 microrods grown from niobium oxide powders recovered from mine tailings","license":"http://creativecommons.org/licenses/by-nc-nd/4.0/","headline":"","cross_cats":["physics.chem-ph"],"primary_cat":"cond-mat.mtrl-sci","authors_text":"B. Sotillo, F. A. Lopez, L. Alcaraz, P. Fernandez","submitted_at":"2021-04-04T16:19:31Z","abstract_excerpt":"In this work, the possibility of using niobium oxide recovered from tailings from the Penouta Sn-Nb-Ta deposit (located at the North of Spain) as starting material for growing microstructures is demonstrated. The properties of the starting material have been studied to understand its crystal structure, quality and purity. Recovered niobium oxide powders are mainly of TT-Nb2O5. These powders have been used to grow Nb22O54 microrods by an evaporation method in an argon atmosphere. Different characterization techniques (X-Ray diffraction, scanning electron microscopy, micro-Raman spectroscopy, lu"},"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":"2104.01640","kind":"arxiv","version":1},"metadata":{"license":"http://creativecommons.org/licenses/by-nc-nd/4.0/","primary_cat":"cond-mat.mtrl-sci","submitted_at":"2021-04-04T16:19:31Z","cross_cats_sorted":["physics.chem-ph"],"title_canon_sha256":"d99296b8ac207f488981d141d6fdd94303a5288a4fc96f2eaf607e24eaba918b","abstract_canon_sha256":"730eb74f1a7c3bb62625788bb0d1d7e93178a3e8b7c463271ec007a649b6cc44"},"schema_version":"1.0"},"receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-07-05T02:29:02.181432Z","signature_b64":"rrIQ6bPEG4cZ/ETIyokJORwWswAPJlB5cPkbyn2VApTU5WmVn/qp4A6W0v2Hdha4Rt1cNspvfM9YhLsJrspjAg==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"726a50948824ccd622b812408873b0b69477b9d372b0545bc5dd7f6a768a475c","last_reissued_at":"2026-07-05T02:29:02.181069Z","signature_status":"signed_v1","first_computed_at":"2026-07-05T02:29:02.181069Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"graph_snapshot":{"paper":{"title":"Characterization of Nb22O54 microrods grown from niobium oxide powders recovered from mine tailings","license":"http://creativecommons.org/licenses/by-nc-nd/4.0/","headline":"","cross_cats":["physics.chem-ph"],"primary_cat":"cond-mat.mtrl-sci","authors_text":"B. Sotillo, F. A. Lopez, L. Alcaraz, P. Fernandez","submitted_at":"2021-04-04T16:19:31Z","abstract_excerpt":"In this work, the possibility of using niobium oxide recovered from tailings from the Penouta Sn-Nb-Ta deposit (located at the North of Spain) as starting material for growing microstructures is demonstrated. The properties of the starting material have been studied to understand its crystal structure, quality and purity. Recovered niobium oxide powders are mainly of TT-Nb2O5. These powders have been used to grow Nb22O54 microrods by an evaporation method in an argon atmosphere. Different characterization techniques (X-Ray diffraction, scanning electron microscopy, micro-Raman spectroscopy, lu"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2104.01640","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/2104.01640/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"},"aliases":[{"alias_kind":"arxiv","alias_value":"2104.01640","created_at":"2026-07-05T02:29:02.181127+00:00"},{"alias_kind":"arxiv_version","alias_value":"2104.01640v1","created_at":"2026-07-05T02:29:02.181127+00:00"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.2104.01640","created_at":"2026-07-05T02:29:02.181127+00:00"},{"alias_kind":"pith_short_12","alias_value":"OJVFBFEIETGN","created_at":"2026-07-05T02:29:02.181127+00:00"},{"alias_kind":"pith_short_16","alias_value":"OJVFBFEIETGNMIVY","created_at":"2026-07-05T02:29:02.181127+00:00"},{"alias_kind":"pith_short_8","alias_value":"OJVFBFEI","created_at":"2026-07-05T02:29:02.181127+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/OJVFBFEIETGNMIVYCJAIQ45QW2","json":"https://pith.science/pith/OJVFBFEIETGNMIVYCJAIQ45QW2.json","graph_json":"https://pith.science/api/pith-number/OJVFBFEIETGNMIVYCJAIQ45QW2/graph.json","events_json":"https://pith.science/api/pith-number/OJVFBFEIETGNMIVYCJAIQ45QW2/events.json","paper":"https://pith.science/paper/OJVFBFEI"},"agent_actions":{"view_html":"https://pith.science/pith/OJVFBFEIETGNMIVYCJAIQ45QW2","download_json":"https://pith.science/pith/OJVFBFEIETGNMIVYCJAIQ45QW2.json","view_paper":"https://pith.science/paper/OJVFBFEI","resolve_alias":"https://pith.science/api/pith-number/resolve?arxiv=2104.01640&json=true","fetch_graph":"https://pith.science/api/pith-number/OJVFBFEIETGNMIVYCJAIQ45QW2/graph.json","fetch_events":"https://pith.science/api/pith-number/OJVFBFEIETGNMIVYCJAIQ45QW2/events.json","actions":{"anchor_timestamp":"https://pith.science/pith/OJVFBFEIETGNMIVYCJAIQ45QW2/action/timestamp_anchor","attest_storage":"https://pith.science/pith/OJVFBFEIETGNMIVYCJAIQ45QW2/action/storage_attestation","attest_author":"https://pith.science/pith/OJVFBFEIETGNMIVYCJAIQ45QW2/action/author_attestation","sign_citation":"https://pith.science/pith/OJVFBFEIETGNMIVYCJAIQ45QW2/action/citation_signature","submit_replication":"https://pith.science/pith/OJVFBFEIETGNMIVYCJAIQ45QW2/action/replication_record"}},"created_at":"2026-07-05T02:29:02.181127+00:00","updated_at":"2026-07-05T02:29:02.181127+00:00"}