{"record_type":"pith_number_record","schema_url":"https://pith.science/schemas/pith-number/v1.json","pith_number":"pith:2011:QNZY2VT235AGC2KKRZPTGSKZGM","short_pith_number":"pith:QNZY2VT2","schema_version":"1.0","canonical_sha256":"83738d567adf4061694a8e5f334959331cb040046fc2ddb55ab73bdb7b91b8e5","source":{"kind":"arxiv","id":"1111.1778","version":1},"attestation_state":"computed","paper":{"title":"Unusual ferromagnetism in nanoparticles of doped oxides and manganites","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"cond-mat.str-el","authors_text":"A. Taraphder, Vatsal Dwivedi","submitted_at":"2011-11-08T01:39:16Z","abstract_excerpt":"The observation of unusually large ferromagnetism in the nanoparticles of doped oxides and enhanced ferromagnetic tendencies in manganite nanoparticles have been in focus recently. For the transition metal-doped oxide nanoparticles a phenomenological `charge transfer ferromagnetism' model is recently proposed by Coey et al. From a microscopic calculation with charge transfer between the defect band and mixed valent dopants, acting as reservoir, we show how the unusually high ferromagnetic response develops. The puzzle of nanosize-induced ferromagnetic tendencies in manganites is also addressed"},"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":"1111.1778","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.str-el","submitted_at":"2011-11-08T01:39:16Z","cross_cats_sorted":[],"title_canon_sha256":"376c068b08e4d82d3644cc92fb73711342001ee02514d1e585f9cfda7accf6e0","abstract_canon_sha256":"51cc1cb45a72f3a8b36bf84422014893e7bafda26455970aec9d0cdad2441d52"},"schema_version":"1.0"},"receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-18T04:09:24.735892Z","signature_b64":"rhF2WsDulYmXQuZ7fQooI9sbsRxTenp/xlV5apch113kzXHYW68OvC9i3t+/PXhyE5XL+a9agGlAyWc0cGUYDQ==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"83738d567adf4061694a8e5f334959331cb040046fc2ddb55ab73bdb7b91b8e5","last_reissued_at":"2026-05-18T04:09:24.735387Z","signature_status":"signed_v1","first_computed_at":"2026-05-18T04:09:24.735387Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"graph_snapshot":{"paper":{"title":"Unusual ferromagnetism in nanoparticles of doped oxides and manganites","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"cond-mat.str-el","authors_text":"A. Taraphder, Vatsal Dwivedi","submitted_at":"2011-11-08T01:39:16Z","abstract_excerpt":"The observation of unusually large ferromagnetism in the nanoparticles of doped oxides and enhanced ferromagnetic tendencies in manganite nanoparticles have been in focus recently. For the transition metal-doped oxide nanoparticles a phenomenological `charge transfer ferromagnetism' model is recently proposed by Coey et al. From a microscopic calculation with charge transfer between the defect band and mixed valent dopants, acting as reservoir, we show how the unusually high ferromagnetic response develops. The puzzle of nanosize-induced ferromagnetic tendencies in manganites is also addressed"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1111.1778","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":"1111.1778","created_at":"2026-05-18T04:09:24.735477+00:00"},{"alias_kind":"arxiv_version","alias_value":"1111.1778v1","created_at":"2026-05-18T04:09:24.735477+00:00"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1111.1778","created_at":"2026-05-18T04:09:24.735477+00:00"},{"alias_kind":"pith_short_12","alias_value":"QNZY2VT235AG","created_at":"2026-05-18T12:26:39.201973+00:00"},{"alias_kind":"pith_short_16","alias_value":"QNZY2VT235AGC2KK","created_at":"2026-05-18T12:26:39.201973+00:00"},{"alias_kind":"pith_short_8","alias_value":"QNZY2VT2","created_at":"2026-05-18T12:26:39.201973+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/QNZY2VT235AGC2KKRZPTGSKZGM","json":"https://pith.science/pith/QNZY2VT235AGC2KKRZPTGSKZGM.json","graph_json":"https://pith.science/api/pith-number/QNZY2VT235AGC2KKRZPTGSKZGM/graph.json","events_json":"https://pith.science/api/pith-number/QNZY2VT235AGC2KKRZPTGSKZGM/events.json","paper":"https://pith.science/paper/QNZY2VT2"},"agent_actions":{"view_html":"https://pith.science/pith/QNZY2VT235AGC2KKRZPTGSKZGM","download_json":"https://pith.science/pith/QNZY2VT235AGC2KKRZPTGSKZGM.json","view_paper":"https://pith.science/paper/QNZY2VT2","resolve_alias":"https://pith.science/api/pith-number/resolve?arxiv=1111.1778&json=true","fetch_graph":"https://pith.science/api/pith-number/QNZY2VT235AGC2KKRZPTGSKZGM/graph.json","fetch_events":"https://pith.science/api/pith-number/QNZY2VT235AGC2KKRZPTGSKZGM/events.json","actions":{"anchor_timestamp":"https://pith.science/pith/QNZY2VT235AGC2KKRZPTGSKZGM/action/timestamp_anchor","attest_storage":"https://pith.science/pith/QNZY2VT235AGC2KKRZPTGSKZGM/action/storage_attestation","attest_author":"https://pith.science/pith/QNZY2VT235AGC2KKRZPTGSKZGM/action/author_attestation","sign_citation":"https://pith.science/pith/QNZY2VT235AGC2KKRZPTGSKZGM/action/citation_signature","submit_replication":"https://pith.science/pith/QNZY2VT235AGC2KKRZPTGSKZGM/action/replication_record"}},"created_at":"2026-05-18T04:09:24.735477+00:00","updated_at":"2026-05-18T04:09:24.735477+00:00"}