{"record_type":"pith_number_record","schema_url":"https://pith.science/schemas/pith-number/v1.json","pith_number":"pith:2017:3JVIEF75WZ6JBBSVMPDSXKO7GT","short_pith_number":"pith:3JVIEF75","schema_version":"1.0","canonical_sha256":"da6a8217fdb67c90865563c72ba9df34e5c98395389b0147db9a6481f9b617da","source":{"kind":"arxiv","id":"1702.08378","version":1},"attestation_state":"computed","paper":{"title":"Unusual enhancement of effective magnetic anisotropy with decreasing particle size in maghemite nanoparticles","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"cond-mat.mtrl-sci","authors_text":"K. L. Pisane, M. S. Seehra, Sobhit Singh","submitted_at":"2017-02-27T17:03:19Z","abstract_excerpt":"Experimental results and a model are presented to explain the observed unusual enhancement of the effective magnetic anisotropy Keff with decreasing particle size D from 15 nm to 2.5 nm in {\\gamma}-Fe2O3 nanoparticles (NPs). The samples include oleic acid-coated NPs with D = 2.5, 3.4, 6.3 and 7.0 nm investigated here, with the results on other sizes taken from literature. Keff is determined from the analysis of the frequency dependence of the blocking temperature TB after considering the effects of interparticle interactions on TB. The data of Keff vs. D is fit to the derived core-shell-based "},"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":"1702.08378","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.mtrl-sci","submitted_at":"2017-02-27T17:03:19Z","cross_cats_sorted":[],"title_canon_sha256":"d37d020f837f618139f223abf0a6403f6c325c828b66f38ddadaf76540d855d4","abstract_canon_sha256":"d3ddc883919670d97cab76dd21bed965d599220e7f274887e43c80595dcc3669"},"schema_version":"1.0"},"receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-18T00:41:36.747834Z","signature_b64":"YwejgMj03LBQC82A2Ooz21pBUTDwuximRRCXw2o4Vx3T/DEWEwdUYdojnfpoSRmeKalnJzfy+jaypznBl5PIAA==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"da6a8217fdb67c90865563c72ba9df34e5c98395389b0147db9a6481f9b617da","last_reissued_at":"2026-05-18T00:41:36.747339Z","signature_status":"signed_v1","first_computed_at":"2026-05-18T00:41:36.747339Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"graph_snapshot":{"paper":{"title":"Unusual enhancement of effective magnetic anisotropy with decreasing particle size in maghemite nanoparticles","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"cond-mat.mtrl-sci","authors_text":"K. L. Pisane, M. S. Seehra, Sobhit Singh","submitted_at":"2017-02-27T17:03:19Z","abstract_excerpt":"Experimental results and a model are presented to explain the observed unusual enhancement of the effective magnetic anisotropy Keff with decreasing particle size D from 15 nm to 2.5 nm in {\\gamma}-Fe2O3 nanoparticles (NPs). The samples include oleic acid-coated NPs with D = 2.5, 3.4, 6.3 and 7.0 nm investigated here, with the results on other sizes taken from literature. Keff is determined from the analysis of the frequency dependence of the blocking temperature TB after considering the effects of interparticle interactions on TB. The data of Keff vs. D is fit to the derived core-shell-based "},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1702.08378","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":"1702.08378","created_at":"2026-05-18T00:41:36.747416+00:00"},{"alias_kind":"arxiv_version","alias_value":"1702.08378v1","created_at":"2026-05-18T00:41:36.747416+00:00"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1702.08378","created_at":"2026-05-18T00:41:36.747416+00:00"},{"alias_kind":"pith_short_12","alias_value":"3JVIEF75WZ6J","created_at":"2026-05-18T12:30:58.224056+00:00"},{"alias_kind":"pith_short_16","alias_value":"3JVIEF75WZ6JBBSV","created_at":"2026-05-18T12:30:58.224056+00:00"},{"alias_kind":"pith_short_8","alias_value":"3JVIEF75","created_at":"2026-05-18T12:30:58.224056+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/3JVIEF75WZ6JBBSVMPDSXKO7GT","json":"https://pith.science/pith/3JVIEF75WZ6JBBSVMPDSXKO7GT.json","graph_json":"https://pith.science/api/pith-number/3JVIEF75WZ6JBBSVMPDSXKO7GT/graph.json","events_json":"https://pith.science/api/pith-number/3JVIEF75WZ6JBBSVMPDSXKO7GT/events.json","paper":"https://pith.science/paper/3JVIEF75"},"agent_actions":{"view_html":"https://pith.science/pith/3JVIEF75WZ6JBBSVMPDSXKO7GT","download_json":"https://pith.science/pith/3JVIEF75WZ6JBBSVMPDSXKO7GT.json","view_paper":"https://pith.science/paper/3JVIEF75","resolve_alias":"https://pith.science/api/pith-number/resolve?arxiv=1702.08378&json=true","fetch_graph":"https://pith.science/api/pith-number/3JVIEF75WZ6JBBSVMPDSXKO7GT/graph.json","fetch_events":"https://pith.science/api/pith-number/3JVIEF75WZ6JBBSVMPDSXKO7GT/events.json","actions":{"anchor_timestamp":"https://pith.science/pith/3JVIEF75WZ6JBBSVMPDSXKO7GT/action/timestamp_anchor","attest_storage":"https://pith.science/pith/3JVIEF75WZ6JBBSVMPDSXKO7GT/action/storage_attestation","attest_author":"https://pith.science/pith/3JVIEF75WZ6JBBSVMPDSXKO7GT/action/author_attestation","sign_citation":"https://pith.science/pith/3JVIEF75WZ6JBBSVMPDSXKO7GT/action/citation_signature","submit_replication":"https://pith.science/pith/3JVIEF75WZ6JBBSVMPDSXKO7GT/action/replication_record"}},"created_at":"2026-05-18T00:41:36.747416+00:00","updated_at":"2026-05-18T00:41:36.747416+00:00"}