{"record_type":"pith_number_record","schema_url":"https://pith.science/schemas/pith-number/v1.json","pith_number":"pith:2011:AQSOARYK6YIZGPU6VWVSFW6LPP","short_pith_number":"pith:AQSOARYK","schema_version":"1.0","canonical_sha256":"0424e0470af611933e9eadab22dbcb7bf543d5dd71be9c793e28077677219e5d","source":{"kind":"arxiv","id":"1104.0139","version":1},"attestation_state":"computed","paper":{"title":"Tuning the magnetic properties of Co nanoparticles by Pt capping","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"cond-mat.mes-hall","authors_text":"A. Ebbing, G. Eggeler, L. Agudo, O. Hellwig, O. Petracic","submitted_at":"2011-04-01T10:53:33Z","abstract_excerpt":"We show that by capping Co nanoparticles with small amounts of Pt strong changes of the magnetic properties can be induced. The Co nanoparticles have a mean diameter of 2.7 nm. From magnetometry measurements we find that for zero and for small amounts of Pt (nominal thickness t(Pt) < 0.7 nm) the nanoparticles behave superparamagnetic like. With increasing t(Pt) the blocking temperature is enhanced from 16 up to 108 K. Capping with Pd yields comparable results. However, for values t(Pt) > 1 nm a strongly coupled state is encountered resembling a ferromagnet with a T_c approx. 400 K"},"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":"1104.0139","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.mes-hall","submitted_at":"2011-04-01T10:53:33Z","cross_cats_sorted":[],"title_canon_sha256":"1a0e6219bc4ede7edbe59a8ebdef376aa0fdbf60cd3d932e3ff0fdc1dc806698","abstract_canon_sha256":"3c156652ee13773044461e214b0dfdb4f1beeaaa033d5b8c8a4f475025fa09c5"},"schema_version":"1.0"},"receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-18T02:02:41.579177Z","signature_b64":"FsyAq7wGyzZRM69cN8OtjAjMmOwYTDeF874E4MEVml+LsxaI1lO2lIpvQuciF7qco4fIZrPqxYXdyvoS8ULMDA==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"0424e0470af611933e9eadab22dbcb7bf543d5dd71be9c793e28077677219e5d","last_reissued_at":"2026-05-18T02:02:41.578523Z","signature_status":"signed_v1","first_computed_at":"2026-05-18T02:02:41.578523Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"graph_snapshot":{"paper":{"title":"Tuning the magnetic properties of Co nanoparticles by Pt capping","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"cond-mat.mes-hall","authors_text":"A. Ebbing, G. Eggeler, L. Agudo, O. Hellwig, O. Petracic","submitted_at":"2011-04-01T10:53:33Z","abstract_excerpt":"We show that by capping Co nanoparticles with small amounts of Pt strong changes of the magnetic properties can be induced. The Co nanoparticles have a mean diameter of 2.7 nm. From magnetometry measurements we find that for zero and for small amounts of Pt (nominal thickness t(Pt) < 0.7 nm) the nanoparticles behave superparamagnetic like. With increasing t(Pt) the blocking temperature is enhanced from 16 up to 108 K. Capping with Pd yields comparable results. However, for values t(Pt) > 1 nm a strongly coupled state is encountered resembling a ferromagnet with a T_c approx. 400 K"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1104.0139","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":"1104.0139","created_at":"2026-05-18T02:02:41.578609+00:00"},{"alias_kind":"arxiv_version","alias_value":"1104.0139v1","created_at":"2026-05-18T02:02:41.578609+00:00"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1104.0139","created_at":"2026-05-18T02:02:41.578609+00:00"},{"alias_kind":"pith_short_12","alias_value":"AQSOARYK6YIZ","created_at":"2026-05-18T12:26:24.575870+00:00"},{"alias_kind":"pith_short_16","alias_value":"AQSOARYK6YIZGPU6","created_at":"2026-05-18T12:26:24.575870+00:00"},{"alias_kind":"pith_short_8","alias_value":"AQSOARYK","created_at":"2026-05-18T12:26:24.575870+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/AQSOARYK6YIZGPU6VWVSFW6LPP","json":"https://pith.science/pith/AQSOARYK6YIZGPU6VWVSFW6LPP.json","graph_json":"https://pith.science/api/pith-number/AQSOARYK6YIZGPU6VWVSFW6LPP/graph.json","events_json":"https://pith.science/api/pith-number/AQSOARYK6YIZGPU6VWVSFW6LPP/events.json","paper":"https://pith.science/paper/AQSOARYK"},"agent_actions":{"view_html":"https://pith.science/pith/AQSOARYK6YIZGPU6VWVSFW6LPP","download_json":"https://pith.science/pith/AQSOARYK6YIZGPU6VWVSFW6LPP.json","view_paper":"https://pith.science/paper/AQSOARYK","resolve_alias":"https://pith.science/api/pith-number/resolve?arxiv=1104.0139&json=true","fetch_graph":"https://pith.science/api/pith-number/AQSOARYK6YIZGPU6VWVSFW6LPP/graph.json","fetch_events":"https://pith.science/api/pith-number/AQSOARYK6YIZGPU6VWVSFW6LPP/events.json","actions":{"anchor_timestamp":"https://pith.science/pith/AQSOARYK6YIZGPU6VWVSFW6LPP/action/timestamp_anchor","attest_storage":"https://pith.science/pith/AQSOARYK6YIZGPU6VWVSFW6LPP/action/storage_attestation","attest_author":"https://pith.science/pith/AQSOARYK6YIZGPU6VWVSFW6LPP/action/author_attestation","sign_citation":"https://pith.science/pith/AQSOARYK6YIZGPU6VWVSFW6LPP/action/citation_signature","submit_replication":"https://pith.science/pith/AQSOARYK6YIZGPU6VWVSFW6LPP/action/replication_record"}},"created_at":"2026-05-18T02:02:41.578609+00:00","updated_at":"2026-05-18T02:02:41.578609+00:00"}