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In contrast, compositions with lower Co content (x = 0.2 – 0.5) show larger slo","work_id":"8ccdb495-1eac-4629-93d0-4a30f67c41fb","year":2000}],"snapshot_sha256":"8a32cb9caf96fd260e44c760e4f0de2c8a7fad555ff01e4b2e1ac86a0417791e"},"source":{"id":"2605.13611","kind":"arxiv","version":1},"verdict":{"created_at":"2026-05-14T18:03:26.031291Z","id":"cc1b9e6a-b3d7-4fc8-b6df-93f337ff986f","model_set":{"reader":"grok-4.3"},"one_line_summary":"Cobalt substitution in these nanostructured perovskites increases ferromagnetic coupling and produces a maximum magnetic entropy change of 1.13 J/kg K under 3 T for the x=1 composition.","pipeline_version":"pith-pipeline@v0.9.0","pith_extraction_headline":"Cobalt substitution combined with nanostructuring maximizes magnetocaloric entropy change to 1.13 J/kg K under 3 T in La0.6Sr0.4Fe1-xCoxO3.","strongest_claim":"These results demonstrate that the combination of Co doping and controlled nanostructuring effectively optimizes the magnetocaloric response, with a maximum entropy change of 1.13 J/(kg K) under 3 T for x=1.","weakest_assumption":"That the Maxwell relations applied to the measured magnetization curves give an accurate entropy change without significant contributions from particle-size effects or undetected secondary phases in the nanostructured samples."}},"verdict_id":"cc1b9e6a-b3d7-4fc8-b6df-93f337ff986f"}}],"author_attestations":[],"timestamp_anchors":[],"storage_attestations":[],"citation_signatures":[],"replication_records":[],"corrections":[],"mirror_hints":[],"record_created":{"event_id":"sha256:74f9732c144be187c84b6a9488c44f1dcd0f303c6dd43bc44c4c181b06537523","target":"record","created_at":"2026-05-18T02:44:18Z","signer":{"key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signer_id":"pith.science","signer_type":"pith_registry"},"payload":{"attestation_state":"computed","canonical_record":{"metadata":{"abstract_canon_sha256":"a3a4cb6255002d71c44d0c049dacfa37b8b6180a7ecfed7d33648a28b581f543","cross_cats_sorted":[],"license":"http://creativecommons.org/licenses/by/4.0/","primary_cat":"cond-mat.mtrl-sci","submitted_at":"2026-05-13T14:43:52Z","title_canon_sha256":"51d23a56a8c71e5779e9a5a42dff40bfe39f8214fd5d90a9cd117bf77815ff22"},"schema_version":"1.0","source":{"id":"2605.13611","kind":"arxiv","version":1}},"canonical_sha256":"ba474938a2b1736edc57ea0a94669416f346b351812f7a4453f817d502f49fe5","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"ba474938a2b1736edc57ea0a94669416f346b351812f7a4453f817d502f49fe5","first_computed_at":"2026-05-18T02:44:18.050309Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T02:44:18.050309Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"+RqA/xEdEfeb9MQ/Ux0puEvvCgseY6/pLxwT9YEyg8rqwL41uU+9H8NbrscUADAzpP2FPs77wraSupybFGPRBg==","signature_status":"signed_v1","signed_at":"2026-05-18T02:44:18.050886Z","signed_message":"canonical_sha256_bytes"},"source_id":"2605.13611","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:74f9732c144be187c84b6a9488c44f1dcd0f303c6dd43bc44c4c181b06537523","sha256:ed2014a6ac41a0df8edd4d692db5027bd8559cb24b636e90fbb8e9afda4cba9e","sha256:d9ad684d36f01217f33e8ab5cef8f48d5db1f1e3f4cabbc2f012674d4ab879ae"],"state_sha256":"4180e5d7a0ed9a3d197d7d21be999f4257eaa2999b91d4d1d8b438c849052858"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"Kkknjdfiatm6TN6uCP99o8XPT/VpwKcSOIxQ+b+fOoleIeIpsTLifX32PSIL7MrgfIcgmGHArGsHodz7EIY0Bw==","signed_message":"bundle_sha256_bytes","signed_at":"2026-05-21T21:13:45.212167Z","bundle_sha256":"92ff62f2c5be4435ea3c71014f5ef9a9a8b3cfb3bd46a6f06344ac5217cd6420"}}