{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2018:QBA6KW66WEAJCJX5AYBBO7BDZ5","short_pith_number":"pith:QBA6KW66","canonical_record":{"source":{"id":"1802.05000","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.mes-hall","submitted_at":"2018-02-14T09:26:40Z","cross_cats_sorted":[],"title_canon_sha256":"2b624860467eec3aeb8483dd22bf2bcb3ab0a525f6f1c704768f6b774116ee35","abstract_canon_sha256":"ed980ddedbc80e0235820791e58e7374f9625ff71f07432e9e50402fa59fb78d"},"schema_version":"1.0"},"canonical_sha256":"8041e55bdeb1009126fd0602177c23cf7a9eeba86f8c17c2f0c83e1e7feea1b8","source":{"kind":"arxiv","id":"1802.05000","version":1},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1802.05000","created_at":"2026-05-18T00:09:16Z"},{"alias_kind":"arxiv_version","alias_value":"1802.05000v1","created_at":"2026-05-18T00:09:16Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1802.05000","created_at":"2026-05-18T00:09:16Z"},{"alias_kind":"pith_short_12","alias_value":"QBA6KW66WEAJ","created_at":"2026-05-18T12:32:46Z"},{"alias_kind":"pith_short_16","alias_value":"QBA6KW66WEAJCJX5","created_at":"2026-05-18T12:32:46Z"},{"alias_kind":"pith_short_8","alias_value":"QBA6KW66","created_at":"2026-05-18T12:32:46Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2018:QBA6KW66WEAJCJX5AYBBO7BDZ5","target":"record","payload":{"canonical_record":{"source":{"id":"1802.05000","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.mes-hall","submitted_at":"2018-02-14T09:26:40Z","cross_cats_sorted":[],"title_canon_sha256":"2b624860467eec3aeb8483dd22bf2bcb3ab0a525f6f1c704768f6b774116ee35","abstract_canon_sha256":"ed980ddedbc80e0235820791e58e7374f9625ff71f07432e9e50402fa59fb78d"},"schema_version":"1.0"},"canonical_sha256":"8041e55bdeb1009126fd0602177c23cf7a9eeba86f8c17c2f0c83e1e7feea1b8","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-18T00:09:16.191309Z","signature_b64":"vbUOUYm+E5bdNQvCNOu2BME8If83XHki4neNSq65yB3QBDdZAX29ZciyqUW+NFAj8rfnQ8QiCk20UuJb/obwAA==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"8041e55bdeb1009126fd0602177c23cf7a9eeba86f8c17c2f0c83e1e7feea1b8","last_reissued_at":"2026-05-18T00:09:16.190682Z","signature_status":"signed_v1","first_computed_at":"2026-05-18T00:09:16.190682Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"1802.05000","source_version":1,"attestation_state":"computed"},"signer":{"signer_id":"pith.science","signer_type":"pith_registry","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"created_at":"2026-05-18T00:09:16Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"fBQ6FiFKQYNDA9Wy4gZ3rADhtUgI3FnLgrzDNxUFkE0ntg62/2rybdoJgTWONmDMpvZ1n1f0zmzDjewAjee6AQ==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-06-21T13:22:40.565521Z"},"content_sha256":"f1bd1db7f367f2ca24518c50fea5409a4fc40c6d6224352b6344680790c3f170","schema_version":"1.0","event_id":"sha256:f1bd1db7f367f2ca24518c50fea5409a4fc40c6d6224352b6344680790c3f170"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2018:QBA6KW66WEAJCJX5AYBBO7BDZ5","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"High magnetocaloric efficiency of a NiFe/NiCu/CoFe/MnIr multilayer in a small magnetic field","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"cond-mat.mes-hall","authors_text":"A. A. Fraerman, I. D. Rodionov, J. Chang, N. I. Polushkin, S. N. Vdovichev, V. N. Prudnikov","submitted_at":"2018-02-14T09:26:40Z","abstract_excerpt":"The isothermal magnetic entropy changes are studied in Ni80Fe20/Ni67Cu33/Co90Cu10/Mn80Ir20 stacks at temperatures near the Curie point of the Ni67Cu33 spacer by applying magnetic fields in a few tens of Oersted. Such low fields were sufficient for toggling magnetic moments in the soft ferromagnetic (FM) layer (Ni80Fe20). It is found out that this switching provides the magnetic entropy change, which is up to 20 times larger than that achievable in a single Ni67Cu33 film subjected to such low fields. Our finding holds promise to be utilized in the magnetocaloric devices that would be based on F"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1802.05000","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"},"verdict_id":null},"signer":{"signer_id":"pith.science","signer_type":"pith_registry","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"created_at":"2026-05-18T00:09:16Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"WqkJ+5nIgxUUvOmUYw4LjIiixr5aObO6s2GyR73fBjAHjD+e4YBx2ugz+z+z2gO5LmH5mrjVqzvo52fYfriQCg==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-06-21T13:22:40.565912Z"},"content_sha256":"8d09078cc36287ddd98c6192f9b7e58adcdea40493b0ada3da4ae0b2b28aa37d","schema_version":"1.0","event_id":"sha256:8d09078cc36287ddd98c6192f9b7e58adcdea40493b0ada3da4ae0b2b28aa37d"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/QBA6KW66WEAJCJX5AYBBO7BDZ5/bundle.json","state_url":"https://pith.science/pith/QBA6KW66WEAJCJX5AYBBO7BDZ5/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/QBA6KW66WEAJCJX5AYBBO7BDZ5/bundle.json","status":"primary"}],"public_keys":[{"key_id":"pith-v1-2026-05","algorithm":"ed25519","format":"raw","public_key_b64":"stVStoiQhXFxp4s2pdzPNoqVNBMojDU/fJ2db5S3CbM=","public_key_hex":"b2d552b68890857171a78b36a5dccf368a953413288c353f7c9d9d6f94b709b3","fingerprint_sha256_b32_first128bits":"RVFV5Z2OI2J3ZUO7ERDEBCYNKS","fingerprint_sha256_hex":"8d4b5ee74e4693bcd1df2446408b0d54","rotates_at":null,"url":"https://pith.science/pith-signing-key.json","notes":"Pith uses this Ed25519 key to sign canonical record SHA-256 digests. Verify with: ed25519_verify(public_key, message=canonical_sha256_bytes, signature=base64decode(signature_b64))."}],"merge_version":"pith-open-graph-merge-v1","built_at":"2026-06-21T13:22:40Z","links":{"resolver":"https://pith.science/pith/QBA6KW66WEAJCJX5AYBBO7BDZ5","bundle":"https://pith.science/pith/QBA6KW66WEAJCJX5AYBBO7BDZ5/bundle.json","state":"https://pith.science/pith/QBA6KW66WEAJCJX5AYBBO7BDZ5/state.json","well_known_bundle":"https://pith.science/.well-known/pith/QBA6KW66WEAJCJX5AYBBO7BDZ5/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2018:QBA6KW66WEAJCJX5AYBBO7BDZ5","merge_version":"pith-open-graph-merge-v1","event_count":2,"valid_event_count":2,"invalid_event_count":0,"equivocation_count":0,"current":{"canonical_record":{"metadata":{"abstract_canon_sha256":"ed980ddedbc80e0235820791e58e7374f9625ff71f07432e9e50402fa59fb78d","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.mes-hall","submitted_at":"2018-02-14T09:26:40Z","title_canon_sha256":"2b624860467eec3aeb8483dd22bf2bcb3ab0a525f6f1c704768f6b774116ee35"},"schema_version":"1.0","source":{"id":"1802.05000","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1802.05000","created_at":"2026-05-18T00:09:16Z"},{"alias_kind":"arxiv_version","alias_value":"1802.05000v1","created_at":"2026-05-18T00:09:16Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1802.05000","created_at":"2026-05-18T00:09:16Z"},{"alias_kind":"pith_short_12","alias_value":"QBA6KW66WEAJ","created_at":"2026-05-18T12:32:46Z"},{"alias_kind":"pith_short_16","alias_value":"QBA6KW66WEAJCJX5","created_at":"2026-05-18T12:32:46Z"},{"alias_kind":"pith_short_8","alias_value":"QBA6KW66","created_at":"2026-05-18T12:32:46Z"}],"graph_snapshots":[{"event_id":"sha256:8d09078cc36287ddd98c6192f9b7e58adcdea40493b0ada3da4ae0b2b28aa37d","target":"graph","created_at":"2026-05-18T00:09:16Z","signer":{"key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signer_id":"pith.science","signer_type":"pith_registry"},"payload":{"graph_snapshot":{"author_claims":{"count":0,"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57","strong_count":0},"builder_version":"pith-number-builder-2026-05-17-v1","claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"formal_canon":{"evidence_count":0,"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"paper":{"abstract_excerpt":"The isothermal magnetic entropy changes are studied in Ni80Fe20/Ni67Cu33/Co90Cu10/Mn80Ir20 stacks at temperatures near the Curie point of the Ni67Cu33 spacer by applying magnetic fields in a few tens of Oersted. Such low fields were sufficient for toggling magnetic moments in the soft ferromagnetic (FM) layer (Ni80Fe20). It is found out that this switching provides the magnetic entropy change, which is up to 20 times larger than that achievable in a single Ni67Cu33 film subjected to such low fields. Our finding holds promise to be utilized in the magnetocaloric devices that would be based on F","authors_text":"A. A. Fraerman, I. D. Rodionov, J. Chang, N. I. Polushkin, S. N. Vdovichev, V. N. Prudnikov","cross_cats":[],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.mes-hall","submitted_at":"2018-02-14T09:26:40Z","title":"High magnetocaloric efficiency of a NiFe/NiCu/CoFe/MnIr multilayer in a small magnetic field"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1802.05000","kind":"arxiv","version":1},"verdict":{"created_at":null,"id":null,"model_set":{},"one_line_summary":"","pipeline_version":null,"pith_extraction_headline":"","strongest_claim":"","weakest_assumption":""}},"verdict_id":null}}],"author_attestations":[],"timestamp_anchors":[],"storage_attestations":[],"citation_signatures":[],"replication_records":[],"corrections":[],"mirror_hints":[],"record_created":{"event_id":"sha256:f1bd1db7f367f2ca24518c50fea5409a4fc40c6d6224352b6344680790c3f170","target":"record","created_at":"2026-05-18T00:09:16Z","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":"ed980ddedbc80e0235820791e58e7374f9625ff71f07432e9e50402fa59fb78d","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.mes-hall","submitted_at":"2018-02-14T09:26:40Z","title_canon_sha256":"2b624860467eec3aeb8483dd22bf2bcb3ab0a525f6f1c704768f6b774116ee35"},"schema_version":"1.0","source":{"id":"1802.05000","kind":"arxiv","version":1}},"canonical_sha256":"8041e55bdeb1009126fd0602177c23cf7a9eeba86f8c17c2f0c83e1e7feea1b8","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"8041e55bdeb1009126fd0602177c23cf7a9eeba86f8c17c2f0c83e1e7feea1b8","first_computed_at":"2026-05-18T00:09:16.190682Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T00:09:16.190682Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"vbUOUYm+E5bdNQvCNOu2BME8If83XHki4neNSq65yB3QBDdZAX29ZciyqUW+NFAj8rfnQ8QiCk20UuJb/obwAA==","signature_status":"signed_v1","signed_at":"2026-05-18T00:09:16.191309Z","signed_message":"canonical_sha256_bytes"},"source_id":"1802.05000","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:f1bd1db7f367f2ca24518c50fea5409a4fc40c6d6224352b6344680790c3f170","sha256:8d09078cc36287ddd98c6192f9b7e58adcdea40493b0ada3da4ae0b2b28aa37d"],"state_sha256":"8b7ac1df4881637fd72b3099f56d248bb45c542eb58eb5cd48eec8915e7ccc8c"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"l+Hwxv6EgXrnbjLCbVKxvvJ6mw6kAF3fFHcvJ9XyeT/5LfVodBa8faCq8v5KP3sk7Da/n5sp8VmiUTtn+jxkDw==","signed_message":"bundle_sha256_bytes","signed_at":"2026-06-21T13:22:40.567967Z","bundle_sha256":"af818d07846c934f789edddc690f68b9a1bc973a44ecf8ac8fa6d4b07f0189ef"}}