{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2009:HAVXGJ4I5KFF76PU5FOLMX6VOG","short_pith_number":"pith:HAVXGJ4I","canonical_record":{"source":{"id":"0907.5281","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.mtrl-sci","submitted_at":"2009-07-30T08:58:48Z","cross_cats_sorted":[],"title_canon_sha256":"5d2b5ab284c48dac4c186fd93cff3a3c459b4a2d3aa70a2d07d0b5b498ce2017","abstract_canon_sha256":"51e98b849051d5621166ff1d1877de7e1189439b3dbcb0677bb4b477f5ec6398"},"schema_version":"1.0"},"canonical_sha256":"382b732788ea8a5ff9f4e95cb65fd571b9426df95f91a7f6c0158174718b71d7","source":{"kind":"arxiv","id":"0907.5281","version":1},"source_aliases":[{"alias_kind":"arxiv","alias_value":"0907.5281","created_at":"2026-05-18T03:57:53Z"},{"alias_kind":"arxiv_version","alias_value":"0907.5281v1","created_at":"2026-05-18T03:57:53Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.0907.5281","created_at":"2026-05-18T03:57:53Z"},{"alias_kind":"pith_short_12","alias_value":"HAVXGJ4I5KFF","created_at":"2026-05-18T12:25:59Z"},{"alias_kind":"pith_short_16","alias_value":"HAVXGJ4I5KFF76PU","created_at":"2026-05-18T12:25:59Z"},{"alias_kind":"pith_short_8","alias_value":"HAVXGJ4I","created_at":"2026-05-18T12:25:59Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2009:HAVXGJ4I5KFF76PU5FOLMX6VOG","target":"record","payload":{"canonical_record":{"source":{"id":"0907.5281","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.mtrl-sci","submitted_at":"2009-07-30T08:58:48Z","cross_cats_sorted":[],"title_canon_sha256":"5d2b5ab284c48dac4c186fd93cff3a3c459b4a2d3aa70a2d07d0b5b498ce2017","abstract_canon_sha256":"51e98b849051d5621166ff1d1877de7e1189439b3dbcb0677bb4b477f5ec6398"},"schema_version":"1.0"},"canonical_sha256":"382b732788ea8a5ff9f4e95cb65fd571b9426df95f91a7f6c0158174718b71d7","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-18T03:57:53.815338Z","signature_b64":"kIEPZ1SwyefhGwH4FWEgSuzNkQwJtHEW1BnZ/fCN9IaDJudfCdvH3pqj5PmJHmB5FqAXCOEDfObKiYOn3nCWAA==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"382b732788ea8a5ff9f4e95cb65fd571b9426df95f91a7f6c0158174718b71d7","last_reissued_at":"2026-05-18T03:57:53.814551Z","signature_status":"signed_v1","first_computed_at":"2026-05-18T03:57:53.814551Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"0907.5281","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":"2026-05-18T03:57:53Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"zeAOc99l2qPxjPqmVUqnTuesZoXcvnA+ivi6n1IfJrYWLtwgDefOmgCiYxMvVNUJY7u7yDCjFGd3hgji0k6WBw==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-06-10T02:46:19.976996Z"},"content_sha256":"965dadedc946ee03e967e81fadf421bc811d62b4f5743ed43b2142ae258f8cf1","schema_version":"1.0","event_id":"sha256:965dadedc946ee03e967e81fadf421bc811d62b4f5743ed43b2142ae258f8cf1"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2009:HAVXGJ4I5KFF76PU5FOLMX6VOG","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Magnetoelectric response of multiferroic BiFeO3 and related materials","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"cond-mat.mtrl-sci","authors_text":"Jacek C. Wojdel, Jorge Iniguez (ICMAB-CSIC)","submitted_at":"2009-07-30T08:58:48Z","abstract_excerpt":"We present a first-principles scheme for computing the magnetoelectric response of multiferroics. We apply our method to BiFeO3 (BFO) and related compounds in which Fe is substituted by other magnetic species. We show that under certain relevant conditions -- i.e., in absence of incommensurate spin modulation, as in BFO thin films and some BFO-based solid solutions -- these materials display a large linear magnetoelectric response. Our calculations reveal the atomistic origin of the coupling and allow us to identify the most promising strategies to enhance it."},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"0907.5281","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":"2026-05-18T03:57:53Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"TBvfyoVuVNiIxPC0C32FdmY5jado0NICLdJUd8wHXUnZvJ2dIniuiteFwXgBczFun4jnTew5vIaX6tPP5NVdAA==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-06-10T02:46:19.977733Z"},"content_sha256":"1301e74e965e8d1f82461dccde4a0a644107c54520a5f87379f551bbc6925562","schema_version":"1.0","event_id":"sha256:1301e74e965e8d1f82461dccde4a0a644107c54520a5f87379f551bbc6925562"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/HAVXGJ4I5KFF76PU5FOLMX6VOG/bundle.json","state_url":"https://pith.science/pith/HAVXGJ4I5KFF76PU5FOLMX6VOG/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/HAVXGJ4I5KFF76PU5FOLMX6VOG/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":"2026-06-10T02:46:19Z","links":{"resolver":"https://pith.science/pith/HAVXGJ4I5KFF76PU5FOLMX6VOG","bundle":"https://pith.science/pith/HAVXGJ4I5KFF76PU5FOLMX6VOG/bundle.json","state":"https://pith.science/pith/HAVXGJ4I5KFF76PU5FOLMX6VOG/state.json","well_known_bundle":"https://pith.science/.well-known/pith/HAVXGJ4I5KFF76PU5FOLMX6VOG/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2009:HAVXGJ4I5KFF76PU5FOLMX6VOG","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":"51e98b849051d5621166ff1d1877de7e1189439b3dbcb0677bb4b477f5ec6398","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.mtrl-sci","submitted_at":"2009-07-30T08:58:48Z","title_canon_sha256":"5d2b5ab284c48dac4c186fd93cff3a3c459b4a2d3aa70a2d07d0b5b498ce2017"},"schema_version":"1.0","source":{"id":"0907.5281","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"0907.5281","created_at":"2026-05-18T03:57:53Z"},{"alias_kind":"arxiv_version","alias_value":"0907.5281v1","created_at":"2026-05-18T03:57:53Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.0907.5281","created_at":"2026-05-18T03:57:53Z"},{"alias_kind":"pith_short_12","alias_value":"HAVXGJ4I5KFF","created_at":"2026-05-18T12:25:59Z"},{"alias_kind":"pith_short_16","alias_value":"HAVXGJ4I5KFF76PU","created_at":"2026-05-18T12:25:59Z"},{"alias_kind":"pith_short_8","alias_value":"HAVXGJ4I","created_at":"2026-05-18T12:25:59Z"}],"graph_snapshots":[{"event_id":"sha256:1301e74e965e8d1f82461dccde4a0a644107c54520a5f87379f551bbc6925562","target":"graph","created_at":"2026-05-18T03:57:53Z","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":"We present a first-principles scheme for computing the magnetoelectric response of multiferroics. We apply our method to BiFeO3 (BFO) and related compounds in which Fe is substituted by other magnetic species. We show that under certain relevant conditions -- i.e., in absence of incommensurate spin modulation, as in BFO thin films and some BFO-based solid solutions -- these materials display a large linear magnetoelectric response. Our calculations reveal the atomistic origin of the coupling and allow us to identify the most promising strategies to enhance it.","authors_text":"Jacek C. Wojdel, Jorge Iniguez (ICMAB-CSIC)","cross_cats":[],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.mtrl-sci","submitted_at":"2009-07-30T08:58:48Z","title":"Magnetoelectric response of multiferroic BiFeO3 and related materials"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"0907.5281","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":"sha256:965dadedc946ee03e967e81fadf421bc811d62b4f5743ed43b2142ae258f8cf1","target":"record","created_at":"2026-05-18T03:57:53Z","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":"51e98b849051d5621166ff1d1877de7e1189439b3dbcb0677bb4b477f5ec6398","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.mtrl-sci","submitted_at":"2009-07-30T08:58:48Z","title_canon_sha256":"5d2b5ab284c48dac4c186fd93cff3a3c459b4a2d3aa70a2d07d0b5b498ce2017"},"schema_version":"1.0","source":{"id":"0907.5281","kind":"arxiv","version":1}},"canonical_sha256":"382b732788ea8a5ff9f4e95cb65fd571b9426df95f91a7f6c0158174718b71d7","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"382b732788ea8a5ff9f4e95cb65fd571b9426df95f91a7f6c0158174718b71d7","first_computed_at":"2026-05-18T03:57:53.814551Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T03:57:53.814551Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"kIEPZ1SwyefhGwH4FWEgSuzNkQwJtHEW1BnZ/fCN9IaDJudfCdvH3pqj5PmJHmB5FqAXCOEDfObKiYOn3nCWAA==","signature_status":"signed_v1","signed_at":"2026-05-18T03:57:53.815338Z","signed_message":"canonical_sha256_bytes"},"source_id":"0907.5281","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:965dadedc946ee03e967e81fadf421bc811d62b4f5743ed43b2142ae258f8cf1","sha256:1301e74e965e8d1f82461dccde4a0a644107c54520a5f87379f551bbc6925562"],"state_sha256":"44417faeb881c478ef6977c807efb0af6fdb38b59b7102cdf71f3952fcbb10d4"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"33aRJWmFJ2HdMo0NXtbQ4IlHPWufdOS0JmgqVcmBS2GG3g2nAW8wmnXsKyeEYbfnszNND3CGFczCz7Rqw1atDg==","signed_message":"bundle_sha256_bytes","signed_at":"2026-06-10T02:46:19.981871Z","bundle_sha256":"ca909d10f67bfbd9e38ee3dee7122358ba1a01696b4dac5caef6ee2a828c0016"}}