{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2005:MIAI5FUQC3NQVQMCGHIOOLKM53","short_pith_number":"pith:MIAI5FUQ","canonical_record":{"source":{"id":"cond-mat/0508362","kind":"arxiv","version":2},"metadata":{"license":"","primary_cat":"cond-mat.mtrl-sci","submitted_at":"2005-08-15T22:07:21Z","cross_cats_sorted":["cond-mat.str-el"],"title_canon_sha256":"bdeddacdad88990fdf050d10f8cc4a5eff3eab1974766c7835a722872c59a5d2","abstract_canon_sha256":"336a52e34f4fd3e95255affd093191343e6fa9028376beda9afd908cd1564255"},"schema_version":"1.0"},"canonical_sha256":"62008e969016db0ac18231d0e72d4ceee179f0a10f39dfce7c91564d0dbe67f8","source":{"kind":"arxiv","id":"cond-mat/0508362","version":2},"source_aliases":[{"alias_kind":"arxiv","alias_value":"cond-mat/0508362","created_at":"2026-07-04T14:48:52Z"},{"alias_kind":"arxiv_version","alias_value":"cond-mat/0508362v2","created_at":"2026-07-04T14:48:52Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.cond-mat/0508362","created_at":"2026-07-04T14:48:52Z"},{"alias_kind":"pith_short_12","alias_value":"MIAI5FUQC3NQ","created_at":"2026-07-04T14:48:52Z"},{"alias_kind":"pith_short_16","alias_value":"MIAI5FUQC3NQVQMC","created_at":"2026-07-04T14:48:52Z"},{"alias_kind":"pith_short_8","alias_value":"MIAI5FUQ","created_at":"2026-07-04T14:48:52Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2005:MIAI5FUQC3NQVQMCGHIOOLKM53","target":"record","payload":{"canonical_record":{"source":{"id":"cond-mat/0508362","kind":"arxiv","version":2},"metadata":{"license":"","primary_cat":"cond-mat.mtrl-sci","submitted_at":"2005-08-15T22:07:21Z","cross_cats_sorted":["cond-mat.str-el"],"title_canon_sha256":"bdeddacdad88990fdf050d10f8cc4a5eff3eab1974766c7835a722872c59a5d2","abstract_canon_sha256":"336a52e34f4fd3e95255affd093191343e6fa9028376beda9afd908cd1564255"},"schema_version":"1.0"},"canonical_sha256":"62008e969016db0ac18231d0e72d4ceee179f0a10f39dfce7c91564d0dbe67f8","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-07-04T14:48:52.618419Z","signature_b64":"bz6u56DoodmHCWLr4UQJOjLXx27vjR3mcRVqo01hIjhyM0ANmSXP3PttPKALBx66WDdcrhMvZyHovX+PaP1SBg==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"62008e969016db0ac18231d0e72d4ceee179f0a10f39dfce7c91564d0dbe67f8","last_reissued_at":"2026-07-04T14:48:52.618005Z","signature_status":"signed_v1","first_computed_at":"2026-07-04T14:48:52.618005Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"cond-mat/0508362","source_version":2,"attestation_state":"computed"},"signer":{"signer_id":"pith.science","signer_type":"pith_registry","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"created_at":"2026-07-04T14:48:52Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"A8/bsqR5A1JbE/1kQOhWza3iZWrI5fwND9L5bZLUTNMbNdTvoLlkJG6Fs3wJA/08/MWN4RdK1HGqWqMBk1MsDg==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-07-25T12:40:39.033921Z"},"content_sha256":"bafeb62e575030c168b178387e5fea0b1705952540979d395e4740666f5c3f2d","schema_version":"1.0","event_id":"sha256:bafeb62e575030c168b178387e5fea0b1705952540979d395e4740666f5c3f2d"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2005:MIAI5FUQC3NQVQMCGHIOOLKM53","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"First principles study of the multiferroics BiFeO$_{3}$, Bi$_{2}$FeCrO$_{6}$, and BiCrO$_{3}$: Structure, polarization, and magnetic ordering temperature","license":"","headline":"","cross_cats":["cond-mat.str-el"],"primary_cat":"cond-mat.mtrl-sci","authors_text":"Claude Ederer, Nicola A. Spaldin, Pio Baettig","submitted_at":"2005-08-15T22:07:21Z","abstract_excerpt":"We present results of an {\\it ab initio} density functional theory study of three bismuth-based multiferroics, BiFeO$_{3}$, Bi$_{2}$FeCrO$_{6}$, and BiCrO$_{3}$. We disuss differences in the crystal and electronic structure of the three systems, and we show that the application of the LDA+$U$ method is essential to obtain realistic structural parameters for Bi$_{2}$FeCrO$_{6}$. We calculate the magnetic nearest neighbor coupling constants for all three systems and show how Anderson's theory of superexchange can be applied to explain the signs and relative magnitudes of these coupling constants"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"cond-mat/0508362","kind":"arxiv","version":2},"verdict":{"id":null,"model_set":{},"created_at":null,"strongest_claim":"","one_line_summary":"","pipeline_version":null,"weakest_assumption":"","pith_extraction_headline":""},"integrity":{"clean":true,"summary":{"advisory":0,"critical":0,"by_detector":{},"informational":0},"endpoint":"/pith/cond-mat/0508362/integrity.json","findings":[],"available":true,"detectors_run":[],"snapshot_sha256":"c28c3603d3b5d939e8dc4c7e95fa8dfce3d595e45f758748cecf8e644a296938"},"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":"2026-07-04T14:48:52Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"By8EVHk+JPunZy7kEuuPISOPK0M81YrN20pqqyDasG3Esq8EGGJKA7ntxfBuRkGG+Kw4mICe4WVwAfqigPCqCQ==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-07-25T12:40:39.034416Z"},"content_sha256":"4008bb62c4b864370e47bb614e29c4d941efd1c038953be306c4b7dad92a2b89","schema_version":"1.0","event_id":"sha256:4008bb62c4b864370e47bb614e29c4d941efd1c038953be306c4b7dad92a2b89"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/MIAI5FUQC3NQVQMCGHIOOLKM53/bundle.json","state_url":"https://pith.science/pith/MIAI5FUQC3NQVQMCGHIOOLKM53/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/MIAI5FUQC3NQVQMCGHIOOLKM53/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":"2026-07-25T12:40:39Z","links":{"resolver":"https://pith.science/pith/MIAI5FUQC3NQVQMCGHIOOLKM53","bundle":"https://pith.science/pith/MIAI5FUQC3NQVQMCGHIOOLKM53/bundle.json","state":"https://pith.science/pith/MIAI5FUQC3NQVQMCGHIOOLKM53/state.json","well_known_bundle":"https://pith.science/.well-known/pith/MIAI5FUQC3NQVQMCGHIOOLKM53/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2005:MIAI5FUQC3NQVQMCGHIOOLKM53","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":"336a52e34f4fd3e95255affd093191343e6fa9028376beda9afd908cd1564255","cross_cats_sorted":["cond-mat.str-el"],"license":"","primary_cat":"cond-mat.mtrl-sci","submitted_at":"2005-08-15T22:07:21Z","title_canon_sha256":"bdeddacdad88990fdf050d10f8cc4a5eff3eab1974766c7835a722872c59a5d2"},"schema_version":"1.0","source":{"id":"cond-mat/0508362","kind":"arxiv","version":2}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"cond-mat/0508362","created_at":"2026-07-04T14:48:52Z"},{"alias_kind":"arxiv_version","alias_value":"cond-mat/0508362v2","created_at":"2026-07-04T14:48:52Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.cond-mat/0508362","created_at":"2026-07-04T14:48:52Z"},{"alias_kind":"pith_short_12","alias_value":"MIAI5FUQC3NQ","created_at":"2026-07-04T14:48:52Z"},{"alias_kind":"pith_short_16","alias_value":"MIAI5FUQC3NQVQMC","created_at":"2026-07-04T14:48:52Z"},{"alias_kind":"pith_short_8","alias_value":"MIAI5FUQ","created_at":"2026-07-04T14:48:52Z"}],"graph_snapshots":[{"event_id":"sha256:4008bb62c4b864370e47bb614e29c4d941efd1c038953be306c4b7dad92a2b89","target":"graph","created_at":"2026-07-04T14:48:52Z","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"},"integrity":{"available":true,"clean":true,"detectors_run":[],"endpoint":"/pith/cond-mat/0508362/integrity.json","findings":[],"snapshot_sha256":"c28c3603d3b5d939e8dc4c7e95fa8dfce3d595e45f758748cecf8e644a296938","summary":{"advisory":0,"by_detector":{},"critical":0,"informational":0}},"paper":{"abstract_excerpt":"We present results of an {\\it ab initio} density functional theory study of three bismuth-based multiferroics, BiFeO$_{3}$, Bi$_{2}$FeCrO$_{6}$, and BiCrO$_{3}$. We disuss differences in the crystal and electronic structure of the three systems, and we show that the application of the LDA+$U$ method is essential to obtain realistic structural parameters for Bi$_{2}$FeCrO$_{6}$. We calculate the magnetic nearest neighbor coupling constants for all three systems and show how Anderson's theory of superexchange can be applied to explain the signs and relative magnitudes of these coupling constants","authors_text":"Claude Ederer, Nicola A. Spaldin, Pio Baettig","cross_cats":["cond-mat.str-el"],"headline":"","license":"","primary_cat":"cond-mat.mtrl-sci","submitted_at":"2005-08-15T22:07:21Z","title":"First principles study of the multiferroics BiFeO$_{3}$, Bi$_{2}$FeCrO$_{6}$, and BiCrO$_{3}$: Structure, polarization, and magnetic ordering temperature"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"cond-mat/0508362","kind":"arxiv","version":2},"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:bafeb62e575030c168b178387e5fea0b1705952540979d395e4740666f5c3f2d","target":"record","created_at":"2026-07-04T14:48:52Z","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":"336a52e34f4fd3e95255affd093191343e6fa9028376beda9afd908cd1564255","cross_cats_sorted":["cond-mat.str-el"],"license":"","primary_cat":"cond-mat.mtrl-sci","submitted_at":"2005-08-15T22:07:21Z","title_canon_sha256":"bdeddacdad88990fdf050d10f8cc4a5eff3eab1974766c7835a722872c59a5d2"},"schema_version":"1.0","source":{"id":"cond-mat/0508362","kind":"arxiv","version":2}},"canonical_sha256":"62008e969016db0ac18231d0e72d4ceee179f0a10f39dfce7c91564d0dbe67f8","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"62008e969016db0ac18231d0e72d4ceee179f0a10f39dfce7c91564d0dbe67f8","first_computed_at":"2026-07-04T14:48:52.618005Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-07-04T14:48:52.618005Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"bz6u56DoodmHCWLr4UQJOjLXx27vjR3mcRVqo01hIjhyM0ANmSXP3PttPKALBx66WDdcrhMvZyHovX+PaP1SBg==","signature_status":"signed_v1","signed_at":"2026-07-04T14:48:52.618419Z","signed_message":"canonical_sha256_bytes"},"source_id":"cond-mat/0508362","source_kind":"arxiv","source_version":2}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:bafeb62e575030c168b178387e5fea0b1705952540979d395e4740666f5c3f2d","sha256:4008bb62c4b864370e47bb614e29c4d941efd1c038953be306c4b7dad92a2b89"],"state_sha256":"988681f09f76edeee679b142169d7935886c5cf97ee516897f835ca7115ea0d2"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"8/FL5aHvG1kkIjpwWQwntwAmukFOXBRH9jMTOKBZuVbYbC2sfvxJX9+k7FPbpL2P49iRq/Fn1afR+7nSqVdVDg==","signed_message":"bundle_sha256_bytes","signed_at":"2026-07-25T12:40:39.036642Z","bundle_sha256":"34fe5dece6170194c0ac5f84e36a0bbf55f47ff5415deec2e567263cdfdadd1b"}}