{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2015:I2JECL6N36GSVCKKZJPWEL6GNB","short_pith_number":"pith:I2JECL6N","canonical_record":{"source":{"id":"1504.02629","kind":"arxiv","version":6},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.mtrl-sci","submitted_at":"2015-04-10T10:09:14Z","cross_cats_sorted":[],"title_canon_sha256":"1d1f84662356cc08cc6e79f49c0140fc2df4f8d6781a828e0802457fd504d797","abstract_canon_sha256":"e61949b7f56d6d388adefab6ffdb0338e2399dc4da6ef28fc91b934f2dbfcaff"},"schema_version":"1.0"},"canonical_sha256":"4692412fcddf8d2a894aca5f622fc668528a3b483fd10292d132577d83569db2","source":{"kind":"arxiv","id":"1504.02629","version":6},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1504.02629","created_at":"2026-05-18T00:13:48Z"},{"alias_kind":"arxiv_version","alias_value":"1504.02629v6","created_at":"2026-05-18T00:13:48Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1504.02629","created_at":"2026-05-18T00:13:48Z"},{"alias_kind":"pith_short_12","alias_value":"I2JECL6N36GS","created_at":"2026-05-18T12:29:25Z"},{"alias_kind":"pith_short_16","alias_value":"I2JECL6N36GSVCKK","created_at":"2026-05-18T12:29:25Z"},{"alias_kind":"pith_short_8","alias_value":"I2JECL6N","created_at":"2026-05-18T12:29:25Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2015:I2JECL6N36GSVCKKZJPWEL6GNB","target":"record","payload":{"canonical_record":{"source":{"id":"1504.02629","kind":"arxiv","version":6},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.mtrl-sci","submitted_at":"2015-04-10T10:09:14Z","cross_cats_sorted":[],"title_canon_sha256":"1d1f84662356cc08cc6e79f49c0140fc2df4f8d6781a828e0802457fd504d797","abstract_canon_sha256":"e61949b7f56d6d388adefab6ffdb0338e2399dc4da6ef28fc91b934f2dbfcaff"},"schema_version":"1.0"},"canonical_sha256":"4692412fcddf8d2a894aca5f622fc668528a3b483fd10292d132577d83569db2","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-18T00:13:48.615931Z","signature_b64":"84eGHL2xjI5kdi2FW0EdrbnPWccVBb51kmVYuwX8F0Pi9/i0tbCsooEr6P99uigdDqr1QDfcnjk1s93+MTHBDg==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"4692412fcddf8d2a894aca5f622fc668528a3b483fd10292d132577d83569db2","last_reissued_at":"2026-05-18T00:13:48.615334Z","signature_status":"signed_v1","first_computed_at":"2026-05-18T00:13:48.615334Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"1504.02629","source_version":6,"attestation_state":"computed"},"signer":{"signer_id":"pith.science","signer_type":"pith_registry","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"created_at":"2026-05-18T00:13:48Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"lCvucJoruL+2WxSPo4J4Lmr2SeTfVsj1TGzU2/es7qD5RiIIwptsqBkYbzDE3mvWmp9E9vzZBprxqFSAhTV0Bw==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-06-03T00:20:04.203653Z"},"content_sha256":"f8da713f8e356c602a3cb5ecb557e07e25295cd34bfabc8d1b02311c5a1edd9e","schema_version":"1.0","event_id":"sha256:f8da713f8e356c602a3cb5ecb557e07e25295cd34bfabc8d1b02311c5a1edd9e"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2015:I2JECL6N36GSVCKKZJPWEL6GNB","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Variation of magnetic properties of Sr$_2$FeMoO$_6$ due to oxygen vacancies","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"cond-mat.mtrl-sci","authors_text":"Arthur Ernst, Kalevi Kokko, Lev V. Bekenov, Martin Hoffmann, Victor N. Antonov, Wolfram Hergert","submitted_at":"2015-04-10T10:09:14Z","abstract_excerpt":"Oxygen vacancies can be of utmost importance for improving or deteriorating physical properties of oxide materials. Here, we studied from first-principles the electronic and magnetic properties of oxygen vacancies in the double perovskite Sr$_2$FeMoO$_6$ (SFMO). We show that oxygen vacancies can increase the Curie temperature in SFMO, although the total magnetic moment is reduced at the same time. We found also that the experimentally observed valence change of the Fe ions from $3+$ to $2+$ in the x-ray magnetic circular dichroism (XMCD) measurements is better explained by oxygen vacancies tha"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1504.02629","kind":"arxiv","version":6},"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":"2026-05-18T00:13:48Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"kGtBmKgWqn0nigb4SEhWUlzHXembSmO6YwJWGL1Jev2eRB2X9UWsdLnVEgS2EwrBjn5s1NFHgdA+F4gbWsizCw==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-06-03T00:20:04.203990Z"},"content_sha256":"99ae64e6de43c4887554c4b57e5a165a403d2da12d646334f3da5eef4fc65561","schema_version":"1.0","event_id":"sha256:99ae64e6de43c4887554c4b57e5a165a403d2da12d646334f3da5eef4fc65561"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/I2JECL6N36GSVCKKZJPWEL6GNB/bundle.json","state_url":"https://pith.science/pith/I2JECL6N36GSVCKKZJPWEL6GNB/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/I2JECL6N36GSVCKKZJPWEL6GNB/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":"2026-06-03T00:20:04Z","links":{"resolver":"https://pith.science/pith/I2JECL6N36GSVCKKZJPWEL6GNB","bundle":"https://pith.science/pith/I2JECL6N36GSVCKKZJPWEL6GNB/bundle.json","state":"https://pith.science/pith/I2JECL6N36GSVCKKZJPWEL6GNB/state.json","well_known_bundle":"https://pith.science/.well-known/pith/I2JECL6N36GSVCKKZJPWEL6GNB/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2015:I2JECL6N36GSVCKKZJPWEL6GNB","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":"e61949b7f56d6d388adefab6ffdb0338e2399dc4da6ef28fc91b934f2dbfcaff","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.mtrl-sci","submitted_at":"2015-04-10T10:09:14Z","title_canon_sha256":"1d1f84662356cc08cc6e79f49c0140fc2df4f8d6781a828e0802457fd504d797"},"schema_version":"1.0","source":{"id":"1504.02629","kind":"arxiv","version":6}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1504.02629","created_at":"2026-05-18T00:13:48Z"},{"alias_kind":"arxiv_version","alias_value":"1504.02629v6","created_at":"2026-05-18T00:13:48Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1504.02629","created_at":"2026-05-18T00:13:48Z"},{"alias_kind":"pith_short_12","alias_value":"I2JECL6N36GS","created_at":"2026-05-18T12:29:25Z"},{"alias_kind":"pith_short_16","alias_value":"I2JECL6N36GSVCKK","created_at":"2026-05-18T12:29:25Z"},{"alias_kind":"pith_short_8","alias_value":"I2JECL6N","created_at":"2026-05-18T12:29:25Z"}],"graph_snapshots":[{"event_id":"sha256:99ae64e6de43c4887554c4b57e5a165a403d2da12d646334f3da5eef4fc65561","target":"graph","created_at":"2026-05-18T00:13:48Z","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":"Oxygen vacancies can be of utmost importance for improving or deteriorating physical properties of oxide materials. Here, we studied from first-principles the electronic and magnetic properties of oxygen vacancies in the double perovskite Sr$_2$FeMoO$_6$ (SFMO). We show that oxygen vacancies can increase the Curie temperature in SFMO, although the total magnetic moment is reduced at the same time. We found also that the experimentally observed valence change of the Fe ions from $3+$ to $2+$ in the x-ray magnetic circular dichroism (XMCD) measurements is better explained by oxygen vacancies tha","authors_text":"Arthur Ernst, Kalevi Kokko, Lev V. Bekenov, Martin Hoffmann, Victor N. Antonov, Wolfram Hergert","cross_cats":[],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.mtrl-sci","submitted_at":"2015-04-10T10:09:14Z","title":"Variation of magnetic properties of Sr$_2$FeMoO$_6$ due to oxygen vacancies"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1504.02629","kind":"arxiv","version":6},"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:f8da713f8e356c602a3cb5ecb557e07e25295cd34bfabc8d1b02311c5a1edd9e","target":"record","created_at":"2026-05-18T00:13:48Z","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":"e61949b7f56d6d388adefab6ffdb0338e2399dc4da6ef28fc91b934f2dbfcaff","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.mtrl-sci","submitted_at":"2015-04-10T10:09:14Z","title_canon_sha256":"1d1f84662356cc08cc6e79f49c0140fc2df4f8d6781a828e0802457fd504d797"},"schema_version":"1.0","source":{"id":"1504.02629","kind":"arxiv","version":6}},"canonical_sha256":"4692412fcddf8d2a894aca5f622fc668528a3b483fd10292d132577d83569db2","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"4692412fcddf8d2a894aca5f622fc668528a3b483fd10292d132577d83569db2","first_computed_at":"2026-05-18T00:13:48.615334Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T00:13:48.615334Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"84eGHL2xjI5kdi2FW0EdrbnPWccVBb51kmVYuwX8F0Pi9/i0tbCsooEr6P99uigdDqr1QDfcnjk1s93+MTHBDg==","signature_status":"signed_v1","signed_at":"2026-05-18T00:13:48.615931Z","signed_message":"canonical_sha256_bytes"},"source_id":"1504.02629","source_kind":"arxiv","source_version":6}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:f8da713f8e356c602a3cb5ecb557e07e25295cd34bfabc8d1b02311c5a1edd9e","sha256:99ae64e6de43c4887554c4b57e5a165a403d2da12d646334f3da5eef4fc65561"],"state_sha256":"8698e49610082b4d7282f9e502f7d48ef0b1955f1cd3d3b487cd9cf9bce37794"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"zr8qjVbZQYmu/x1K9lBwu21wIJjPEDKJOqSOhWqLj17QWTxI0NM0mr8BCtCZooe4TMA1beZ0rED9f1mI7U7MCw==","signed_message":"bundle_sha256_bytes","signed_at":"2026-06-03T00:20:04.205914Z","bundle_sha256":"871c24b7fdaa3ed8c878be6ecc256e249a2ff40aa68dced7356c9536eb026fac"}}