{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2021:67HK7Z7D5BMPW2EQ2REIHX7NV4","short_pith_number":"pith:67HK7Z7D","canonical_record":{"source":{"id":"2102.02451","kind":"arxiv","version":1},"metadata":{"license":"http://creativecommons.org/licenses/by-nc-sa/4.0/","primary_cat":"cond-mat.mtrl-sci","submitted_at":"2021-02-04T07:19:36Z","cross_cats_sorted":[],"title_canon_sha256":"f4749477c320f2bb75b6dad0486580e812bf4cc45e987a0e5efca172e1d98aee","abstract_canon_sha256":"41ddc3fed8d7d6983be2baa770d5d73e5561654ba04e1a9aa049885851121d8c"},"schema_version":"1.0"},"canonical_sha256":"f7ceafe7e3e858fb6890d44883dfedaf1353e0ad588c2055f8cdefb5d72c1961","source":{"kind":"arxiv","id":"2102.02451","version":1},"source_aliases":[{"alias_kind":"arxiv","alias_value":"2102.02451","created_at":"2026-07-05T02:12:48Z"},{"alias_kind":"arxiv_version","alias_value":"2102.02451v1","created_at":"2026-07-05T02:12:48Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.2102.02451","created_at":"2026-07-05T02:12:48Z"},{"alias_kind":"pith_short_12","alias_value":"67HK7Z7D5BMP","created_at":"2026-07-05T02:12:48Z"},{"alias_kind":"pith_short_16","alias_value":"67HK7Z7D5BMPW2EQ","created_at":"2026-07-05T02:12:48Z"},{"alias_kind":"pith_short_8","alias_value":"67HK7Z7D","created_at":"2026-07-05T02:12:48Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2021:67HK7Z7D5BMPW2EQ2REIHX7NV4","target":"record","payload":{"canonical_record":{"source":{"id":"2102.02451","kind":"arxiv","version":1},"metadata":{"license":"http://creativecommons.org/licenses/by-nc-sa/4.0/","primary_cat":"cond-mat.mtrl-sci","submitted_at":"2021-02-04T07:19:36Z","cross_cats_sorted":[],"title_canon_sha256":"f4749477c320f2bb75b6dad0486580e812bf4cc45e987a0e5efca172e1d98aee","abstract_canon_sha256":"41ddc3fed8d7d6983be2baa770d5d73e5561654ba04e1a9aa049885851121d8c"},"schema_version":"1.0"},"canonical_sha256":"f7ceafe7e3e858fb6890d44883dfedaf1353e0ad588c2055f8cdefb5d72c1961","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-07-05T02:12:48.831689Z","signature_b64":"ea5JH5vScIFyOT+y+XiGjVDvcQea9Aw5Wu9r6vCidUwUF6Wl1VGrjxzoZL0O8OR8Y/T205H1lviUR/6+xplvDQ==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"f7ceafe7e3e858fb6890d44883dfedaf1353e0ad588c2055f8cdefb5d72c1961","last_reissued_at":"2026-07-05T02:12:48.831263Z","signature_status":"signed_v1","first_computed_at":"2026-07-05T02:12:48.831263Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"2102.02451","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":"2026-07-05T02:12:48Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"DPGyj5xdReYIHER5SYZpXyueyJkcjYK9B/mhL2sbfiookJkpmQivh3XYeP1uCAzyH7AXus4VCzMIO3ZnWBCRDQ==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-08-17T01:06:12.245259Z"},"content_sha256":"308d91ac9b0d71b3a301e4beff5a3b5c9175d2d87e4dc7561fbe2e036e1e677e","schema_version":"1.0","event_id":"sha256:308d91ac9b0d71b3a301e4beff5a3b5c9175d2d87e4dc7561fbe2e036e1e677e"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2021:67HK7Z7D5BMPW2EQ2REIHX7NV4","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"The critical role of stereochemically active lone pair in introducing high temperature ferroelectricity","license":"http://creativecommons.org/licenses/by-nc-sa/4.0/","headline":"","cross_cats":[],"primary_cat":"cond-mat.mtrl-sci","authors_text":"Anita Halder, Desheng Fu, Mitsuru Itoh, Rafikul Ali Saha, Sugata Ray, Tanusri Saha-Dasgupta","submitted_at":"2021-02-04T07:19:36Z","abstract_excerpt":"In this paper a comparative structural, dielectric and magnetic study of two langasite compounds Ba$_3$TeCo$_3$P$_2$O$_{14}$ (absence of lone pair) and Pb$_3$TeCo$_3$P$_2$O$_{14}$ (Pb$^{2+}$ 6$s^2$ lone pair) have been carried out to precisely explore the development of room temperature spontaneous polarization in presence of stereochemically active lone pair. In case of Pb$_3$TeCo$_3$P$_2$O$_{14}$, mixing of both Pb 6$s$ with Pb 6$p$ and O 2$p$ help the lone pair to be stereochemically active. This stereochemically active lone pair brings a large structural distortion within the unit cell and"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2102.02451","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":""},"integrity":{"clean":true,"summary":{"advisory":0,"critical":0,"by_detector":{},"informational":0},"endpoint":"/pith/2102.02451/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":"2026-07-05T02:12:48Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"pbfit85Orx/Jlf5DaGNN/pC6RitxoXbSkg4eG6WI4KcrA9b5v4QqzhiWkc7/ys2gRlS6WPRn+B600vHJX+zpCQ==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-08-17T01:06:12.246191Z"},"content_sha256":"dcd3df81a7df25225a8f5a7a536b5011dad367d45195a1e3119b77ac0503e443","schema_version":"1.0","event_id":"sha256:dcd3df81a7df25225a8f5a7a536b5011dad367d45195a1e3119b77ac0503e443"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/67HK7Z7D5BMPW2EQ2REIHX7NV4/bundle.json","state_url":"https://pith.science/pith/67HK7Z7D5BMPW2EQ2REIHX7NV4/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/67HK7Z7D5BMPW2EQ2REIHX7NV4/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":"2026-08-17T01:06:12Z","links":{"resolver":"https://pith.science/pith/67HK7Z7D5BMPW2EQ2REIHX7NV4","bundle":"https://pith.science/pith/67HK7Z7D5BMPW2EQ2REIHX7NV4/bundle.json","state":"https://pith.science/pith/67HK7Z7D5BMPW2EQ2REIHX7NV4/state.json","well_known_bundle":"https://pith.science/.well-known/pith/67HK7Z7D5BMPW2EQ2REIHX7NV4/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2021:67HK7Z7D5BMPW2EQ2REIHX7NV4","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":"41ddc3fed8d7d6983be2baa770d5d73e5561654ba04e1a9aa049885851121d8c","cross_cats_sorted":[],"license":"http://creativecommons.org/licenses/by-nc-sa/4.0/","primary_cat":"cond-mat.mtrl-sci","submitted_at":"2021-02-04T07:19:36Z","title_canon_sha256":"f4749477c320f2bb75b6dad0486580e812bf4cc45e987a0e5efca172e1d98aee"},"schema_version":"1.0","source":{"id":"2102.02451","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"2102.02451","created_at":"2026-07-05T02:12:48Z"},{"alias_kind":"arxiv_version","alias_value":"2102.02451v1","created_at":"2026-07-05T02:12:48Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.2102.02451","created_at":"2026-07-05T02:12:48Z"},{"alias_kind":"pith_short_12","alias_value":"67HK7Z7D5BMP","created_at":"2026-07-05T02:12:48Z"},{"alias_kind":"pith_short_16","alias_value":"67HK7Z7D5BMPW2EQ","created_at":"2026-07-05T02:12:48Z"},{"alias_kind":"pith_short_8","alias_value":"67HK7Z7D","created_at":"2026-07-05T02:12:48Z"}],"graph_snapshots":[{"event_id":"sha256:dcd3df81a7df25225a8f5a7a536b5011dad367d45195a1e3119b77ac0503e443","target":"graph","created_at":"2026-07-05T02:12:48Z","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"},"integrity":{"available":true,"clean":true,"detectors_run":[],"endpoint":"/pith/2102.02451/integrity.json","findings":[],"snapshot_sha256":"c28c3603d3b5d939e8dc4c7e95fa8dfce3d595e45f758748cecf8e644a296938","summary":{"advisory":0,"by_detector":{},"critical":0,"informational":0}},"paper":{"abstract_excerpt":"In this paper a comparative structural, dielectric and magnetic study of two langasite compounds Ba$_3$TeCo$_3$P$_2$O$_{14}$ (absence of lone pair) and Pb$_3$TeCo$_3$P$_2$O$_{14}$ (Pb$^{2+}$ 6$s^2$ lone pair) have been carried out to precisely explore the development of room temperature spontaneous polarization in presence of stereochemically active lone pair. In case of Pb$_3$TeCo$_3$P$_2$O$_{14}$, mixing of both Pb 6$s$ with Pb 6$p$ and O 2$p$ help the lone pair to be stereochemically active. This stereochemically active lone pair brings a large structural distortion within the unit cell and","authors_text":"Anita Halder, Desheng Fu, Mitsuru Itoh, Rafikul Ali Saha, Sugata Ray, Tanusri Saha-Dasgupta","cross_cats":[],"headline":"","license":"http://creativecommons.org/licenses/by-nc-sa/4.0/","primary_cat":"cond-mat.mtrl-sci","submitted_at":"2021-02-04T07:19:36Z","title":"The critical role of stereochemically active lone pair in introducing high temperature ferroelectricity"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2102.02451","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":"sha256:308d91ac9b0d71b3a301e4beff5a3b5c9175d2d87e4dc7561fbe2e036e1e677e","target":"record","created_at":"2026-07-05T02:12:48Z","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":"41ddc3fed8d7d6983be2baa770d5d73e5561654ba04e1a9aa049885851121d8c","cross_cats_sorted":[],"license":"http://creativecommons.org/licenses/by-nc-sa/4.0/","primary_cat":"cond-mat.mtrl-sci","submitted_at":"2021-02-04T07:19:36Z","title_canon_sha256":"f4749477c320f2bb75b6dad0486580e812bf4cc45e987a0e5efca172e1d98aee"},"schema_version":"1.0","source":{"id":"2102.02451","kind":"arxiv","version":1}},"canonical_sha256":"f7ceafe7e3e858fb6890d44883dfedaf1353e0ad588c2055f8cdefb5d72c1961","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"f7ceafe7e3e858fb6890d44883dfedaf1353e0ad588c2055f8cdefb5d72c1961","first_computed_at":"2026-07-05T02:12:48.831263Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-07-05T02:12:48.831263Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"ea5JH5vScIFyOT+y+XiGjVDvcQea9Aw5Wu9r6vCidUwUF6Wl1VGrjxzoZL0O8OR8Y/T205H1lviUR/6+xplvDQ==","signature_status":"signed_v1","signed_at":"2026-07-05T02:12:48.831689Z","signed_message":"canonical_sha256_bytes"},"source_id":"2102.02451","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:308d91ac9b0d71b3a301e4beff5a3b5c9175d2d87e4dc7561fbe2e036e1e677e","sha256:dcd3df81a7df25225a8f5a7a536b5011dad367d45195a1e3119b77ac0503e443"],"state_sha256":"3af6a76eda212331be794c450b6bb1b7f2acb8a2997ed521c7dfb07acfff3b1e"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"40p5Hk7O+dEcFk6vBVvplolNElCNAOVY7H1TUmU94JB5yVauFoOhbxlbDz8jdO4M3DH2wZOkKfCjVMu3BLOyAw==","signed_message":"bundle_sha256_bytes","signed_at":"2026-08-17T01:06:12.251342Z","bundle_sha256":"33c0f2e67ef61422fbf0bfcbc44b34498efe3d4f89c4bd1b4e0b4dc1265888c6"}}