{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2020:KZUOB27IDQ2YSUADXD5LK5FUMI","short_pith_number":"pith:KZUOB27I","canonical_record":{"source":{"id":"2008.04786","kind":"arxiv","version":2},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.mtrl-sci","submitted_at":"2020-08-11T15:28:26Z","cross_cats_sorted":[],"title_canon_sha256":"84d5cc7a38fd2b0e80b84ab9d7130652cb5f59fc886118cc98253e1433a1249f","abstract_canon_sha256":"b3e5d974af26bf4c387d56d771c59d8dbd173f3614925e8d820ca1ce632c13d3"},"schema_version":"1.0"},"canonical_sha256":"5668e0ebe81c35895003b8fab574b462383ff752fc86d133a50319471f3b63c8","source":{"kind":"arxiv","id":"2008.04786","version":2},"source_aliases":[{"alias_kind":"arxiv","alias_value":"2008.04786","created_at":"2026-07-05T02:21:17Z"},{"alias_kind":"arxiv_version","alias_value":"2008.04786v2","created_at":"2026-07-05T02:21:17Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.2008.04786","created_at":"2026-07-05T02:21:17Z"},{"alias_kind":"pith_short_12","alias_value":"KZUOB27IDQ2Y","created_at":"2026-07-05T02:21:17Z"},{"alias_kind":"pith_short_16","alias_value":"KZUOB27IDQ2YSUAD","created_at":"2026-07-05T02:21:17Z"},{"alias_kind":"pith_short_8","alias_value":"KZUOB27I","created_at":"2026-07-05T02:21:17Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2020:KZUOB27IDQ2YSUADXD5LK5FUMI","target":"record","payload":{"canonical_record":{"source":{"id":"2008.04786","kind":"arxiv","version":2},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.mtrl-sci","submitted_at":"2020-08-11T15:28:26Z","cross_cats_sorted":[],"title_canon_sha256":"84d5cc7a38fd2b0e80b84ab9d7130652cb5f59fc886118cc98253e1433a1249f","abstract_canon_sha256":"b3e5d974af26bf4c387d56d771c59d8dbd173f3614925e8d820ca1ce632c13d3"},"schema_version":"1.0"},"canonical_sha256":"5668e0ebe81c35895003b8fab574b462383ff752fc86d133a50319471f3b63c8","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-07-05T02:21:17.374426Z","signature_b64":"oBd1yWmi14m+5wCk0k9vQGt2bBgZ5h57FMYWIAn5ORZkAaXgIPnC+ag9q8jdFxlXN8nz64ns7ZnOb9iHq13xCg==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"5668e0ebe81c35895003b8fab574b462383ff752fc86d133a50319471f3b63c8","last_reissued_at":"2026-07-05T02:21:17.373989Z","signature_status":"signed_v1","first_computed_at":"2026-07-05T02:21:17.373989Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"2008.04786","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":"2026-07-05T02:21:17Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"AMkfMXp5HTJiS5pUQsGLZh3fy5Yw998qwKkta4CRBg/Rv4s7ogNLOSiN63Sh8wZyh9GvrwmrDW3hluSiOamsBA==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-08-17T23:26:54.418669Z"},"content_sha256":"f6a5bf78751a7d50c68a223ec496b7ebef3f6e0633354c155f9c2915cb75c077","schema_version":"1.0","event_id":"sha256:f6a5bf78751a7d50c68a223ec496b7ebef3f6e0633354c155f9c2915cb75c077"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2020:KZUOB27IDQ2YSUADXD5LK5FUMI","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Impedance spectroscopy of ferroelectrics: The domain wall pinning element","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"cond-mat.mtrl-sci","authors_text":"C. J. Burkhardt, D. Koelle, M. Becker, R. Kleiner","submitted_at":"2020-08-11T15:28:26Z","abstract_excerpt":"We introduce an equivalent-circuit element based on the theory of interface pinning in random systems, to analyze the contribution of domain wall motion below the coercive field to the impedance of a ferroelectric, as a function of amplitude $E_0$ and frequency $f$ of an applied ac electric field. We investigate capacitor stacks, containing ferroelectric 0.5(Ba$_{0.7}$Ca$_{0.3}$)TiO$_{3}$--0.5Ba(Zr$_{0.2}$Ti$_{0.8}$)O$_{3}$ (BCZT) thin films, epitaxially grown by pulsed laser deposition on Nb-doped SrTiO$_3$ single crystal substrates and covered with Au electrodes. Impedance spectra from $f=10"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2008.04786","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/2008.04786/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":"2026-07-05T02:21:17Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"d5KLHckVlT/HEOvdjynnW4j5JP4Ya9CB50YoUI97jX+1joKWfRliw+sKJNJFXrEYFdFIrUDR5TZ3bcqU8rYWBg==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-08-17T23:26:54.420450Z"},"content_sha256":"e49ab13ed049f28fa49a07822cce89940a595b9402b3c7d653592b508988a0ef","schema_version":"1.0","event_id":"sha256:e49ab13ed049f28fa49a07822cce89940a595b9402b3c7d653592b508988a0ef"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/KZUOB27IDQ2YSUADXD5LK5FUMI/bundle.json","state_url":"https://pith.science/pith/KZUOB27IDQ2YSUADXD5LK5FUMI/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/KZUOB27IDQ2YSUADXD5LK5FUMI/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":"2026-08-17T23:26:54Z","links":{"resolver":"https://pith.science/pith/KZUOB27IDQ2YSUADXD5LK5FUMI","bundle":"https://pith.science/pith/KZUOB27IDQ2YSUADXD5LK5FUMI/bundle.json","state":"https://pith.science/pith/KZUOB27IDQ2YSUADXD5LK5FUMI/state.json","well_known_bundle":"https://pith.science/.well-known/pith/KZUOB27IDQ2YSUADXD5LK5FUMI/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2020:KZUOB27IDQ2YSUADXD5LK5FUMI","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":"b3e5d974af26bf4c387d56d771c59d8dbd173f3614925e8d820ca1ce632c13d3","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.mtrl-sci","submitted_at":"2020-08-11T15:28:26Z","title_canon_sha256":"84d5cc7a38fd2b0e80b84ab9d7130652cb5f59fc886118cc98253e1433a1249f"},"schema_version":"1.0","source":{"id":"2008.04786","kind":"arxiv","version":2}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"2008.04786","created_at":"2026-07-05T02:21:17Z"},{"alias_kind":"arxiv_version","alias_value":"2008.04786v2","created_at":"2026-07-05T02:21:17Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.2008.04786","created_at":"2026-07-05T02:21:17Z"},{"alias_kind":"pith_short_12","alias_value":"KZUOB27IDQ2Y","created_at":"2026-07-05T02:21:17Z"},{"alias_kind":"pith_short_16","alias_value":"KZUOB27IDQ2YSUAD","created_at":"2026-07-05T02:21:17Z"},{"alias_kind":"pith_short_8","alias_value":"KZUOB27I","created_at":"2026-07-05T02:21:17Z"}],"graph_snapshots":[{"event_id":"sha256:e49ab13ed049f28fa49a07822cce89940a595b9402b3c7d653592b508988a0ef","target":"graph","created_at":"2026-07-05T02:21:17Z","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/2008.04786/integrity.json","findings":[],"snapshot_sha256":"c28c3603d3b5d939e8dc4c7e95fa8dfce3d595e45f758748cecf8e644a296938","summary":{"advisory":0,"by_detector":{},"critical":0,"informational":0}},"paper":{"abstract_excerpt":"We introduce an equivalent-circuit element based on the theory of interface pinning in random systems, to analyze the contribution of domain wall motion below the coercive field to the impedance of a ferroelectric, as a function of amplitude $E_0$ and frequency $f$ of an applied ac electric field. We investigate capacitor stacks, containing ferroelectric 0.5(Ba$_{0.7}$Ca$_{0.3}$)TiO$_{3}$--0.5Ba(Zr$_{0.2}$Ti$_{0.8}$)O$_{3}$ (BCZT) thin films, epitaxially grown by pulsed laser deposition on Nb-doped SrTiO$_3$ single crystal substrates and covered with Au electrodes. Impedance spectra from $f=10","authors_text":"C. J. Burkhardt, D. Koelle, M. Becker, R. Kleiner","cross_cats":[],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.mtrl-sci","submitted_at":"2020-08-11T15:28:26Z","title":"Impedance spectroscopy of ferroelectrics: The domain wall pinning element"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2008.04786","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:f6a5bf78751a7d50c68a223ec496b7ebef3f6e0633354c155f9c2915cb75c077","target":"record","created_at":"2026-07-05T02:21:17Z","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":"b3e5d974af26bf4c387d56d771c59d8dbd173f3614925e8d820ca1ce632c13d3","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.mtrl-sci","submitted_at":"2020-08-11T15:28:26Z","title_canon_sha256":"84d5cc7a38fd2b0e80b84ab9d7130652cb5f59fc886118cc98253e1433a1249f"},"schema_version":"1.0","source":{"id":"2008.04786","kind":"arxiv","version":2}},"canonical_sha256":"5668e0ebe81c35895003b8fab574b462383ff752fc86d133a50319471f3b63c8","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"5668e0ebe81c35895003b8fab574b462383ff752fc86d133a50319471f3b63c8","first_computed_at":"2026-07-05T02:21:17.373989Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-07-05T02:21:17.373989Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"oBd1yWmi14m+5wCk0k9vQGt2bBgZ5h57FMYWIAn5ORZkAaXgIPnC+ag9q8jdFxlXN8nz64ns7ZnOb9iHq13xCg==","signature_status":"signed_v1","signed_at":"2026-07-05T02:21:17.374426Z","signed_message":"canonical_sha256_bytes"},"source_id":"2008.04786","source_kind":"arxiv","source_version":2}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:f6a5bf78751a7d50c68a223ec496b7ebef3f6e0633354c155f9c2915cb75c077","sha256:e49ab13ed049f28fa49a07822cce89940a595b9402b3c7d653592b508988a0ef"],"state_sha256":"fd601c55bd7fa740d218966cf593d9c5b365f3b54dcc60e09d3d653ce5eb34c4"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"N1VqbCMGjUsGLB9Dq98wGS9cLLcEsU69m0rn7SXCFgRDk5vDNPzu+16xYUCeQlTfM68i9neZ4QPP9u8gJXE3DQ==","signed_message":"bundle_sha256_bytes","signed_at":"2026-08-17T23:26:54.505912Z","bundle_sha256":"88ee1bfd459cba16ebd79e08e04c2cc3939dfb356f5a335e16579c6e701e4e5f"}}