{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2014:6U6JPFWNXP4JKODEA2BBLKSWDM","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":"8b962c7334c567adb55b1f07b38d5d618f36ed548b07e439b9a2c89857253078","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.mtrl-sci","submitted_at":"2014-05-30T16:01:29Z","title_canon_sha256":"da064ace1b830ee99af393883dd19301708db975f326a4f6e4e6e543159acdd8"},"schema_version":"1.0","source":{"id":"1405.7901","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1405.7901","created_at":"2026-05-18T02:50:43Z"},{"alias_kind":"arxiv_version","alias_value":"1405.7901v1","created_at":"2026-05-18T02:50:43Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1405.7901","created_at":"2026-05-18T02:50:43Z"},{"alias_kind":"pith_short_12","alias_value":"6U6JPFWNXP4J","created_at":"2026-05-18T12:28:16Z"},{"alias_kind":"pith_short_16","alias_value":"6U6JPFWNXP4JKODE","created_at":"2026-05-18T12:28:16Z"},{"alias_kind":"pith_short_8","alias_value":"6U6JPFWN","created_at":"2026-05-18T12:28:16Z"}],"graph_snapshots":[{"event_id":"sha256:93043ac06f759947d75445f4b50a181aa7f31c62412abc8309eb84ba2f336a5c","target":"graph","created_at":"2026-05-18T02:50:43Z","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 address the question of how the electrocaloric effect in epitaxial thin films of the prototypical ferroelectric BaTiO$_3$ is affected by the clamping to the substrate and by substrate-induced misfit strain. We use molecular dynamics simulations and a first-principles-based effective Hamiltonian to calculate the adiabatic temperature change $\\Delta T$ under different epitaxial constraints. Our results demonstrate that, consistent with phenomenological theory, clamping by the substrate reduces the maximum $\\Delta T$ compared to bulk BaTiO$_3$. On the other hand, compressive misfit-strain lead","authors_text":"Claude Ederer, Madhura Marathe","cross_cats":[],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.mtrl-sci","submitted_at":"2014-05-30T16:01:29Z","title":"Electrocaloric effect in BaTiO$_3$: a first-principles-based study on the effect of misfit strain"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1405.7901","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":"sha256:020e1a5f5366076aff6e272c40de061954ccdb7c89538d995d41b7f110ffa185","target":"record","created_at":"2026-05-18T02:50:43Z","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":"8b962c7334c567adb55b1f07b38d5d618f36ed548b07e439b9a2c89857253078","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.mtrl-sci","submitted_at":"2014-05-30T16:01:29Z","title_canon_sha256":"da064ace1b830ee99af393883dd19301708db975f326a4f6e4e6e543159acdd8"},"schema_version":"1.0","source":{"id":"1405.7901","kind":"arxiv","version":1}},"canonical_sha256":"f53c9796cdbbf8953864068215aa561b2b59f978bc9611c97194f2f87ccfb47f","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"f53c9796cdbbf8953864068215aa561b2b59f978bc9611c97194f2f87ccfb47f","first_computed_at":"2026-05-18T02:50:43.752190Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T02:50:43.752190Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"Iu1CJULk/VkK/9ZcokmbdkcvJsgtnJFh9wSHbNPJjKxytf06g/iA/4QY0L/218yvpYh8zxF097uWKnL1DSymCg==","signature_status":"signed_v1","signed_at":"2026-05-18T02:50:43.752812Z","signed_message":"canonical_sha256_bytes"},"source_id":"1405.7901","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:020e1a5f5366076aff6e272c40de061954ccdb7c89538d995d41b7f110ffa185","sha256:93043ac06f759947d75445f4b50a181aa7f31c62412abc8309eb84ba2f336a5c"],"state_sha256":"1d6862dd65accab9626a323241242cb81e02f10fb4bb3583b06eb57729eeeb89"}