{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2015:6TADGUQREDRB5WSN7BPUES6HM2","short_pith_number":"pith:6TADGUQR","canonical_record":{"source":{"id":"1511.03939","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.mtrl-sci","submitted_at":"2015-11-12T16:02:12Z","cross_cats_sorted":[],"title_canon_sha256":"c796f9375307a433ed2e7774cef964ab31015d33ee45c377604fc1d945b864fc","abstract_canon_sha256":"562667b070ef3fd86f83d451f0c22d6977014aad30195aeabb6da93301e5d8f5"},"schema_version":"1.0"},"canonical_sha256":"f4c033521120e21eda4df85f424bc76688357eff1c243db99c0a19872971c6cb","source":{"kind":"arxiv","id":"1511.03939","version":1},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1511.03939","created_at":"2026-05-18T01:19:11Z"},{"alias_kind":"arxiv_version","alias_value":"1511.03939v1","created_at":"2026-05-18T01:19:11Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1511.03939","created_at":"2026-05-18T01:19:11Z"},{"alias_kind":"pith_short_12","alias_value":"6TADGUQREDRB","created_at":"2026-05-18T12:29:07Z"},{"alias_kind":"pith_short_16","alias_value":"6TADGUQREDRB5WSN","created_at":"2026-05-18T12:29:07Z"},{"alias_kind":"pith_short_8","alias_value":"6TADGUQR","created_at":"2026-05-18T12:29:07Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2015:6TADGUQREDRB5WSN7BPUES6HM2","target":"record","payload":{"canonical_record":{"source":{"id":"1511.03939","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.mtrl-sci","submitted_at":"2015-11-12T16:02:12Z","cross_cats_sorted":[],"title_canon_sha256":"c796f9375307a433ed2e7774cef964ab31015d33ee45c377604fc1d945b864fc","abstract_canon_sha256":"562667b070ef3fd86f83d451f0c22d6977014aad30195aeabb6da93301e5d8f5"},"schema_version":"1.0"},"canonical_sha256":"f4c033521120e21eda4df85f424bc76688357eff1c243db99c0a19872971c6cb","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-18T01:19:11.461434Z","signature_b64":"o5uzvzamCySVI3EtfDklL3P4K5UyILkNHGQcHNff96W16OkytneN7L3nOVbdiWfnl1y0+AvxT9sd1551Kd9IBQ==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"f4c033521120e21eda4df85f424bc76688357eff1c243db99c0a19872971c6cb","last_reissued_at":"2026-05-18T01:19:11.460723Z","signature_status":"signed_v1","first_computed_at":"2026-05-18T01:19:11.460723Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"1511.03939","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":"2026-05-18T01:19:11Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"g3ZnxLkXOO1r6B/sFYvnaKBifClIJCQ+OqVKhFpRdJT9QklM3UGHkLD7WsLWpYtO9tPfFLgZpjLmWRwPsk4fAA==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-05-27T02:14:07.725877Z"},"content_sha256":"4886638b3db40fa78ac8681aa383b955de5b2f744c41a651c7c009dba85f392c","schema_version":"1.0","event_id":"sha256:4886638b3db40fa78ac8681aa383b955de5b2f744c41a651c7c009dba85f392c"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2015:6TADGUQREDRB5WSN7BPUES6HM2","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Strain engineering multiferroism in Pnma NaMnF3 fluoroperovskite","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"cond-mat.mtrl-sci","authors_text":"A. C. Garcia-Castro, A. H. Romero, E. Bousquet","submitted_at":"2015-11-12T16:02:12Z","abstract_excerpt":"In this study we show from first principles calculations the possibility to induce multiferroic and magnetoelectric functional properties in the Pnma NaMnF3 fluoroperovskite by means of epitaxial strain engineering. Surprisingly, we found a very strong non-linear polarization-strain coupling that drives an atypical amplification of the ferroelectric polarization for either compression or expansion of the cell. This property is associated with a non-collinear antiferromagnetic ordering, which induces a weak ferromagnetism and thus, making the strained NaMnF3 fluoroperovskite multiferroic. We al"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1511.03939","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":""},"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":"2026-05-18T01:19:11Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"oiAqa9kFxZvs69TJFDhUcdHgVwMkUjHMAZdsJApJC+R0Wgl/2LPpxUiAwpfGb9aeD7/aPiq/ON02e2rJ+Qx8AA==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-05-27T02:14:07.726463Z"},"content_sha256":"7f63ddd38699fc6c1d906b6ab34f5a0a43e009f636107c9a021046fb02b57269","schema_version":"1.0","event_id":"sha256:7f63ddd38699fc6c1d906b6ab34f5a0a43e009f636107c9a021046fb02b57269"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/6TADGUQREDRB5WSN7BPUES6HM2/bundle.json","state_url":"https://pith.science/pith/6TADGUQREDRB5WSN7BPUES6HM2/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/6TADGUQREDRB5WSN7BPUES6HM2/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":"2026-05-27T02:14:07Z","links":{"resolver":"https://pith.science/pith/6TADGUQREDRB5WSN7BPUES6HM2","bundle":"https://pith.science/pith/6TADGUQREDRB5WSN7BPUES6HM2/bundle.json","state":"https://pith.science/pith/6TADGUQREDRB5WSN7BPUES6HM2/state.json","well_known_bundle":"https://pith.science/.well-known/pith/6TADGUQREDRB5WSN7BPUES6HM2/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2015:6TADGUQREDRB5WSN7BPUES6HM2","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":"562667b070ef3fd86f83d451f0c22d6977014aad30195aeabb6da93301e5d8f5","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.mtrl-sci","submitted_at":"2015-11-12T16:02:12Z","title_canon_sha256":"c796f9375307a433ed2e7774cef964ab31015d33ee45c377604fc1d945b864fc"},"schema_version":"1.0","source":{"id":"1511.03939","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1511.03939","created_at":"2026-05-18T01:19:11Z"},{"alias_kind":"arxiv_version","alias_value":"1511.03939v1","created_at":"2026-05-18T01:19:11Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1511.03939","created_at":"2026-05-18T01:19:11Z"},{"alias_kind":"pith_short_12","alias_value":"6TADGUQREDRB","created_at":"2026-05-18T12:29:07Z"},{"alias_kind":"pith_short_16","alias_value":"6TADGUQREDRB5WSN","created_at":"2026-05-18T12:29:07Z"},{"alias_kind":"pith_short_8","alias_value":"6TADGUQR","created_at":"2026-05-18T12:29:07Z"}],"graph_snapshots":[{"event_id":"sha256:7f63ddd38699fc6c1d906b6ab34f5a0a43e009f636107c9a021046fb02b57269","target":"graph","created_at":"2026-05-18T01:19:11Z","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":"In this study we show from first principles calculations the possibility to induce multiferroic and magnetoelectric functional properties in the Pnma NaMnF3 fluoroperovskite by means of epitaxial strain engineering. Surprisingly, we found a very strong non-linear polarization-strain coupling that drives an atypical amplification of the ferroelectric polarization for either compression or expansion of the cell. This property is associated with a non-collinear antiferromagnetic ordering, which induces a weak ferromagnetism and thus, making the strained NaMnF3 fluoroperovskite multiferroic. We al","authors_text":"A. C. Garcia-Castro, A. H. Romero, E. Bousquet","cross_cats":[],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.mtrl-sci","submitted_at":"2015-11-12T16:02:12Z","title":"Strain engineering multiferroism in Pnma NaMnF3 fluoroperovskite"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1511.03939","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":"sha256:4886638b3db40fa78ac8681aa383b955de5b2f744c41a651c7c009dba85f392c","target":"record","created_at":"2026-05-18T01:19:11Z","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":"562667b070ef3fd86f83d451f0c22d6977014aad30195aeabb6da93301e5d8f5","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.mtrl-sci","submitted_at":"2015-11-12T16:02:12Z","title_canon_sha256":"c796f9375307a433ed2e7774cef964ab31015d33ee45c377604fc1d945b864fc"},"schema_version":"1.0","source":{"id":"1511.03939","kind":"arxiv","version":1}},"canonical_sha256":"f4c033521120e21eda4df85f424bc76688357eff1c243db99c0a19872971c6cb","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"f4c033521120e21eda4df85f424bc76688357eff1c243db99c0a19872971c6cb","first_computed_at":"2026-05-18T01:19:11.460723Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T01:19:11.460723Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"o5uzvzamCySVI3EtfDklL3P4K5UyILkNHGQcHNff96W16OkytneN7L3nOVbdiWfnl1y0+AvxT9sd1551Kd9IBQ==","signature_status":"signed_v1","signed_at":"2026-05-18T01:19:11.461434Z","signed_message":"canonical_sha256_bytes"},"source_id":"1511.03939","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:4886638b3db40fa78ac8681aa383b955de5b2f744c41a651c7c009dba85f392c","sha256:7f63ddd38699fc6c1d906b6ab34f5a0a43e009f636107c9a021046fb02b57269"],"state_sha256":"e4216c2233129e0cbb65dec2053f2e7cf4980d081b19a66116712e3eb30d56cc"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"+dOYC7iAbhI/mm3OLnXqRFXc7VShznCIuuPDXl15HHzJCA7+I30ylFZSZYnMoG0I0dTwEfzI1vFibBEczJxvBw==","signed_message":"bundle_sha256_bytes","signed_at":"2026-05-27T02:14:07.729155Z","bundle_sha256":"a691cd4a372465ecc06b9ec73b31515de8216e5c41c26d1ab404609c7358ce90"}}