{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2025:2O2EBKIA6ZDKHQ53QBEOQANTBR","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":"11f20e4eaa4d5808dce448b7236cbdd94455e31f5198a8e11089a6c52faff643","cross_cats_sorted":["physics.app-ph"],"license":"http://creativecommons.org/licenses/by-nc-sa/4.0/","primary_cat":"cond-mat.mtrl-sci","submitted_at":"2025-03-11T18:50:51Z","title_canon_sha256":"07326e138bc201613ffd8635be20c7d3993bb094e4388b118e37ae1557235afe"},"schema_version":"1.0","source":{"id":"2503.08816","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"2503.08816","created_at":"2026-07-05T10:29:41Z"},{"alias_kind":"arxiv_version","alias_value":"2503.08816v1","created_at":"2026-07-05T10:29:41Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.2503.08816","created_at":"2026-07-05T10:29:41Z"},{"alias_kind":"pith_short_12","alias_value":"2O2EBKIA6ZDK","created_at":"2026-07-05T10:29:41Z"},{"alias_kind":"pith_short_16","alias_value":"2O2EBKIA6ZDKHQ53","created_at":"2026-07-05T10:29:41Z"},{"alias_kind":"pith_short_8","alias_value":"2O2EBKIA","created_at":"2026-07-05T10:29:41Z"}],"graph_snapshots":[{"event_id":"sha256:c33b57aafa6d82cfd56195e4df8dc86525bfb1a39ae5a7c7fc17dc764da29172","target":"graph","created_at":"2026-07-05T10:29:41Z","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/2503.08816/integrity.json","findings":[],"snapshot_sha256":"c28c3603d3b5d939e8dc4c7e95fa8dfce3d595e45f758748cecf8e644a296938","summary":{"advisory":0,"by_detector":{},"critical":0,"informational":0}},"paper":{"abstract_excerpt":"Thin films of aluminum hafnium nitride (Al$_{1-x}$Hf$_{x}$N) were synthesized via reactive magnetron sputtering for Hf contents up to $x$ = 0.13. X-ray diffraction showed a single $c$-axis oriented wurtzite phase for all films. Hard X-ray photoelectron spectroscopy demonstrated homogeneous Al:Hf distribution through the thin films and confirmed their insulating character. A collection of complementary tests showed unambiguous polarization inversion, and thus ferroelectricity in multiple samples. Current density vs. electric field hysteresis measurements showed distinct ferroelectric switching ","authors_text":"Brendan Hanrahan, Cheng-Wei Lee, Daniel Drury, Geoff L. Brennecka, Glen R. Fox, Keisuke Yazawa, Lutz Baumgarten, Martina M\\\"uller, Nate S.P. Bernstein, Oliver Rehm, Prashun Gorai, Tatau Shimada, Yoshiki Iwazaki, Yuki Sakai","cross_cats":["physics.app-ph"],"headline":"","license":"http://creativecommons.org/licenses/by-nc-sa/4.0/","primary_cat":"cond-mat.mtrl-sci","submitted_at":"2025-03-11T18:50:51Z","title":"Ferroelectricity of Wurtzite Al$_{1-x}$Hf$_{x}$N Heterovalent Alloys"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2503.08816","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":"sha256:08519e919c7fd7048e638d5bfd038604cf82bbb2b63d54b955ddba9c6e0f7c3f","target":"record","created_at":"2026-07-05T10:29:41Z","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":"11f20e4eaa4d5808dce448b7236cbdd94455e31f5198a8e11089a6c52faff643","cross_cats_sorted":["physics.app-ph"],"license":"http://creativecommons.org/licenses/by-nc-sa/4.0/","primary_cat":"cond-mat.mtrl-sci","submitted_at":"2025-03-11T18:50:51Z","title_canon_sha256":"07326e138bc201613ffd8635be20c7d3993bb094e4388b118e37ae1557235afe"},"schema_version":"1.0","source":{"id":"2503.08816","kind":"arxiv","version":1}},"canonical_sha256":"d3b440a900f646a3c3bb8048e801b30c7e4df2f20005d61600f03f36c737dfe8","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"d3b440a900f646a3c3bb8048e801b30c7e4df2f20005d61600f03f36c737dfe8","first_computed_at":"2026-07-05T10:29:41.763706Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-07-05T10:29:41.763706Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"Yuck/e7WfekLvjA6TEBpCRIA8G0IZWVhjfe1nogFVXhDecy7ma2B8ZPbO+CuS0ubc2csYmlUHUHFy0B537HyDA==","signature_status":"signed_v1","signed_at":"2026-07-05T10:29:41.764473Z","signed_message":"canonical_sha256_bytes"},"source_id":"2503.08816","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:08519e919c7fd7048e638d5bfd038604cf82bbb2b63d54b955ddba9c6e0f7c3f","sha256:c33b57aafa6d82cfd56195e4df8dc86525bfb1a39ae5a7c7fc17dc764da29172"],"state_sha256":"c672c763572a9559f7125c3e5de8918b519522e207cc9af27425ccf9dc038e3c"}