{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2014:NRS2TGRA6IPPQKPKFFA7KJ3LP6","short_pith_number":"pith:NRS2TGRA","canonical_record":{"source":{"id":"1402.7209","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.mtrl-sci","submitted_at":"2014-02-28T11:43:32Z","cross_cats_sorted":[],"title_canon_sha256":"e9393a8ad867bd3d81533728624909e682814f4e0cac99cb73028ae91014b560","abstract_canon_sha256":"1757b346bba3c1281b70ba7ab8c23202111b2ec942fe02b2da9d864f241c5720"},"schema_version":"1.0"},"canonical_sha256":"6c65a99a20f21ef829ea2941f5276b7f929cdca2787478ae30b84bd98865a210","source":{"kind":"arxiv","id":"1402.7209","version":1},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1402.7209","created_at":"2026-05-18T02:34:52Z"},{"alias_kind":"arxiv_version","alias_value":"1402.7209v1","created_at":"2026-05-18T02:34:52Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1402.7209","created_at":"2026-05-18T02:34:52Z"},{"alias_kind":"pith_short_12","alias_value":"NRS2TGRA6IPP","created_at":"2026-05-18T12:28:41Z"},{"alias_kind":"pith_short_16","alias_value":"NRS2TGRA6IPPQKPK","created_at":"2026-05-18T12:28:41Z"},{"alias_kind":"pith_short_8","alias_value":"NRS2TGRA","created_at":"2026-05-18T12:28:41Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2014:NRS2TGRA6IPPQKPKFFA7KJ3LP6","target":"record","payload":{"canonical_record":{"source":{"id":"1402.7209","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.mtrl-sci","submitted_at":"2014-02-28T11:43:32Z","cross_cats_sorted":[],"title_canon_sha256":"e9393a8ad867bd3d81533728624909e682814f4e0cac99cb73028ae91014b560","abstract_canon_sha256":"1757b346bba3c1281b70ba7ab8c23202111b2ec942fe02b2da9d864f241c5720"},"schema_version":"1.0"},"canonical_sha256":"6c65a99a20f21ef829ea2941f5276b7f929cdca2787478ae30b84bd98865a210","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-18T02:34:52.469143Z","signature_b64":"y/wZwcP1MoAVXzqGFzSSZkUkdtNthQsgpa0L0kvX2GQbYPAxtk92VKgHGSKAsPdEfG0qkz6diblWo5tRTeyQCg==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"6c65a99a20f21ef829ea2941f5276b7f929cdca2787478ae30b84bd98865a210","last_reissued_at":"2026-05-18T02:34:52.468777Z","signature_status":"signed_v1","first_computed_at":"2026-05-18T02:34:52.468777Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"1402.7209","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":"2026-05-18T02:34:52Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"taaLHhUo9O9OMFgpMEsRGOToEAfHP8MODlwGloCbrPBjOs/bA3Jsl42coRXQbBr3BWnY8iYtuvt/SkoJFpiYDA==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-05-30T06:10:29.315595Z"},"content_sha256":"99c8f7e1e75e699d63df834fc5bbe90e49651a172e7a09fc98149b619de2d44f","schema_version":"1.0","event_id":"sha256:99c8f7e1e75e699d63df834fc5bbe90e49651a172e7a09fc98149b619de2d44f"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2014:NRS2TGRA6IPPQKPKFFA7KJ3LP6","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Annealing-induced enhancement of ferromagnetism and nano-particle formation in ferromagnetic-semiconductor GeFe","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"cond-mat.mtrl-sci","authors_text":"Masaaki Tanaka, Shinobu Ohya, Yoshisuke Ban, Yuki Wakabayashi","submitted_at":"2014-02-28T11:43:32Z","abstract_excerpt":"We report the annealing-induced enhancement of ferromagnetism and nano-particle formation in group-IV-based ferromagnetic-semiconductor GeFe. We successfully increase the Curie temperature of the Ge0.895Fe0.105 film up to ~220 K while keeping a single ferromagnetic phase when the annealing temperature is lower than 500{\\deg}C. In contrast, when annealed at 600{\\deg}C, single-crystal GeFe nano-particles with stacking faults and twins, which have a high Curie temperature nearly up to room temperature, are formed in the film. Our results show that annealing is quite effective to improve the magne"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1402.7209","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":"2026-05-18T02:34:52Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"yf4i4AAPUW8YU0U4HswdciaQfX5/e9y12J0HQ9+TIRuVhpyunzDnPFYpaM/LYUKGdLRCQ+LDhGBoKpdemCkNCw==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-05-30T06:10:29.316236Z"},"content_sha256":"1949bd1fd43ba2d676e3c9d2453d42458602d790e42e9921bc0f1fe07ab5e7b1","schema_version":"1.0","event_id":"sha256:1949bd1fd43ba2d676e3c9d2453d42458602d790e42e9921bc0f1fe07ab5e7b1"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/NRS2TGRA6IPPQKPKFFA7KJ3LP6/bundle.json","state_url":"https://pith.science/pith/NRS2TGRA6IPPQKPKFFA7KJ3LP6/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/NRS2TGRA6IPPQKPKFFA7KJ3LP6/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":"2026-05-30T06:10:29Z","links":{"resolver":"https://pith.science/pith/NRS2TGRA6IPPQKPKFFA7KJ3LP6","bundle":"https://pith.science/pith/NRS2TGRA6IPPQKPKFFA7KJ3LP6/bundle.json","state":"https://pith.science/pith/NRS2TGRA6IPPQKPKFFA7KJ3LP6/state.json","well_known_bundle":"https://pith.science/.well-known/pith/NRS2TGRA6IPPQKPKFFA7KJ3LP6/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2014:NRS2TGRA6IPPQKPKFFA7KJ3LP6","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":"1757b346bba3c1281b70ba7ab8c23202111b2ec942fe02b2da9d864f241c5720","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.mtrl-sci","submitted_at":"2014-02-28T11:43:32Z","title_canon_sha256":"e9393a8ad867bd3d81533728624909e682814f4e0cac99cb73028ae91014b560"},"schema_version":"1.0","source":{"id":"1402.7209","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1402.7209","created_at":"2026-05-18T02:34:52Z"},{"alias_kind":"arxiv_version","alias_value":"1402.7209v1","created_at":"2026-05-18T02:34:52Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1402.7209","created_at":"2026-05-18T02:34:52Z"},{"alias_kind":"pith_short_12","alias_value":"NRS2TGRA6IPP","created_at":"2026-05-18T12:28:41Z"},{"alias_kind":"pith_short_16","alias_value":"NRS2TGRA6IPPQKPK","created_at":"2026-05-18T12:28:41Z"},{"alias_kind":"pith_short_8","alias_value":"NRS2TGRA","created_at":"2026-05-18T12:28:41Z"}],"graph_snapshots":[{"event_id":"sha256:1949bd1fd43ba2d676e3c9d2453d42458602d790e42e9921bc0f1fe07ab5e7b1","target":"graph","created_at":"2026-05-18T02:34:52Z","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 report the annealing-induced enhancement of ferromagnetism and nano-particle formation in group-IV-based ferromagnetic-semiconductor GeFe. We successfully increase the Curie temperature of the Ge0.895Fe0.105 film up to ~220 K while keeping a single ferromagnetic phase when the annealing temperature is lower than 500{\\deg}C. In contrast, when annealed at 600{\\deg}C, single-crystal GeFe nano-particles with stacking faults and twins, which have a high Curie temperature nearly up to room temperature, are formed in the film. Our results show that annealing is quite effective to improve the magne","authors_text":"Masaaki Tanaka, Shinobu Ohya, Yoshisuke Ban, Yuki Wakabayashi","cross_cats":[],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.mtrl-sci","submitted_at":"2014-02-28T11:43:32Z","title":"Annealing-induced enhancement of ferromagnetism and nano-particle formation in ferromagnetic-semiconductor GeFe"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1402.7209","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":"sha256:99c8f7e1e75e699d63df834fc5bbe90e49651a172e7a09fc98149b619de2d44f","target":"record","created_at":"2026-05-18T02:34:52Z","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":"1757b346bba3c1281b70ba7ab8c23202111b2ec942fe02b2da9d864f241c5720","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.mtrl-sci","submitted_at":"2014-02-28T11:43:32Z","title_canon_sha256":"e9393a8ad867bd3d81533728624909e682814f4e0cac99cb73028ae91014b560"},"schema_version":"1.0","source":{"id":"1402.7209","kind":"arxiv","version":1}},"canonical_sha256":"6c65a99a20f21ef829ea2941f5276b7f929cdca2787478ae30b84bd98865a210","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"6c65a99a20f21ef829ea2941f5276b7f929cdca2787478ae30b84bd98865a210","first_computed_at":"2026-05-18T02:34:52.468777Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T02:34:52.468777Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"y/wZwcP1MoAVXzqGFzSSZkUkdtNthQsgpa0L0kvX2GQbYPAxtk92VKgHGSKAsPdEfG0qkz6diblWo5tRTeyQCg==","signature_status":"signed_v1","signed_at":"2026-05-18T02:34:52.469143Z","signed_message":"canonical_sha256_bytes"},"source_id":"1402.7209","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:99c8f7e1e75e699d63df834fc5bbe90e49651a172e7a09fc98149b619de2d44f","sha256:1949bd1fd43ba2d676e3c9d2453d42458602d790e42e9921bc0f1fe07ab5e7b1"],"state_sha256":"89dc6bfe9b26d08918e8a7fcc250dd511857bd6c0c6e5471b213243b817d51af"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"yGGsmOSOv4rCKPl+aXzj4jrt1lBeT1vL5pXX7hrwrFmZuPDsKG/D0EM2VLEYzw1KT6RyYrFGdVqLbCrSoPgNDA==","signed_message":"bundle_sha256_bytes","signed_at":"2026-05-30T06:10:29.320193Z","bundle_sha256":"57dc0c449414ca777eb0765b20c55268772e114e169ba32a1846cbf6ee39df2e"}}