{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2006:LHCQIMCVZY4L5KJALZZ4Q53UPK","short_pith_number":"pith:LHCQIMCV","canonical_record":{"source":{"id":"cond-mat/0602234","kind":"arxiv","version":1},"metadata":{"license":"","primary_cat":"cond-mat.supr-con","submitted_at":"2006-02-09T11:57:16Z","cross_cats_sorted":["cond-mat.mtrl-sci"],"title_canon_sha256":"ff97c055e055c666161190303c2cc6943cebc231155f0aed435b765709e43250","abstract_canon_sha256":"f9789e509c7575bb964effb2083303f6e45646c7d6273151e9633a4f6705a558"},"schema_version":"1.0"},"canonical_sha256":"59c5043055ce38bea9205e73c877747a99ef77da391ad6fa48ce23a53aeca837","source":{"kind":"arxiv","id":"cond-mat/0602234","version":1},"source_aliases":[{"alias_kind":"arxiv","alias_value":"cond-mat/0602234","created_at":"2026-07-04T17:00:05Z"},{"alias_kind":"arxiv_version","alias_value":"cond-mat/0602234v1","created_at":"2026-07-04T17:00:05Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.cond-mat/0602234","created_at":"2026-07-04T17:00:05Z"},{"alias_kind":"pith_short_12","alias_value":"LHCQIMCVZY4L","created_at":"2026-07-04T17:00:05Z"},{"alias_kind":"pith_short_16","alias_value":"LHCQIMCVZY4L5KJA","created_at":"2026-07-04T17:00:05Z"},{"alias_kind":"pith_short_8","alias_value":"LHCQIMCV","created_at":"2026-07-04T17:00:05Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2006:LHCQIMCVZY4L5KJALZZ4Q53UPK","target":"record","payload":{"canonical_record":{"source":{"id":"cond-mat/0602234","kind":"arxiv","version":1},"metadata":{"license":"","primary_cat":"cond-mat.supr-con","submitted_at":"2006-02-09T11:57:16Z","cross_cats_sorted":["cond-mat.mtrl-sci"],"title_canon_sha256":"ff97c055e055c666161190303c2cc6943cebc231155f0aed435b765709e43250","abstract_canon_sha256":"f9789e509c7575bb964effb2083303f6e45646c7d6273151e9633a4f6705a558"},"schema_version":"1.0"},"canonical_sha256":"59c5043055ce38bea9205e73c877747a99ef77da391ad6fa48ce23a53aeca837","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-07-04T17:00:05.168490Z","signature_b64":"1W5DvbJ9koEwBpRIE92tbrdLZr6yRPAApCq6qQbMZ86hJAWzVp1sZ6uXCcdnZaT4hfvYz8j9i7msr2dJzK5vDA==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"59c5043055ce38bea9205e73c877747a99ef77da391ad6fa48ce23a53aeca837","last_reissued_at":"2026-07-04T17:00:05.168148Z","signature_status":"signed_v1","first_computed_at":"2026-07-04T17:00:05.168148Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"cond-mat/0602234","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":"2026-07-04T17:00:05Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"KuKMJaaudkx8osBHGL5T+EbrTfLkStDC43uiV+nudOkgs7NzQGJS6DPG5yYrnzNDF2SLvEW+8AozNEPtP9sVAA==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-07-05T09:26:38.414699Z"},"content_sha256":"fe9afe5f8fadc0f0a3c7a4a726762f36d002d15de1bc784d2b412085c7307818","schema_version":"1.0","event_id":"sha256:fe9afe5f8fadc0f0a3c7a4a726762f36d002d15de1bc784d2b412085c7307818"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2006:LHCQIMCVZY4L5KJALZZ4Q53UPK","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Strong Pinning Enhancement in MgB2 Using Very Small Dy2O3 Additions","license":"","headline":"","cross_cats":["cond-mat.mtrl-sci"],"primary_cat":"cond-mat.supr-con","authors_text":"J. L. MacManus-Driscoll, M. Wei, S. K. Chen","submitted_at":"2006-02-09T11:57:16Z","abstract_excerpt":"0.5 to 5.0 wt.% Dy2O3 was in-situ reacted with Mg + B to form pinned MgB2. While Tc remained largely unchanged, Jc was strongly enhanced. The best sample (only 0.5 wt.% Dy2O3) had a Jc of 6.5 x 10^5 A/cm^2 at 6K, 1T and 3.5 x 10^5 A/cm^2 at 20K, 1T, around a factor of 4 higher compared to the pure sample, and equivalent to hot-pressed or nano-Si added MgB2 at below 1T. Even distributions of nano-scale precipitates of DyB4 and MgO were observed within the grains. The room temperature resistivity decreased with Dy2O3 indicative of improved grain connectivity."},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"cond-mat/0602234","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":""},"integrity":{"clean":true,"summary":{"advisory":0,"critical":0,"by_detector":{},"informational":0},"endpoint":"/pith/cond-mat/0602234/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":"2026-07-04T17:00:05Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"RoNxIZdademvDe+neTyJYAEo26JJe/RfNld1tsR4a5RR/FRuj0sO3e+tr21bBC5Ims+lEYTOG/4ITzS0SmAyCg==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-07-05T09:26:38.415071Z"},"content_sha256":"b003e80495263909e0bb0310bcc959b1a805ea8b7a32ca517a2fd53447942f74","schema_version":"1.0","event_id":"sha256:b003e80495263909e0bb0310bcc959b1a805ea8b7a32ca517a2fd53447942f74"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/LHCQIMCVZY4L5KJALZZ4Q53UPK/bundle.json","state_url":"https://pith.science/pith/LHCQIMCVZY4L5KJALZZ4Q53UPK/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/LHCQIMCVZY4L5KJALZZ4Q53UPK/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":"2026-07-05T09:26:38Z","links":{"resolver":"https://pith.science/pith/LHCQIMCVZY4L5KJALZZ4Q53UPK","bundle":"https://pith.science/pith/LHCQIMCVZY4L5KJALZZ4Q53UPK/bundle.json","state":"https://pith.science/pith/LHCQIMCVZY4L5KJALZZ4Q53UPK/state.json","well_known_bundle":"https://pith.science/.well-known/pith/LHCQIMCVZY4L5KJALZZ4Q53UPK/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2006:LHCQIMCVZY4L5KJALZZ4Q53UPK","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":"f9789e509c7575bb964effb2083303f6e45646c7d6273151e9633a4f6705a558","cross_cats_sorted":["cond-mat.mtrl-sci"],"license":"","primary_cat":"cond-mat.supr-con","submitted_at":"2006-02-09T11:57:16Z","title_canon_sha256":"ff97c055e055c666161190303c2cc6943cebc231155f0aed435b765709e43250"},"schema_version":"1.0","source":{"id":"cond-mat/0602234","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"cond-mat/0602234","created_at":"2026-07-04T17:00:05Z"},{"alias_kind":"arxiv_version","alias_value":"cond-mat/0602234v1","created_at":"2026-07-04T17:00:05Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.cond-mat/0602234","created_at":"2026-07-04T17:00:05Z"},{"alias_kind":"pith_short_12","alias_value":"LHCQIMCVZY4L","created_at":"2026-07-04T17:00:05Z"},{"alias_kind":"pith_short_16","alias_value":"LHCQIMCVZY4L5KJA","created_at":"2026-07-04T17:00:05Z"},{"alias_kind":"pith_short_8","alias_value":"LHCQIMCV","created_at":"2026-07-04T17:00:05Z"}],"graph_snapshots":[{"event_id":"sha256:b003e80495263909e0bb0310bcc959b1a805ea8b7a32ca517a2fd53447942f74","target":"graph","created_at":"2026-07-04T17:00:05Z","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/cond-mat/0602234/integrity.json","findings":[],"snapshot_sha256":"c28c3603d3b5d939e8dc4c7e95fa8dfce3d595e45f758748cecf8e644a296938","summary":{"advisory":0,"by_detector":{},"critical":0,"informational":0}},"paper":{"abstract_excerpt":"0.5 to 5.0 wt.% Dy2O3 was in-situ reacted with Mg + B to form pinned MgB2. While Tc remained largely unchanged, Jc was strongly enhanced. The best sample (only 0.5 wt.% Dy2O3) had a Jc of 6.5 x 10^5 A/cm^2 at 6K, 1T and 3.5 x 10^5 A/cm^2 at 20K, 1T, around a factor of 4 higher compared to the pure sample, and equivalent to hot-pressed or nano-Si added MgB2 at below 1T. Even distributions of nano-scale precipitates of DyB4 and MgO were observed within the grains. The room temperature resistivity decreased with Dy2O3 indicative of improved grain connectivity.","authors_text":"J. L. MacManus-Driscoll, M. Wei, S. K. Chen","cross_cats":["cond-mat.mtrl-sci"],"headline":"","license":"","primary_cat":"cond-mat.supr-con","submitted_at":"2006-02-09T11:57:16Z","title":"Strong Pinning Enhancement in MgB2 Using Very Small Dy2O3 Additions"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"cond-mat/0602234","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:fe9afe5f8fadc0f0a3c7a4a726762f36d002d15de1bc784d2b412085c7307818","target":"record","created_at":"2026-07-04T17:00:05Z","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":"f9789e509c7575bb964effb2083303f6e45646c7d6273151e9633a4f6705a558","cross_cats_sorted":["cond-mat.mtrl-sci"],"license":"","primary_cat":"cond-mat.supr-con","submitted_at":"2006-02-09T11:57:16Z","title_canon_sha256":"ff97c055e055c666161190303c2cc6943cebc231155f0aed435b765709e43250"},"schema_version":"1.0","source":{"id":"cond-mat/0602234","kind":"arxiv","version":1}},"canonical_sha256":"59c5043055ce38bea9205e73c877747a99ef77da391ad6fa48ce23a53aeca837","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"59c5043055ce38bea9205e73c877747a99ef77da391ad6fa48ce23a53aeca837","first_computed_at":"2026-07-04T17:00:05.168148Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-07-04T17:00:05.168148Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"1W5DvbJ9koEwBpRIE92tbrdLZr6yRPAApCq6qQbMZ86hJAWzVp1sZ6uXCcdnZaT4hfvYz8j9i7msr2dJzK5vDA==","signature_status":"signed_v1","signed_at":"2026-07-04T17:00:05.168490Z","signed_message":"canonical_sha256_bytes"},"source_id":"cond-mat/0602234","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:fe9afe5f8fadc0f0a3c7a4a726762f36d002d15de1bc784d2b412085c7307818","sha256:b003e80495263909e0bb0310bcc959b1a805ea8b7a32ca517a2fd53447942f74"],"state_sha256":"07804f4863c1a2f9dbcd549709b34211f43ee7ac878f579186771b9ed8cea04a"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"wtXL5/4nBb9qPC82OebKHBDc0evkcM7+f0RFogulQhkpNDBDIembnjTkhAg0SeQeSwnd9EJcfUAA4lRARAHcCw==","signed_message":"bundle_sha256_bytes","signed_at":"2026-07-05T09:26:38.417154Z","bundle_sha256":"f4d864e8886c9cff800c7c3cc7a72035b09d30b89c221e498d29984006cf9533"}}