{"record_type":"pith_number_record","schema_url":"https://pith.science/schemas/pith-number/v1.json","pith_number":"pith:2023:7SSVY7AKWJ77NTFFYMEB6CPESB","short_pith_number":"pith:7SSVY7AK","schema_version":"1.0","canonical_sha256":"fca55c7c0ab27ff6cca5c3081f09e490746ef9980d378f8b74f9178fc90c411f","source":{"kind":"arxiv","id":"2301.12773","version":4},"attestation_state":"computed","paper":{"title":"Designing magnetocaloric materials for hydrogen liquefaction with light rare-earth Laves phases","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"cond-mat.mtrl-sci","authors_text":"Alex Aubert, Eduard Bykov, Franziska Scheibel, Hongbin Zhang, Konstantin Skokov, Nuno Fortunato, Oliver Gutfleisch, Tino Gottschall, Wei Liu","submitted_at":"2023-01-30T10:36:09Z","abstract_excerpt":"Magnetocaloric hydrogen liquefaction could be a \"game-changer\" for liquid hydrogen industry. Although heavy rare-earth-based magnetocaloric materials show strong magnetocaloric effects in the temperature range required by hydrogen liquefaction (77 ~ 20 K), the high resource criticality of the heavy rare-earth elements is a major obstacle for upscaling this emerging liquefaction technology. In contrast, the higher abundances of the light rare-earth elements make their alloys highly appealing for magnetocaloric hydrogen liquefaction. Via a mean-field approach, it is demonstrated that tuning the "},"verification_status":{"content_addressed":true,"pith_receipt":true,"author_attested":false,"weak_author_claims":0,"strong_author_claims":0,"externally_anchored":false,"storage_verified":false,"citation_signatures":0,"replication_records":0,"graph_snapshot":true,"references_resolved":false,"formal_links_present":false},"canonical_record":{"source":{"id":"2301.12773","kind":"arxiv","version":4},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.mtrl-sci","submitted_at":"2023-01-30T10:36:09Z","cross_cats_sorted":[],"title_canon_sha256":"952532ace7f61a2d867a38c27710a3a643d82ca93c44cd93918be5d356bdb83f","abstract_canon_sha256":"e765ed3f4766b32244bc48b859c625a2b681b3558055dbd5c1173bad72dd83a6"},"schema_version":"1.0"},"receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-07-05T06:02:32.172338Z","signature_b64":"WBkb+gdHKo567saV2hmY+u2c6obhX78XwB5rzfbJEL9kZyuyj/pqbULMmt1ATuhY72yi1L72Q2CbCLejnnsHDA==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"fca55c7c0ab27ff6cca5c3081f09e490746ef9980d378f8b74f9178fc90c411f","last_reissued_at":"2026-07-05T06:02:32.171649Z","signature_status":"signed_v1","first_computed_at":"2026-07-05T06:02:32.171649Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"graph_snapshot":{"paper":{"title":"Designing magnetocaloric materials for hydrogen liquefaction with light rare-earth Laves phases","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"cond-mat.mtrl-sci","authors_text":"Alex Aubert, Eduard Bykov, Franziska Scheibel, Hongbin Zhang, Konstantin Skokov, Nuno Fortunato, Oliver Gutfleisch, Tino Gottschall, Wei Liu","submitted_at":"2023-01-30T10:36:09Z","abstract_excerpt":"Magnetocaloric hydrogen liquefaction could be a \"game-changer\" for liquid hydrogen industry. Although heavy rare-earth-based magnetocaloric materials show strong magnetocaloric effects in the temperature range required by hydrogen liquefaction (77 ~ 20 K), the high resource criticality of the heavy rare-earth elements is a major obstacle for upscaling this emerging liquefaction technology. In contrast, the higher abundances of the light rare-earth elements make their alloys highly appealing for magnetocaloric hydrogen liquefaction. Via a mean-field approach, it is demonstrated that tuning the "},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2301.12773","kind":"arxiv","version":4},"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/2301.12773/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"},"aliases":[{"alias_kind":"arxiv","alias_value":"2301.12773","created_at":"2026-07-05T06:02:32.171730+00:00"},{"alias_kind":"arxiv_version","alias_value":"2301.12773v4","created_at":"2026-07-05T06:02:32.171730+00:00"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.2301.12773","created_at":"2026-07-05T06:02:32.171730+00:00"},{"alias_kind":"pith_short_12","alias_value":"7SSVY7AKWJ77","created_at":"2026-07-05T06:02:32.171730+00:00"},{"alias_kind":"pith_short_16","alias_value":"7SSVY7AKWJ77NTFF","created_at":"2026-07-05T06:02:32.171730+00:00"},{"alias_kind":"pith_short_8","alias_value":"7SSVY7AK","created_at":"2026-07-05T06:02:32.171730+00:00"}],"events":[],"event_summary":{},"paper_claims":[],"inbound_citations":{"count":0,"internal_anchor_count":0,"sample":[]},"formal_canon":{"evidence_count":0,"sample":[],"anchors":[]},"links":{"html":"https://pith.science/pith/7SSVY7AKWJ77NTFFYMEB6CPESB","json":"https://pith.science/pith/7SSVY7AKWJ77NTFFYMEB6CPESB.json","graph_json":"https://pith.science/api/pith-number/7SSVY7AKWJ77NTFFYMEB6CPESB/graph.json","events_json":"https://pith.science/api/pith-number/7SSVY7AKWJ77NTFFYMEB6CPESB/events.json","paper":"https://pith.science/paper/7SSVY7AK"},"agent_actions":{"view_html":"https://pith.science/pith/7SSVY7AKWJ77NTFFYMEB6CPESB","download_json":"https://pith.science/pith/7SSVY7AKWJ77NTFFYMEB6CPESB.json","view_paper":"https://pith.science/paper/7SSVY7AK","resolve_alias":"https://pith.science/api/pith-number/resolve?arxiv=2301.12773&json=true","fetch_graph":"https://pith.science/api/pith-number/7SSVY7AKWJ77NTFFYMEB6CPESB/graph.json","fetch_events":"https://pith.science/api/pith-number/7SSVY7AKWJ77NTFFYMEB6CPESB/events.json","actions":{"anchor_timestamp":"https://pith.science/pith/7SSVY7AKWJ77NTFFYMEB6CPESB/action/timestamp_anchor","attest_storage":"https://pith.science/pith/7SSVY7AKWJ77NTFFYMEB6CPESB/action/storage_attestation","attest_author":"https://pith.science/pith/7SSVY7AKWJ77NTFFYMEB6CPESB/action/author_attestation","sign_citation":"https://pith.science/pith/7SSVY7AKWJ77NTFFYMEB6CPESB/action/citation_signature","submit_replication":"https://pith.science/pith/7SSVY7AKWJ77NTFFYMEB6CPESB/action/replication_record"}},"created_at":"2026-07-05T06:02:32.171730+00:00","updated_at":"2026-07-05T06:02:32.171730+00:00"}