{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2009:SR7GC2TI7BTV3AJ57TEOUV5RGK","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":"ce0f185cc3e41af6f5ab8637318ea777869ac3b5a623322cf4aceee5fa07fb95","cross_cats_sorted":["cond-mat.mtrl-sci"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.str-el","submitted_at":"2009-04-11T16:49:07Z","title_canon_sha256":"561cadbd2410f8d88960ae1693239b6acea34f97aa9442e51fa6a9cf01db580a"},"schema_version":"1.0","source":{"id":"0904.1813","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"0904.1813","created_at":"2026-05-18T02:14:06Z"},{"alias_kind":"arxiv_version","alias_value":"0904.1813v1","created_at":"2026-05-18T02:14:06Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.0904.1813","created_at":"2026-05-18T02:14:06Z"},{"alias_kind":"pith_short_12","alias_value":"SR7GC2TI7BTV","created_at":"2026-05-18T12:26:01Z"},{"alias_kind":"pith_short_16","alias_value":"SR7GC2TI7BTV3AJ5","created_at":"2026-05-18T12:26:01Z"},{"alias_kind":"pith_short_8","alias_value":"SR7GC2TI","created_at":"2026-05-18T12:26:01Z"}],"graph_snapshots":[{"event_id":"sha256:36dc6ca78716912cd1428039ce0dd5404bd73bf6f6057dae41d62a4c4a339729","target":"graph","created_at":"2026-05-18T02:14:06Z","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 that the major features in the temperature dependence of dc and ac magnetization of a well-known spin-chain compound, Ca3Co2O6, which has been known to exhibit two complex magnetic transitions due to geometrical frustration (one near 24 K and the other near 10 K), are found to be qualitatively unaffected in its nano form synthesized by high-energy ball-milling. However, the multiple steps in isothermal magnetization - a topic of current interest in low-dimensional systems - known for the bulk form well below 10 K is absent in the nano particles. We believe that this finding will be u","authors_text":"B.A. Chalke, E.V. Sampathkumaran, Kartik K Iyer, Niharika Mohapatra, S.C. Purandare, Sitikantha D Das","cross_cats":["cond-mat.mtrl-sci"],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.str-el","submitted_at":"2009-04-11T16:49:07Z","title":"Magnetic behavior of nano crystals of a spin-chain system, Ca3Co2O6: Absence of multiple steps in the low temperature isothermal magnetization"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"0904.1813","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:f38ffbefe201f1d0aa1731b4e7e33a8d29f94c604eb968f7ab80bad345d03613","target":"record","created_at":"2026-05-18T02:14:06Z","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":"ce0f185cc3e41af6f5ab8637318ea777869ac3b5a623322cf4aceee5fa07fb95","cross_cats_sorted":["cond-mat.mtrl-sci"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.str-el","submitted_at":"2009-04-11T16:49:07Z","title_canon_sha256":"561cadbd2410f8d88960ae1693239b6acea34f97aa9442e51fa6a9cf01db580a"},"schema_version":"1.0","source":{"id":"0904.1813","kind":"arxiv","version":1}},"canonical_sha256":"947e616a68f8675d813dfcc8ea57b1329bca829025fc3fee870e34313d86a478","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"947e616a68f8675d813dfcc8ea57b1329bca829025fc3fee870e34313d86a478","first_computed_at":"2026-05-18T02:14:06.405115Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T02:14:06.405115Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"CwaQgBYG/d2KktARnE4MyoIhjJO7221aX1jdgoCzYXT2iwBtCB/2+sCwdU6b/UvznMAeqvOGPyo+3mXrT03nAg==","signature_status":"signed_v1","signed_at":"2026-05-18T02:14:06.405630Z","signed_message":"canonical_sha256_bytes"},"source_id":"0904.1813","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:f38ffbefe201f1d0aa1731b4e7e33a8d29f94c604eb968f7ab80bad345d03613","sha256:36dc6ca78716912cd1428039ce0dd5404bd73bf6f6057dae41d62a4c4a339729"],"state_sha256":"a3a47c0c7a3e368b7d0365c17ea426748fe713da1d676d3e531b694b6552ae6d"}