{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2010:7N7MZT65NV6UZ7QV6UQBGDOM23","short_pith_number":"pith:7N7MZT65","canonical_record":{"source":{"id":"1004.5001","kind":"arxiv","version":2},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.mtrl-sci","submitted_at":"2010-04-28T11:26:18Z","cross_cats_sorted":[],"title_canon_sha256":"538df2f899524ab5be07b1b16c000a1197d3219fe8257ce11f4598f1c870cf17","abstract_canon_sha256":"c776883089fad438459debcc84c42e6ed9fafd51ae82ff75da3665db2fa0e586"},"schema_version":"1.0"},"canonical_sha256":"fb7ecccfdd6d7d4cfe15f520130dccd6ffc18ecb7c99092f64faad4c5fa2ea74","source":{"kind":"arxiv","id":"1004.5001","version":2},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1004.5001","created_at":"2026-05-18T04:31:11Z"},{"alias_kind":"arxiv_version","alias_value":"1004.5001v2","created_at":"2026-05-18T04:31:11Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1004.5001","created_at":"2026-05-18T04:31:11Z"},{"alias_kind":"pith_short_12","alias_value":"7N7MZT65NV6U","created_at":"2026-05-18T12:26:05Z"},{"alias_kind":"pith_short_16","alias_value":"7N7MZT65NV6UZ7QV","created_at":"2026-05-18T12:26:05Z"},{"alias_kind":"pith_short_8","alias_value":"7N7MZT65","created_at":"2026-05-18T12:26:05Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2010:7N7MZT65NV6UZ7QV6UQBGDOM23","target":"record","payload":{"canonical_record":{"source":{"id":"1004.5001","kind":"arxiv","version":2},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.mtrl-sci","submitted_at":"2010-04-28T11:26:18Z","cross_cats_sorted":[],"title_canon_sha256":"538df2f899524ab5be07b1b16c000a1197d3219fe8257ce11f4598f1c870cf17","abstract_canon_sha256":"c776883089fad438459debcc84c42e6ed9fafd51ae82ff75da3665db2fa0e586"},"schema_version":"1.0"},"canonical_sha256":"fb7ecccfdd6d7d4cfe15f520130dccd6ffc18ecb7c99092f64faad4c5fa2ea74","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-18T04:31:11.794696Z","signature_b64":"b8sjGswMmJEl5W0JCzYXeDXHFON6xOW6bNZPw/zndMMo2QqydpNIRizjUmqKtaXSd9hDKGFhlTA2rVSzYub4AA==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"fb7ecccfdd6d7d4cfe15f520130dccd6ffc18ecb7c99092f64faad4c5fa2ea74","last_reissued_at":"2026-05-18T04:31:11.794181Z","signature_status":"signed_v1","first_computed_at":"2026-05-18T04:31:11.794181Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"1004.5001","source_version":2,"attestation_state":"computed"},"signer":{"signer_id":"pith.science","signer_type":"pith_registry","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"created_at":"2026-05-18T04:31:11Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"3Thjj49yB6MKbW5ZC3vpMcjDW5qUdN5iHIgN349bwEQcOc60J0YOm0Bh3dG+N78ccpf8nxh4CfoaqFKgBKbwDA==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-05-26T11:15:38.655944Z"},"content_sha256":"5662b5db846e818923fc3912bb264b6dba878d5d20b11b1aff58c04f6dd9871f","schema_version":"1.0","event_id":"sha256:5662b5db846e818923fc3912bb264b6dba878d5d20b11b1aff58c04f6dd9871f"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2010:7N7MZT65NV6UZ7QV6UQBGDOM23","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Is room temperature ferromagnetism possible in K-doped SnO2?","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"cond-mat.mtrl-sci","authors_text":"B. Barbara, G. Bouzerar, P. Lejay, S. K. Srivastava, S. Pailh\\`es, V. Madigou","submitted_at":"2010-04-28T11:26:18Z","abstract_excerpt":"Ab initio studies have theoretically predicted room temperature ferromagnetism in crystalline SnO2, ZrO2 and TiO2 doped with non magnetic element from the 1A column as K and Na. Our purpose is to address experimentally the possibility of magnetism in both Sn1-xKxO2 and Sn1-xCaxO2 compounds. The samples have been prepared using equilibrium methods of standard solid state route. Our study has shown that both Sn1-xCaxO2 and Sn1-xKxO2 structure is thermodynamically unstable and leads to a phase separation, as shown by X-ray diffraction and detailed micro-structural analyses with high resolution tr"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1004.5001","kind":"arxiv","version":2},"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":"2026-05-18T04:31:11Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"rAmigFl/zDCHAwCyAECvirxP93A7Psu/lmOCyQnwzKYu0FeT3pvi1MCh3pHB0p+TAtw+uJ9BGnM4x6Y/hLR/Dw==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-05-26T11:15:38.656422Z"},"content_sha256":"ab90ee1e06e02843f534158d7954d39e53720244a5ffd2273ef9ff634307408e","schema_version":"1.0","event_id":"sha256:ab90ee1e06e02843f534158d7954d39e53720244a5ffd2273ef9ff634307408e"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/7N7MZT65NV6UZ7QV6UQBGDOM23/bundle.json","state_url":"https://pith.science/pith/7N7MZT65NV6UZ7QV6UQBGDOM23/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/7N7MZT65NV6UZ7QV6UQBGDOM23/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":"2026-05-26T11:15:38Z","links":{"resolver":"https://pith.science/pith/7N7MZT65NV6UZ7QV6UQBGDOM23","bundle":"https://pith.science/pith/7N7MZT65NV6UZ7QV6UQBGDOM23/bundle.json","state":"https://pith.science/pith/7N7MZT65NV6UZ7QV6UQBGDOM23/state.json","well_known_bundle":"https://pith.science/.well-known/pith/7N7MZT65NV6UZ7QV6UQBGDOM23/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2010:7N7MZT65NV6UZ7QV6UQBGDOM23","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":"c776883089fad438459debcc84c42e6ed9fafd51ae82ff75da3665db2fa0e586","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.mtrl-sci","submitted_at":"2010-04-28T11:26:18Z","title_canon_sha256":"538df2f899524ab5be07b1b16c000a1197d3219fe8257ce11f4598f1c870cf17"},"schema_version":"1.0","source":{"id":"1004.5001","kind":"arxiv","version":2}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1004.5001","created_at":"2026-05-18T04:31:11Z"},{"alias_kind":"arxiv_version","alias_value":"1004.5001v2","created_at":"2026-05-18T04:31:11Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1004.5001","created_at":"2026-05-18T04:31:11Z"},{"alias_kind":"pith_short_12","alias_value":"7N7MZT65NV6U","created_at":"2026-05-18T12:26:05Z"},{"alias_kind":"pith_short_16","alias_value":"7N7MZT65NV6UZ7QV","created_at":"2026-05-18T12:26:05Z"},{"alias_kind":"pith_short_8","alias_value":"7N7MZT65","created_at":"2026-05-18T12:26:05Z"}],"graph_snapshots":[{"event_id":"sha256:ab90ee1e06e02843f534158d7954d39e53720244a5ffd2273ef9ff634307408e","target":"graph","created_at":"2026-05-18T04:31:11Z","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":"Ab initio studies have theoretically predicted room temperature ferromagnetism in crystalline SnO2, ZrO2 and TiO2 doped with non magnetic element from the 1A column as K and Na. Our purpose is to address experimentally the possibility of magnetism in both Sn1-xKxO2 and Sn1-xCaxO2 compounds. The samples have been prepared using equilibrium methods of standard solid state route. Our study has shown that both Sn1-xCaxO2 and Sn1-xKxO2 structure is thermodynamically unstable and leads to a phase separation, as shown by X-ray diffraction and detailed micro-structural analyses with high resolution tr","authors_text":"B. Barbara, G. Bouzerar, P. Lejay, S. K. Srivastava, S. Pailh\\`es, V. Madigou","cross_cats":[],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.mtrl-sci","submitted_at":"2010-04-28T11:26:18Z","title":"Is room temperature ferromagnetism possible in K-doped SnO2?"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1004.5001","kind":"arxiv","version":2},"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":"sha256:5662b5db846e818923fc3912bb264b6dba878d5d20b11b1aff58c04f6dd9871f","target":"record","created_at":"2026-05-18T04:31:11Z","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":"c776883089fad438459debcc84c42e6ed9fafd51ae82ff75da3665db2fa0e586","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.mtrl-sci","submitted_at":"2010-04-28T11:26:18Z","title_canon_sha256":"538df2f899524ab5be07b1b16c000a1197d3219fe8257ce11f4598f1c870cf17"},"schema_version":"1.0","source":{"id":"1004.5001","kind":"arxiv","version":2}},"canonical_sha256":"fb7ecccfdd6d7d4cfe15f520130dccd6ffc18ecb7c99092f64faad4c5fa2ea74","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"fb7ecccfdd6d7d4cfe15f520130dccd6ffc18ecb7c99092f64faad4c5fa2ea74","first_computed_at":"2026-05-18T04:31:11.794181Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T04:31:11.794181Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"b8sjGswMmJEl5W0JCzYXeDXHFON6xOW6bNZPw/zndMMo2QqydpNIRizjUmqKtaXSd9hDKGFhlTA2rVSzYub4AA==","signature_status":"signed_v1","signed_at":"2026-05-18T04:31:11.794696Z","signed_message":"canonical_sha256_bytes"},"source_id":"1004.5001","source_kind":"arxiv","source_version":2}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:5662b5db846e818923fc3912bb264b6dba878d5d20b11b1aff58c04f6dd9871f","sha256:ab90ee1e06e02843f534158d7954d39e53720244a5ffd2273ef9ff634307408e"],"state_sha256":"703a2bce273fb4f38483df4b78d8a08fadeedb65328683b2c7947a3ead65b12a"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"JHdc8NjE5v4VewHdFC1dzJ5xTxcX7BGvOy8dPp0KIWVajQO8kCz11boMhcikrBAdIDDq54e5gzSKSCb8J8DcCQ==","signed_message":"bundle_sha256_bytes","signed_at":"2026-05-26T11:15:38.658984Z","bundle_sha256":"62bdf58c28fb31830c388a1d088057ed1caacce9938848fd6da720c96652bfaa"}}