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When probed by muons in Sr$_2$IrO$_4$ and Sr$_3$Ir$_2$O$_7$ ($n=1,2$), the internal field ($B_{\\rm loc}$) showed clear sign of a magnetic order in two stages at transition temperatures $T_{\\rm N}\\simeq 230$ K and $T_{\\rm m}\\simeq 90$ K in Sr$_2$IrO$_4$ and $T_{\\rm N}\\simeq 280$ K and $T_{\\rm m}\\simeq 70$ K in Sr$_3$Ir$_2$O$_7$, respectively. In contrast, no long-range magnetic order was observed in orthorhombic SrIrO"},"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":"1504.00073","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.str-el","submitted_at":"2015-04-01T00:56:42Z","cross_cats_sorted":[],"title_canon_sha256":"b83e714ad6b4cceee164b0ccce50757e01fa500c5eba3b976fffb693b6a6ba1c","abstract_canon_sha256":"8dc2371d3f40765cee86019c319116f19e37306cada16d0c97a24be3e449e309"},"schema_version":"1.0"},"receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-18T02:19:07.632087Z","signature_b64":"zjBFCmBQQXmd2zYlr9lh9itvgPbZ8Syvz3T8kLasxNte3s2g5O+C7J6RI0Np2NZ3aIl8frk2cIPlMDm8lIkICQ==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"95ed73ea5d15d10c00d690c9d2919e274986e8bdc524a64f174d5eee948442ba","last_reissued_at":"2026-05-18T02:19:07.631591Z","signature_status":"signed_v1","first_computed_at":"2026-05-18T02:19:07.631591Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"graph_snapshot":{"paper":{"title":"Evidence for ordered magnetic moments at oxygen sites in antiferromagnetic Sr$_2$IrO$_4$ and Sr$_3$Ir$_2$O$_7$","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"cond-mat.str-el","authors_text":"A. Koda, H. Takagi, K. M. Kojima, K. Ohashi, M. Hiraishi, M. Miyazaki, R. Kadono, T. Takayama","submitted_at":"2015-04-01T00:56:42Z","abstract_excerpt":"In this study, the magnetic ground state of iridium perovskites (Sr$_{n+1}$Ir$_{n}$O$_{3n+1}$, where $n=1$, 2, and $\\infty$) was considered using muon spin spectroscopy ($\\mu$SR). When probed by muons in Sr$_2$IrO$_4$ and Sr$_3$Ir$_2$O$_7$ ($n=1,2$), the internal field ($B_{\\rm loc}$) showed clear sign of a magnetic order in two stages at transition temperatures $T_{\\rm N}\\simeq 230$ K and $T_{\\rm m}\\simeq 90$ K in Sr$_2$IrO$_4$ and $T_{\\rm N}\\simeq 280$ K and $T_{\\rm m}\\simeq 70$ K in Sr$_3$Ir$_2$O$_7$, respectively. 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