{"paper":{"title":"Synthesis of high-oxidation Y-Ba-Cu-O phases in superoxygenated thin films","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"cond-mat.supr-con","authors_text":"C. McMahon, D. G. Hawthorn, G. A. Botton, H. Zhang, J. Y.T. Wei, N. Gauquelin","submitted_at":"2017-10-29T18:58:17Z","abstract_excerpt":"It is known that solid-state reaction in high-pressure oxygen can stabilize high-oxidation phases of Y-Ba-Cu-O superconductors in powder form. We extend this superoxygenation concept of synthesis to thin films which, due to their large surface-to-volume ratio, are more reactive thermodynamically. Epitaxial thin films of $\\rm{YBa_2Cu_3O_{7-\\delta}}$ grown by pulsed laser deposition are annealed at up to 700 atm O$_2$ and 900$^\\circ$C, in conjunction with Cu enrichment by solid-state diffusion. The films show clear formation of $\\rm{Y_2Ba_4Cu_7O_{15-\\delta}}$ and $\\rm{Y_2Ba_4Cu_8O_{16}}$ as well"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1710.10672","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"}