{"paper":{"title":"Effects of Ion Milling on the Microwave Properties of MgB2 Films","license":"","headline":"","cross_cats":[],"primary_cat":"cond-mat.supr-con","authors_text":"B. Oh, H.N. Lee, J.H. Lee, J. Lim, M.A. Hein, Sang Young Lee, S.H. Moon","submitted_at":"2002-08-15T17:04:43Z","abstract_excerpt":"The new superconductor MgB2 may prove useful for microwave applications at intermediate temperatures. MgB2 films with the thickness of 300 - 400 nm have surface resistance Rs less than 0.01 mOhms at a frequency (f) of 8.5 GHz and 7 K,and ~ 1.5 mOhms at 87 GHz and 4.2 K. The critical temperature (Tc) of these films is ~ 39 K when they are prepared under optimum conditions. The Rs appears to scale as f^2 up to 30 K. After surface ion-milling, a reduction of the Tc and an enhanced resistivity rho(Tc) are observed consistently at 8.5 GHz and 87 GHz along with a reduced Rs at low temperatures. The "},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"cond-mat/0208304","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"}