{"paper":{"title":"A new method of probing mechanical losses of coatings at cryogenic temperatures","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":["cond-mat.mtrl-sci"],"primary_cat":"physics.ins-det","authors_text":"Antoine Heidmann, Christophe Michel, Gianpietro Cagnoli, Laurent Pinard, Leonhard Neuhaus, Maxim Goryachev, Michael E. Tobar, Philippe Abb\\'e, Pierre-Fran\\c{c}ois Cohadon, Roger Bourquin, Salim Zerkani, Samuel Del\\'eglise, Serge Galliou, Thibaut Karassouloff, Tristan Briant, Vincent Dolique, Xavier Vacheret","submitted_at":"2016-05-25T01:25:36Z","abstract_excerpt":"A new method of probing mechanical losses and comparing the corresponding deposition processes of metallic and dielectric coatings in 1-100 MHz frequency range and cryogenic temperatures is presented. The method is based on the use of extremely high-quality quartz acoustic cavities whose internal losses are orders of magnitude lower than any available coatings nowadays. The approach is demonstrated for Chromium, Chromium/Gold and a multilayer tantala/silica coatings. The ${\\rm Ta}_2{\\rm O}_5/{\\rm Si}{\\rm O}_2$ coating has been found to exhibit a loss angle lower than $1.6\\times10^{-5}$ near 30"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1605.07697","kind":"arxiv","version":1},"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"}