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Structural Evolution that Affects the Room-Temperature Internal Friction of Binary Oxide Nanolaminates: Implications for Ultrastable Optical Cavities

Yang, Le and Fazio, Mariana and Vajente, Gabriele and Ananyeva, Alena and Billingsley, Garilynn and Markosyan, Ashot and Bassiri, Riccardo and Fejer, Martin M. and Menoni, Carmen S. (2020) Structural Evolution that Affects the Room-Temperature Internal Friction of Binary Oxide Nanolaminates: Implications for Ultrastable Optical Cavities. ACS Applied Nano Materials, 3 (12). pp. 12308-12313. ISSN 2574-0970. https://resolver.caltech.edu/CaltechAUTHORS:20201215-094032205

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Abstract

Internal friction in oxide thin films imposes a critical limitation to the sensitivity and stability of the ultrahigh finesse optical cavities for gravitational wave detectors. Strategies like doping or creating nanolaminates (NL) are sought to introduce structural modifications that reduce internal friction. This work describes an investigation of the morphological changes SiO₂/Ta₂O₅ and TiO₂/Ta₂O₅ nanolaminates undergo with annealing and their impact on room-temperature internal friction. It is demonstrated that thermal treatment results in a reduction of internal friction in both nanolaminates but through different pathways. In the SiO₂/Ta₂O₅ nanolaminate, the layers of which remain intact after annealing, the total reduction in internal friction follows the reduction in the composing SiO₂ and Ta₂O₅ layers. In contrast, interdiffusion initiated by annealing at the interface in the TiO₂/Ta₂O₅ nanolaminate leads to the formation of a mixed phase. It is the interfacial reaction upon annealing that dictates the more significant reduction in internal friction to ∼2.6 × 10⁻⁴, a value lower than any other Ta₂O₅ mixture coating with similar cation concentration.


Item Type:Article
Related URLs:
URLURL TypeDescription
https://doi.org/10.1021/acsanm.0c02798DOIArticle
ORCID:
AuthorORCID
Yang, Le0000-0002-8868-5977
Vajente, Gabriele0000-0002-7656-6882
Billingsley, Garilynn0000-0002-4141-2744
Fejer, Martin M.0000-0002-5512-1905
Menoni, Carmen S.0000-0001-9185-2572
Additional Information:© 2020 American Chemical Society. Received: October 19, 2020; Accepted: November 30, 2020; Published: December 8, 2020. This work is supported by the National Science Foundation LIGO program through Grant Nos. 1710957 and 1708010. We also acknowledge the support of the LSC Center for Coatings Research, jointly funded by the National Science Foundation (NSF) and the Gordon and Betty Moore Foundation. A.M., R.B., and M.M.F. are grateful for the support through NSF awards PHY-1707866, PHY-1708175, and GBMF Grant No. 6793. Partial support from Grant ONR No. N00014-17-1-2536 is acknowledged. We thank Riccardo DeSalvo, Innocenzo Pinto, and Manel Molina Ruiz for the useful discussions. The authors declare no competing financial interest.
Group:LIGO
Funders:
Funding AgencyGrant Number
NSFPHY-1710957
NSFPHY-1708010
Gordon and Betty Moore Foundation6793
NSFPHY-1707866
NSFPHY-1708175
Office of Naval Research (ONR)N00014-17-1-2536
Subject Keywords:nanolaminates, binary oxides, internal friction, two-level systems, ultrastable optical cavity
Issue or Number:12
Record Number:CaltechAUTHORS:20201215-094032205
Persistent URL:https://resolver.caltech.edu/CaltechAUTHORS:20201215-094032205
Official Citation:Structural Evolution that Affects the Room-Temperature Internal Friction of Binary Oxide Nanolaminates: Implications for Ultrastable Optical Cavities. Le Yang, Mariana Fazio, Gabriele Vajente, Alena Ananyeva, GariLynn Billingsley, Ashot Markosyan, Riccardo Bassiri, Martin M. Fejer, and Carmen S. Menoni. ACS Applied Nano Materials 2020 3 (12), 12308-12313; DOI: 10.1021/acsanm.0c02798
Usage Policy:No commercial reproduction, distribution, display or performance rights in this work are provided.
ID Code:107083
Collection:CaltechAUTHORS
Deposited By: Tony Diaz
Deposited On:15 Dec 2020 20:06
Last Modified:05 Jan 2021 22:11

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