Deformation behavior of Re alloyed Mo thin films on flexible substrates: In situ fragmentation analysis supported by first-principles calculations

Abstract A major obstacle in the utilization of Mo thin films in flexible electronics is their brittle fracture behavior. Within this study, alloying with Re is explored as a potential strategy to improve the resistance to fracture. The sputter-deposited Mo1−xRex films (with 0 ≤ x ≤ 0.31) were chara...

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Autores principales:	Tanja Jörg, Denis Music, Filipe Hauser, Megan J. Cordill, Robert Franz, Harald Köstenbauer, Jörg Winkler, Jochen M. Schneider, Christian Mitterer
Formato:	article
Lenguaje:	EN
Publicado:	Nature Portfolio 2017
Materias:	Medicine R Science Q
Acceso en línea:	https://doaj.org/article/e2b4673aca9b405597316078b3ce50a7
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spelling	oai:doaj.org-article:e2b4673aca9b405597316078b3ce50a72021-12-02T16:06:02ZDeformation behavior of Re alloyed Mo thin films on flexible substrates: In situ fragmentation analysis supported by first-principles calculations10.1038/s41598-017-07825-12045-2322https://doaj.org/article/e2b4673aca9b405597316078b3ce50a72017-08-01T00:00:00Zhttps://doi.org/10.1038/s41598-017-07825-1https://doaj.org/toc/2045-2322Abstract A major obstacle in the utilization of Mo thin films in flexible electronics is their brittle fracture behavior. Within this study, alloying with Re is explored as a potential strategy to improve the resistance to fracture. The sputter-deposited Mo1−xRex films (with 0 ≤ x ≤ 0.31) were characterized in terms of structural and mechanical properties, residual stresses as well as electrical resistivity. Their deformation behavior was assessed by straining 50 nm thin films on polyimide substrates in uniaxial tension, while monitoring crack initiation and propagation in situ by optical microscopy and electrical resistance measurements. A significant toughness enhancement occurs with increasing Re content for all body-centered cubic solid solution films (x ≤ 0.23). However, at higher Re concentrations (x > 0.23) the positive effect of Re is inhibited due to the formation of dual-phase films with the additional close packed A15 Mo3Re phase. The mechanisms responsible for the observed toughness behavior are discussed based on experimental observations and electronic structure calculations. Re gives rise to both increased plasticity and bond strengthening in these Mo-Re solid solutions.Tanja JörgDenis MusicFilipe HauserMegan J. CordillRobert FranzHarald KöstenbauerJörg WinklerJochen M. SchneiderChristian MittererNature PortfolioarticleMedicineRScienceQENScientific Reports, Vol 7, Iss 1, Pp 1-10 (2017)
institution	DOAJ
collection	DOAJ
language	EN
topic	Medicine R Science Q
spellingShingle	Medicine R Science Q Tanja Jörg Denis Music Filipe Hauser Megan J. Cordill Robert Franz Harald Köstenbauer Jörg Winkler Jochen M. Schneider Christian Mitterer Deformation behavior of Re alloyed Mo thin films on flexible substrates: In situ fragmentation analysis supported by first-principles calculations
description	Abstract A major obstacle in the utilization of Mo thin films in flexible electronics is their brittle fracture behavior. Within this study, alloying with Re is explored as a potential strategy to improve the resistance to fracture. The sputter-deposited Mo1−xRex films (with 0 ≤ x ≤ 0.31) were characterized in terms of structural and mechanical properties, residual stresses as well as electrical resistivity. Their deformation behavior was assessed by straining 50 nm thin films on polyimide substrates in uniaxial tension, while monitoring crack initiation and propagation in situ by optical microscopy and electrical resistance measurements. A significant toughness enhancement occurs with increasing Re content for all body-centered cubic solid solution films (x ≤ 0.23). However, at higher Re concentrations (x > 0.23) the positive effect of Re is inhibited due to the formation of dual-phase films with the additional close packed A15 Mo3Re phase. The mechanisms responsible for the observed toughness behavior are discussed based on experimental observations and electronic structure calculations. Re gives rise to both increased plasticity and bond strengthening in these Mo-Re solid solutions.
format	article
author	Tanja Jörg Denis Music Filipe Hauser Megan J. Cordill Robert Franz Harald Köstenbauer Jörg Winkler Jochen M. Schneider Christian Mitterer
author_facet	Tanja Jörg Denis Music Filipe Hauser Megan J. Cordill Robert Franz Harald Köstenbauer Jörg Winkler Jochen M. Schneider Christian Mitterer
author_sort	Tanja Jörg
title	Deformation behavior of Re alloyed Mo thin films on flexible substrates: In situ fragmentation analysis supported by first-principles calculations
title_short	Deformation behavior of Re alloyed Mo thin films on flexible substrates: In situ fragmentation analysis supported by first-principles calculations
title_full	Deformation behavior of Re alloyed Mo thin films on flexible substrates: In situ fragmentation analysis supported by first-principles calculations
title_fullStr	Deformation behavior of Re alloyed Mo thin films on flexible substrates: In situ fragmentation analysis supported by first-principles calculations
title_full_unstemmed	Deformation behavior of Re alloyed Mo thin films on flexible substrates: In situ fragmentation analysis supported by first-principles calculations
title_sort	deformation behavior of re alloyed mo thin films on flexible substrates: in situ fragmentation analysis supported by first-principles calculations
publisher	Nature Portfolio
publishDate	2017
url	https://doaj.org/article/e2b4673aca9b405597316078b3ce50a7
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Deformation behavior of Re alloyed Mo thin films on flexible substrates: In situ fragmentation analysis supported by first-principles calculations

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