Structural, electrical and mechanical properties of AgAuSi thin film metallic glasses on polymer substrates

Lisa-Marie Weniger

Research output: ThesisMaster's Thesis

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Abstract

In this thesis, the structural, electrical and mechanical properties of AgxAu85-xSi15 thin film metallic glasses (TFMGs) on polymer substrates were investigated. The films were fabricated by magnetron sputter deposition from three elemental targets, which allowed to systematically vary the composition and film thickness. In contrast to crystalline metals, where the electrical resistivity increases with decreasing film thickness, AgAuSi TFMGs were found to have a decreasing electrical resistance with decreasing film thickness. Additionally, ultrathin TFMGs with a thickness of 12 nm exhibited superior mechanical properties that were linked to the suppression of shear bands, where no material damage occurred after straining the films up to 10%. In cyclic bending tests, AgAuSi TFMGs outperformed crystalline metals due to their high elastic straining limit. The combination of these remarkable properties makes AgAuSi TFMGs possible candidates for future materials in flexible electronics.
Translated title of the contributionStrukturelle, elektrische und mechanische Eigenschaften von dünnen AgAuSi metallischen Gläsern auf Polymersubstraten
Original languageEnglish
QualificationDipl.-Ing.
Awarding Institution
  • Montanuniversität
Supervisors/Advisors
  • Mitterer, Christian, Supervisor (internal)
Award date25 Jun 2021
Publication statusPublished - 2021

Bibliographical note

embargoed until null

Keywords

  • metallic glasses
  • thin films
  • magnetron sputter deposition
  • AgAuSi
  • electrical properties
  • structural properties
  • mechanical properties

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