Structural, electrical and mechanical properties of AgAuSi thin film metallic glasses on polymer substrates
Publikationen: Thesis / Studienabschlussarbeiten und Habilitationsschriften › Masterarbeit
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2021.
Publikationen: Thesis / Studienabschlussarbeiten und Habilitationsschriften › Masterarbeit
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TY - THES
T1 - Structural, electrical and mechanical properties of AgAuSi thin film metallic glasses on polymer substrates
AU - Weniger, Lisa-Marie
N1 - embargoed until null
PY - 2021
Y1 - 2021
N2 - 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.
AB - 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.
KW - Metallische Gläser
KW - Dünnschichten
KW - AgAuSi
KW - Magnetronsputterverfahren
KW - elektrische Eigenschaften
KW - strukturelle Eigenschaften
KW - mechanische Eigenschaften
KW - metallic glasses
KW - thin films
KW - magnetron sputter deposition
KW - AgAuSi
KW - electrical properties
KW - structural properties
KW - mechanical properties
M3 - Master's Thesis
ER -