Investigation of morphological surface features, wetting behavior and mechanical traits under various substrate temperatures for beta iron disilicide prepared via facing-targets sputtering

Peerasil Charoenyuenyao, Rawiwan Chaleawpong, Nattakorn Borwornpornmetee, Boonchoat Paosawatyanyong, Phongsaphak Sittimart, Tsuyoshi Yoshitake, Nathaporn Promros

研究成果: ジャーナルへの寄稿学術誌査読

抄録

Using facing-targets sputtering, semiconducting iron disilicide (β-FeSi2) film layers were sputtered and coated on Si wafers owning (111) orientation. Under experimental conditions, the heating temperatures of the substrate (Tsubstrate) were varied at 525 °C, 550 °C, 600 °C and 660 °C. The acquired XRD patterns indicated a strong β(202/220) peak of around 29.1° for the β-FeSi2 films prepared at a Tsubstrate of at least 600 °C. The β-FeSi2 film surface prepared at a Tsubstrate of 525 °C comprised several crystallites, which were arranged to form a grain format at a higher Tsubstrate. The root mean square roughness for the film surface prepared at a Tsubstrate of 525 °C was 0.49 nm, where it increased to 0.98 nm, 2.39 nm, and 4.23 nm at Tsubstrate of 550 °C, 600 °C, and 660 °C, respectively. The films prepared at a Tsubstrate of 525 °C exhibited an average contact angle (θCA) of 91.15°, and improved to 103.80° after employing a Tsubstrate of 660 °C. These results hinted at the possibility of employing the β-FeSi2 films prepared at all Tsubstrate in the hydrophobic surface application. The estimated hardness and elastic modulus of the β-FeSi2 films prepared at Tsubstrate of 525 °C were 12.78 GPa and 190.98 GPa, respectively, which increased to 21.27 GPa and 248.67 GPa, respectively, for the films prepared at 660 °C. According to mechanical results, the β-FeSi2 films prepared at 660 °C exhibited the potential to be developed for use in hard coating application.

本文言語英語
論文番号106604
ジャーナルMaterials Science in Semiconductor Processing
146
DOI
出版ステータス出版済み - 8月 1 2022

!!!All Science Journal Classification (ASJC) codes

  • 材料科学(全般)
  • 凝縮系物理学
  • 材料力学
  • 機械工学

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