Obtaining and studying the composition, structure and properties of nanophases and nanolayers of CoSi2


Umirzakov B., Jumayev Z. M., Bekpulatov I., Turapov I. K., Imanova G., Farmonov N.

Materials Research Innovations, 2024 (Scopus) identifier

  • Publication Type: Article / Article
  • Publication Date: 2024
  • Doi Number: 10.1080/14328917.2024.2350827
  • Journal Name: Materials Research Innovations
  • Journal Indexes: Scopus, Academic Search Premier, Aerospace Database, Applied Science & Technology Source, Chemical Abstracts Core, Communication Abstracts, Compendex, Computer & Applied Sciences, INSPEC, Metadex, Civil Engineering Abstracts
  • Keywords: cobalt disilicide, heterostructure, ion-implantation, nanoelectronics, nanosize, silicide, single crystal, Surface
  • Azerbaijan State University of Economics (UNEC) Affiliated: No

Abstract

The processes of formation of a thin film of cobalt disilicide on the silicon surface due to the formation of several nuclei of atomic thickness on the surface of the silicon substrate are presented. To create these structures, the ion implantation method was used. The dependence of the depth of penetration of ions into the substrate during ion implantation on temperature and ion dose was determined. In the case of implantation of Co+ ions into Si at room temperature silicon uniformly combines with Co atoms at a depth of 3.5–4 nm, the Co concentration in these layers is 45–50 at. %. Co has been shown to form chemical bonds with Si atoms in the sample containing 40–45 atomic % of Co. When implanting Co+ into Si at 600 K, it was found that the depth of the same added layer is 2.5–3 nm, and CCo forming bonds with Si atoms increases to 85–90%.