Investigation of Magnetic Dead Layer on Iron Silicide Surfaces

Mohammad Tawheed Kibria, Tatsushi Nomitsu, Takeshi Nakagawa, Seigi Mizuno

Research output: Contribution to journalArticle

1 Citation (Scopus)

Abstract

We report the magnetic dead layer at the interfaces between Fe and Si(111) surfaces. We prepared two ultrathin iron-silicides, c(8×4) prepared at 900 K and p(2×2) at 700 K, and clean reconstructed 7×7 surface for the silicon templates. By using magneto-optical Kerr effect, we found that at room temperature the ferromagnetic order appears at 5.5 ML, 8.2 ML, and 10.9 ML for Fe/c(8×4) silicide, Fe/p(2×2) silicide, and Fe/Si(111)-7×7 surface, respectively. From the thickness dependent magnetization measurements, we decided the magnetic dead layer for Fe/c(8×4) silicide, Fe/p(2×2) silicide, and Fe/Si(111)-7×7 to be 3.0 ML, 5.0 ML, and 7.5 ML, respectively. Our results indicate that the c(8×4) iron silicide surface prevents further silicide formation more effectively than the p(2×2) silicide and Si(111)-7×7 surface.

Original languageEnglish
Pages (from-to)101-104
Number of pages4
Journale-Journal of Surface Science and Nanotechnology
Volume16
DOIs
Publication statusPublished - Apr 26 2018

All Science Journal Classification (ASJC) codes

  • Biotechnology
  • Bioengineering
  • Condensed Matter Physics
  • Mechanics of Materials
  • Surfaces and Interfaces
  • Surfaces, Coatings and Films

Fingerprint Dive into the research topics of 'Investigation of Magnetic Dead Layer on Iron Silicide Surfaces<sup>∗</sup>'. Together they form a unique fingerprint.

  • Cite this