Investigation of magnetic dead layer on iron silicide surfaces

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

Research output: Contribution to journalArticle

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

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Iron
iron
Silicon
Temperature
Optical Kerr effect
Silicides
silicides
Kerr effects
Magnetization
templates
magnetization
silicon
room temperature

All Science Journal Classification (ASJC) codes

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

Cite this

Investigation of magnetic dead layer on iron silicide surfaces. / Kibria, Mohammad Tawheed; Nomitsu, Tatsushi; Nakagawa, Takeshi; Mizuno, Seigi.

In: e-Journal of Surface Science and Nanotechnology, Vol. 16, 26.04.2018, p. 101-104.

Research output: Contribution to journalArticle

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