Magnetic properties of epitaxial single crystal ultrathin Fe3Si films on GaAs (001)

S. H. Liou, S. S. Malhotra, J. X. Shen, M. Hong, J. Kwo, H. S. Chen, J. P. Mannaerts

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43 Scopus citations

Abstract

Magnetic properties of Fe3Si films with thickness from 2 to 210 monolayers (ML) epitaxially grown on GaAs (001) were studied using a superconducting quantum interference device and alternating gradient force magnetometers. Growth of these single-crystal intermetallic compound films were carried out in a multichamber molecular beam epitaxy (MBE) system. The samples were covered in situ with Au 50 Å thick to prevent oxidation when the samples were removed from the MBE chamber. All the films are ferromagnetic even for samples as thin as 2 ML. The easy magnetization direction of the films is parallel to the film surface. The magnetic coercivity forces (Hc) of the samples increase as the film thickness decreases to 10 ML, and then decrease when the film thickness decreases further to 2 ML.

Original languageEnglish (US)
Pages (from-to)6766-6768
Number of pages3
JournalJournal of Applied Physics
Volume73
Issue number10
DOIs
StatePublished - 1993

ASJC Scopus subject areas

  • Physics and Astronomy(all)

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