Origin of ferromagnetism of MnSi1.7 nanoparticles in Si: First-principles calculations

Shin Yabuuchi, Hiroyuki Kageshima, Yukinori Ono, Masao Nagase, Akira Fujiwara, Eiji Ohta

Research output: Contribution to journalArticle

22 Citations (Scopus)

Abstract

The origin of the magnetism of MnSi1.7 nanoparticles in Si is investigated using the first-principles calculations: bulk and interface effects are considered. The bulk magnetic property is expected to be affected by stoichiometry, strain, and charge accumulation. Stoichiometry and charge accumulation induce a ferromagnetic state, and strain stabilizes the ferromagnetic state. Another factor, the MnSi1.7 /Si interface formation, is seen as triggering ferromagnetism strongly localized at the interface. These two mechanisms are shown to be related to the experimentally determined hard and soft components, respectively.

Original languageEnglish
Article number045307
JournalPhysical Review B - Condensed Matter and Materials Physics
Volume78
Issue number4
DOIs
Publication statusPublished - 2008 Jul 11

ASJC Scopus subject areas

  • Electronic, Optical and Magnetic Materials
  • Condensed Matter Physics

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