Electron spin resonance study of a platinum-manganese complex in silicon

T. Ishiyama, N. Murakami, Y. Kamiura, Y. Yamashita

Research output: Contribution to journalArticle

2 Citations (Scopus)

Abstract

We observed ESR signals related to Pt and Mn in both n-type and p-type Si. The observed hyperfine structure clearly indicates that the Pt-Mn complex involves one Pt atom and one Mn atom. The anisotropic g-tensor obtained by analyzing the angular dependence of the ESR signals indicates the trigonal (C3v) symmetry with the g-values of g|| = 2.2, g = 2.1, and the g|| axis along the 〈1 1 1〉 direction. Since it has been known that isolated Pt and Mn atoms occupy substitutional and interstitial sites in Si, respectively, we expect that the Pt-Mn complex consists of a substitutional Pt and an interstitial Mn. In addition, we investigated the dissociation of the complex by thermal treatment at 350-400 °C. The activation energy for the dissociation was determined to be 0.96 eV, which was a little higher than that for the diffusion of interstitial Mn in Si. We assume that interstitial Mn diffuses away, leaving a substitutional Pt atom after the dissociation of the Pt-Mn complex.

Original languageEnglish
Pages (from-to)198-201
Number of pages4
JournalMaterials Science and Engineering B: Solid-State Materials for Advanced Technology
Volume159-160
Issue numberC
DOIs
Publication statusPublished - Mar 15 2009

Keywords

  • Dissociation
  • Electron spin resonance
  • Manganese
  • Platinum
  • Silicon

ASJC Scopus subject areas

  • Materials Science(all)
  • Condensed Matter Physics
  • Mechanics of Materials
  • Mechanical Engineering

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