Diluted magnetic semiconductor nanoparticles fabricated by the Langmuir-Blodgett technique

T. Yamaki, T. Yamada, K. Asai, K. Ishigure

Research output: Contribution to journalArticlepeer-review

7 Citations (Scopus)

Abstract

We report the first example of diluted magnetic semiconductor (DMS) fine particles incorporated into Langmuir-Blodgett (LB) films. Cd1•xMnxS(X · 0.45, 0.27 and 0.20) fine particles with about a 3-nm diameter were prepared through the reaction of arachidate LB films containing Cd and Mn with hydrogen sulfide (H2S) in an atmosphere of NH3. Electron spin resonance (ESR) measurements, before and after H2S treatment, gave information on the mi crostructural changes which occurred in the film during particle formation. The anomalous broadening of the line shape and the anisotropic properties of quasi two-dimensional magnets were observed before H2S treatment, while, after H2S treatment, these characteristic features completely disappeared, and atypical exchange-narrowed line arose. The drastic changes observed here indicate that Cd1•XMnxS fine particles were produced in a spherical shape, not in a two-dimensional sheet.

Original languageEnglish
Pages (from-to)586-590
Number of pages5
JournalThin Solid Films
Volume327-329
Issue number1-2
DOIs
Publication statusPublished - 1998 Jan 1
Externally publishedYes

Keywords

  • Diluted magnetic semiconductor
  • Electron spin resonance
  • Langmuir-Blodgett technique
  • Nanoparticle
  • Two-dimensional magnet

ASJC Scopus subject areas

  • Electronic, Optical and Magnetic Materials
  • Surfaces and Interfaces
  • Surfaces, Coatings and Films
  • Metals and Alloys
  • Materials Chemistry

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