Towards dilute magnetic semiconductors: Fe and Co substituted inorganic-organic hybrid materials based on ZnSe

Xiaoying Huang, Harry R. Neulings IV, Jing Li, Tan Yuen, C. L. Lin

Research output: Contribution to journalArticle

6 Citations (Scopus)

Abstract

Inorganic-organic hybrid nanostructures doped with magnetic ions have been synthesized via substitution of Zn by Co or Fe in the ZnSe(L) 0.5 systems under solvothermal conditions. These dilute magnetic semiconductors (DMS), Zn 1-xM xSe(L) 0.5 (M = Co, Fe; L = ethylenediamine or en, 1,3-propanediamine or pda; 0 < x < 1), are composed of perfectly ordered Zn 1-xM xSe semiconductor monolayers interconnected by organic diamine molecules. The large blue shifts in their optical absorption edges (∼1.1-1.5 eV) compared to the bulk ZnSe are a direct result of a very strong quantum confinement effect (QCE). Magnetic studies show that there exist antiferromagnetic interactions between the Co or Fe centers in the structures and the interaction is enhanced as the doping concentration increases. The introduction of Fe or Co to hybrid inorganic-organic semiconductors provides a promising route to generate materials that combine the advantageous features of inorganic, organic, and magnetic functionalities in a single structure.

Original languageEnglish
Pages (from-to)1487-1491
Number of pages5
JournalJournal of Nanoscience and Nanotechnology
Volume5
Issue number9
DOIs
Publication statusPublished - Dec 1 2005

Keywords

  • Antiferromagnetic interaction
  • Dilute magnetic semiconductor
  • Inorganic-organic hybrid material
  • Nanostructure
  • Quantum confinement effect

ASJC Scopus subject areas

  • Bioengineering
  • Chemistry(all)
  • Biomedical Engineering
  • Materials Science(all)
  • Condensed Matter Physics

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