Growth of colloidal nanoparticles of group II-VI and IV-VI semiconductors on top of magnetic iron-platinum nanocrystals

Marco Zanella, Andrea Falqui, Stefan Kudera, Liberato Manna, Maria F. Casula, Wolfgang J. Parak

Research output: Contribution to journalArticlepeer-review

44 Scopus citations

Abstract

Colloidal hybrid nanoparticles with blebs of II-VI and IV-VI particles on top of FePt particles were successfully grown. Whereas in the case of XE = CdS, ZnS, PbS and CdSe, FePt-XE dimer structures were successfully obtained, the growth failed for XE = ZnSe, PbSe. Structural, magnetic, and optical analysis of the structures revealed a moderate influence of the semiconductor domain on the magnetic properties of the FePt core particle, which can be ascribed to the effect of annealing conditions, atom diffusion and compositional variations during heterostructure formation. On the other hand, we report a significant fluorescence quenching of the semiconductor bleb due to the underlying FePt particle.

Original languageEnglish (US)
Pages (from-to)4311-4317
Number of pages7
JournalJournal of Materials Chemistry
Volume18
Issue number36
DOIs
StatePublished - 2008
Externally publishedYes

ASJC Scopus subject areas

  • Materials Chemistry
  • Chemistry(all)

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