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Knut Deppert

Knut Deppert

Professor

Knut Deppert

Size-controlled nanoparticles by thermal cracking of iron pentacarbonyl

Author

  • Martin Karlsson
  • Knut Deppert
  • Brent Wacaser
  • Lisa Karlsson
  • Jan-Olle Malm

Summary, in English

A gas-phase method has been developed for producing size-controlled nanoparticles by thermal cracking of iron pentacarbonyl. The method includes the formation of iron particles from vapor emanating from the cracking of the volatile compound and subsequent compacting of the selected particles. Different temperature steps were involved in the process, and their effects on the particle production were investigated. On-line differential mobility measurements and off-line transmission electron microscopy (TEM) were used to study the morphology, composition and structure of the generated particles. The aim of the study was to produce nanoparticles of pure iron. After transportation in air, the composition of the particles was analyzed by TEM and found to be magnetite, Fe3O4. The oxidation may be attributed to the exposure to air and humidity during the transport. The phase of the uncontaminated particles could not be determined. Tests for growth of silicon nanowhiskers using nanoparticles produced with this method were successful.

Department/s

  • Solid State Physics
  • Centre for Analysis and Synthesis

Publishing year

2005

Language

English

Pages

1579-1583

Publication/Series

Applied Physics A: Materials Science & Processing

Volume

80

Issue

7

Document type

Journal article

Publisher

Springer

Topic

  • Condensed Matter Physics
  • Chemical Sciences

Status

Published

ISBN/ISSN/Other

  • ISSN: 1432-0630