Thermal behavior of iron nanoparticles synthesized by chemical vapor condensation

Oleg V. Tolochko, Chul Jin Choi, Albert G. Nasibulin, Katerina S. Vasilieva, D. W. Lee, D. Kim

Research output: Contribution to journalArticlepeer-review

1 Citation (Scopus)

Abstract

Iron nanoparticles were prepared by chemical vapor condensation (CVC) using iron pentacarbonyl, Fe(CO) 5, as a precursor under inert Ar and He atmospheres in a flow reactor. Subsequently, the produced nanoparticles were heat-treated at different temperatures in air. The processes of the particle morphology and phase composition changes were studied. It was found that under the continuous thermal treatment the iron nanopowders were continuously transformed from oxide-coated iron via void magnetite to large hematite nanoparticles. It was shown that low temperature heat-treatment allowed to improve magnetic properties of the oxide-coated iron nanoparticles.

Original languageEnglish
Pages (from-to)57-63
Number of pages7
JournalMaterials Physics and Mechanics
Volume13
Issue number1
Publication statusPublished - 2012
Externally publishedYes

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