Study of magnetic properties of nano-powders prepared by pyrite -> troilite transformation via high energy milling

P. Balaz, A. Alacova, E. Godocikova, J. Kovac, I. Skorvanek, Jianzhong Jiang

Research output: Contribution to journalJournal articleResearchpeer-review

Abstract

The preparation of nanocrystalline troilite by high-energy milling of FeS2 sulphide with elemental Fe acting as reducing element is reported. X-ray difractometry was used in order to determine the presence of different phases in investigated samples. This technique allowed us to identify the formation of troilite FeS together with residual Fe metal after relatively short milling times. The kinetic studies performed by Mossbauer spectrometry and VSM magnetometry enabled us to follow the progress of nanocrystalline magnetic phase formation in more details. It was shown that the pyrite-->troilite transformation is almost finished already after 25 minutes of high-energy milling.
Original languageEnglish
JournalCzechoslovak Journal of Physics
Volume54
Pages (from-to)D197-D200
Number of pages4
ISSN0011-4626
Publication statusPublished - 2004

Keywords

  • mechanochemistry
  • troilite
  • nanocrystalline powders
  • magnetization
  • Mossbauer spectrometry

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