Magnetic properties of SiO2-coated Fe nanoparticles

Mingzhong Wu, Y. D. Zhang, S. Hui, T. D. Xiao, Shihui Ge, W. A. Hines, J. I. Budnick, M. J. Yacaman

Research output: Contribution to journalArticlepeer-review

57 Scopus citations

Abstract

The synthesis of SiO2-coated Fe nanoparticles and their structural and magnetic properties were discussed. The saturation magnetization of the particles increased with increasing calcination temperature, while their coercivity decreased with the increase in calcination temperature. The exchange anisotropy arising from the exchanged acrossed the Fe/ferrihydrite interfaces was investigated and was used in interpreting the observed temperature behaviors.

Original languageEnglish (US)
Pages (from-to)6809-6812
Number of pages4
JournalJournal of Applied Physics
Volume92
Issue number11
DOIs
StatePublished - Dec 1 2002
Externally publishedYes

ASJC Scopus subject areas

  • Physics and Astronomy(all)

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