Investigations on in situ nanocrystallization and magnetic properties for amorphous fe78si9b13 ribbons

Xiangcheng Sun, A. Cabral-Prieto, M. Jose Yacaman, Wcnsheng Sun

Research output: Contribution to journalConference articlepeer-review


The amorphous state of ferromagnetic Fe,8Si9B|3 (Metglas 2605S-2) and its nanocrystallization were investigated by I'M situ transmission electron microscope (TEM), Xray diffraction (XRD), Mössbauer spectroscopy (MS), differential scanning calorimeters (DSC) and magnetic moment measurements. The Mössbauer spectrum exhibited an essentially symmetric hyperfine field pattern of 259KOe in as-quenched amorphous state at room temperature. The Curie and crystallization temperature were determined to be rc=708K and T= 803K, respectively. The Tx value was in good agreement with DSC measurement results. The occupied fraction of the nanocrystalline phases of cc-Fe(Si) and Fe2B at I'M situ optimum annealing temperature was about 57% and 43%, respectively. It is notable that the magnetization of the amorphous phase decreases more rapidly with increasing temperature than those of nanocrystalline ferromagnetism, suggesting the presence of the distribution of exchange interaction in the amorphous phase or high metalloid contents.

Original languageEnglish (US)
Pages (from-to)617-622
Number of pages6
JournalMaterials Research Society Symposium - Proceedings
StatePublished - 1999
Externally publishedYes
EventMRS Spring Meeting - Symposium H: Advanced Hard Magnets-Principles, Materials, and Processing - Symposium I: Amorphous and Nanocrystalline Materials for Hard and Soft Magnetic Applications - San Francisco, CA, United States
Duration: Apr 5 1999Apr 8 1999

ASJC Scopus subject areas

  • General Materials Science
  • Condensed Matter Physics
  • Mechanics of Materials
  • Mechanical Engineering


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