Dual magnetic phases in Nd-based bulk metallic glass

Y. Hu, Kang Cheung Chan, L. Liu, Y. Z. Yang

Research output: Journal article publicationJournal articleAcademic researchpeer-review

2 Citations (Scopus)

Abstract

Numerous nanocrystals dispersed homogenously in an amorphous matrix were observed in the die-cast cylindrical Nd55Fe28Al9Ni8bulk metallic glass. Most of the nanocrystals are less than 5 nm in size. At room temperature, only one magnetically hard phase was observed. But below room temperature, another magnetically hard phase was also detected. The appearance of the phases was associated with the different exchange coupling effect of the nanocrystalline grains and the amorphous matrix, and the coercivity of the alloy was related to the size of the nanocrystals. It was shown that nanocrytals with a size larger than 1.3 nm might contribute to a larger coercivity of the alloy.
Original languageEnglish
Pages (from-to)4012-4014
Number of pages3
JournalMaterials Letters
Volume62
Issue number24
DOIs
Publication statusPublished - 15 Sep 2008

Keywords

  • Bulk metallic glass
  • Exchange coupling effect
  • Magnetic materials
  • Microstructure
  • Nanocrystal

ASJC Scopus subject areas

  • Materials Science(all)
  • Condensed Matter Physics
  • Mechanics of Materials
  • Mechanical Engineering

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