Novel Nd2Fe14B nanoflakes and nanoparticles for the development of high energy nanocomposite magnets

Nilay G. Akdogan, George C. Hadjipanayis, David J. Sellmyer

Research output: Contribution to journalArticlepeer-review

53 Scopus citations

Abstract

High energy ball milling has been shown to be a promising method for large-scale fabrication of rare earth-transition metal nanoparticles. In this work, magnetically hard Nd-Fe-B nanopowders with a coercivity in the range of 1.2-4kOe have been produced by surfactant-assisted ball milling of nanocrystalline precursor alloys. The nanopowders consisted of Nd 2Fe14B flakes with a thickness below 100nm and an aspect ratio as high as 102-103 and anisotropic square nanoparticles with a size of 11nm. Both the nanoparticles and nanoflakes showed a strong [001] out-of-plane texture. The nanoparticles showed a spin reorientation temperature which is lower (117K) than the bulk value (135K). The successful fabrication of Nd-Fe-B nano-thin flakes and anisotropic nanoparticles provides hope for the development of nanocomposite permanent magnets with an enhanced energy product.

Original languageEnglish (US)
Article number295705
JournalNanotechnology
Volume21
Issue number29
DOIs
StatePublished - 2010

ASJC Scopus subject areas

  • Bioengineering
  • Chemistry(all)
  • Materials Science(all)
  • Mechanics of Materials
  • Mechanical Engineering
  • Electrical and Electronic Engineering

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