Effect of carbon substitution on the magnetic properties of Nd-Fe-(B,C) nanocomposite magnets

M. Daniil, H. Okumura, G. C. Hadjipanayis, David J Sellmyer

Research output: Contribution to journalArticle

11 Citations (Scopus)

Abstract

The purpose of the present work is to study the effect of carbon substitution for boron on the magnetic and structural properties in nanocomposite Nd10Fe82B8-xCx, (x = 0, 2, 4, 5, 6, 7) ribbons in correlation with their crystallization behavior. Four different structural states were observed in as-spun ribbons depending on the carbon content x and the wheel speed: (i) Nd2Fe 14(B,C)+α-Fe, (ii) Nd2Fe14(B,C)+Nd 2Fe17Cx+α-Fe, (iii) Nd2Fe 17Cx+α-Fe and (iv) amorphous. In annealed ribbons, the 2:17:Cx phase transforms into the 2:14:1, whereas the amount of α-Fe phase increases with x. The coercivity has a maximum of 8.7kOe for x=2, followed by a gradual decrease with further increase of carbon concentration. The deterioration of the magnetic properties with x can be associated with the change in the crystallization behavior and the coarsening of the microstructure for x>4.

Original languageEnglish (US)
Pages (from-to)316-324
Number of pages9
JournalJournal of Magnetism and Magnetic Materials
Volume267
Issue number3
DOIs
StatePublished - Dec 1 2003

Fingerprint

ribbons
Magnets
Magnetic properties
Nanocomposites
nanocomposites
Substitution reactions
magnets
Carbon
substitutes
Crystallization
magnetic properties
carbon
crystallization
Boron
Coarsening
wheels
Coercive force
deterioration
coercivity
Deterioration

Keywords

  • Melt-spinning
  • Nanocomposite magnets
  • NdFeC magnets
  • Ribbons

ASJC Scopus subject areas

  • Electronic, Optical and Magnetic Materials
  • Condensed Matter Physics

Cite this

Effect of carbon substitution on the magnetic properties of Nd-Fe-(B,C) nanocomposite magnets. / Daniil, M.; Okumura, H.; Hadjipanayis, G. C.; Sellmyer, David J.

In: Journal of Magnetism and Magnetic Materials, Vol. 267, No. 3, 01.12.2003, p. 316-324.

Research output: Contribution to journalArticle

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