Effect of grain growth inhibitors on the hysteresis properties of Nd10Fe82C6B2 alloys

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

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Abstract

In our previous work (IEEE Trans. Mag. vol.36, p.3315, (2000)), we studied the effect of carbon on the formation and magnetic properties of nanocomposite Nd2Fe14(C,B)/α-Fe magnets. In the Nd10Fe82B8-xCx (x=0,2,4,5, 6,7) as-spun ribbons for x=0-4 have a majority 2:14:1 phase with some α-Fe, whereas, for larger x the mixture of 2:14:1 phase and α-Fe is obtained only at certain wheel speeds range. Beyond this range, the 2:17 phase and a significant amount of α-Fe were obtained instead, which transform into the tetragonal 2:14:1 phase after annealing. Magnetic measurements showed a slight enhancement of the coercivity (8.7 kOe) for x=2 and then a decrease for larger x. The drop of the coercivity with carbon content can be related to the change in the crystallization behavior and the coarsening of the microstructure. In this work, we study the effect of small substitutions (i.e. Zr, Nb, Cr, Ga, etc.) for iron, in melt-spun Nd10Fe82-xMxB2C6 in order to optimize their microstructure and therefore their magnetic hysteresis properties.

Original languageEnglish (US)
Title of host publicationINTERMAG Europe 2002 - IEEE International Magnetics Conference
EditorsJ. Fidler, B. Hillebrands, C. Ross, D. Weller, L. Folks, E. Hill, M. Vazquez Villalabeitia, J. A. Bain, Jo De Boeck, R. Wood
PublisherInstitute of Electrical and Electronics Engineers Inc.
ISBN (Electronic)0780373650, 9780780373655
DOIs
StatePublished - 2002
Event2002 IEEE International Magnetics Conference, INTERMAG Europe 2002 - Amsterdam, Netherlands
Duration: Apr 28 2002May 2 2002

Publication series

NameINTERMAG Europe 2002 - IEEE International Magnetics Conference

Other

Other2002 IEEE International Magnetics Conference, INTERMAG Europe 2002
CountryNetherlands
CityAmsterdam
Period4/28/025/2/02

ASJC Scopus subject areas

  • Electronic, Optical and Magnetic Materials
  • Electrical and Electronic Engineering
  • Surfaces, Coatings and Films

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