Nanocomposite (Nd,Dy)(Fe,Co,Nb,B)5.5/α-Fe multilayer magnets with high performance

W. Liu, Z. D. Zhang, J. P. Liu, Z. R. Dai, Z. L. Wang, X. K. Sun, D. J. Sellmyer

Research output: Contribution to journalArticle

16 Citations (Scopus)

Abstract

The structural and magnetic properties of rare-earth nanocomposite magnets of a (Nd,Dy)(Fe,Co,Nb,B)5.5 single layer and a (Nd,Dy)(Fe,Co,Nb,B)5.5/α-Fe multilayer prepared by sputtering and heat treatment have been investigated. Incomplete exchange coupling behaviour is observed in the Ti-buffered NdDyFeCoNbB + 40 wt%Fe single layer magnet. After annealing, the laminated nanostructure consisting of mutually dispersed soft and hard phases results in remanence enhancement. The optimum magnetic properties of Jr = 1.11 T, μ0iHc = 0.88 T and (BH)max = 192 kJm-3 are achieved in the multilayer magnet annealed at 550°C for 30 min. The designed multilayer film with thinner soft magnetic layers may favour the formation of more ideal nanostructures for exchange coupling between soft- and hard-magnetic phases.

Original languageEnglish (US)
Pages (from-to)L63-L66
JournalJournal of Physics D: Applied Physics
Volume36
Issue number17
DOIs
StatePublished - Sep 7 2003

Fingerprint

Magnets
Nanocomposites
nanocomposites
Exchange coupling
Multilayers
magnets
Nanostructures
Magnetic properties
magnetic properties
Remanence
Multilayer films
remanence
Rare earths
Sputtering
Structural properties
heat treatment
rare earth elements
sputtering
Heat treatment
Annealing

ASJC Scopus subject areas

  • Electronic, Optical and Magnetic Materials
  • Condensed Matter Physics
  • Acoustics and Ultrasonics
  • Surfaces, Coatings and Films

Cite this

Nanocomposite (Nd,Dy)(Fe,Co,Nb,B)5.5/α-Fe multilayer magnets with high performance. / Liu, W.; Zhang, Z. D.; Liu, J. P.; Dai, Z. R.; Wang, Z. L.; Sun, X. K.; Sellmyer, D. J.

In: Journal of Physics D: Applied Physics, Vol. 36, No. 17, 07.09.2003, p. L63-L66.

Research output: Contribution to journalArticle

Liu, W. ; Zhang, Z. D. ; Liu, J. P. ; Dai, Z. R. ; Wang, Z. L. ; Sun, X. K. ; Sellmyer, D. J. / Nanocomposite (Nd,Dy)(Fe,Co,Nb,B)5.5/α-Fe multilayer magnets with high performance. In: Journal of Physics D: Applied Physics. 2003 ; Vol. 36, No. 17. pp. L63-L66.
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