High magnetostriction at low fields of epoxy/Tb1-xPrx(Fe0.4Co0.6)1.9composites

J. J. Liu, D. K. Xiong, W. J. Ren, Z. D. Zhang, Siu Wing Or

Research output: Journal article publicationJournal articleAcademic researchpeer-review

14 Citations (Scopus)

Abstract

High Pr-content Tb1-xPrx(Fe0.4Co0.6)1.9magnetostrictive alloys (0.7 ≤ x ≤ 1.0) with a single cubic Laves phase have been synthesized by melt-spinning and subsequent annealing processes. The lattice parameter and the magnetization of the Tb1-xPrx(Fe0.4Co0.6)1.9Laves phase increase while the Curie temperature, the magnetocrystalline anisotropy, and the spontaneous magnetostriction coefficient λ1 1 1decrease with increasing Pr-content. The characteristic of the magnetostriction λa= λ{norm of matrix}- λ⊥of the epoxy/Tb1-xPrx(Fe0.4Co0.6)1.9composites can be well understood by the spontaneous magnetostriction λ1 1 1and the magnetocrystalline anisotropy of the Tb1-xPrx(Fe0.4Co0.6)1.9alloys. The epoxy/Pr(Fe0.4Co0.6)1.9composite free of high-cost Tb has a high magnetostriction of about 500 ppm at 6 kOe, suggesting that it would be a promising magnetostrictive composite material for low field application.
Original languageEnglish
Pages (from-to)271-274
Number of pages4
JournalJournal of Alloys and Compounds
Volume427
Issue number1-2
DOIs
Publication statusPublished - 16 Jan 2007

Keywords

  • Magnetic properties
  • Magnetostriction
  • Magnetostrictive composite material
  • Melt-spinning
  • MgCu -type structure 2

ASJC Scopus subject areas

  • Mechanics of Materials
  • Mechanical Engineering
  • Metals and Alloys
  • Materials Chemistry

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