Microstructure and magnetostriction of PrFe1.93Zr0.02nanocrystalline synthesized under high pressure

C. C. Hu, Y. G. Shi, Z. Y. Chen, D. N. Shi, Long-qing Chen, C. X. Kan

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Bulk nanocrystalline PrFe1.93Zr0.02alloys were synthesized by annealing its melt-spinning ribbons under different pressure. It was demonstrated that cubic Laves phase become the main phase only when the annealing pressure is up to 3 GPa. Both the average grain size and volume fraction of cubic Laves crystallin phase decrease with increasing pressure from 3 GPa to 8 GPa. Magnetic measurement results indicated that the saturation magnetization and the absolute value of the effective first anisotropy constant decrease with increasing pressure from 3 GPa to 8 Gpa. A large linear magnetostriction of 590 ppm at 3 kOe is observed in the PrFe1.93Zr0.02compound annealed under 6 GPa, which might make it potential material for magnetostrictive application. Based on our experimental results, a phenomenological approach was also proposed to theoretically demonstrate that the good magnetostrictive property of PrFe1.93Zr0.02bulk nanocrystalline synthesized under 6 GPa might be the consequence of the competition of anisotropy and the volume fraction of cubic Laves crystallin phase.

Original languageEnglish (US)
Pages (from-to)195-199
Number of pages5
JournalJournal of Alloys and Compounds
StatePublished - Jan 15 2015

All Science Journal Classification (ASJC) codes

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

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