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

Journal of Alloys and Compounds 619 (2015) 195–199 Contents lists available at ScienceDirect Journal of Alloys and Compounds journal homepage: www.else /locate/jalcom Microstructure and magnetostriction of PrFe1.93Zr0.02 nanocrystalline synthesized under high pressure C.C. Hu a, Y.G. Shi a,⇑, Z.Y. Chen a, D.N. Shi a, L.Q. Chen b, C.X. Kan a a Department of Applied Physics, Nanjing University of Aeronautics and Astronautics, Nanjing 210016, China b Department of Materials Science and Engineering, The Pennsylvania State University, University Park, PA 16802, USA a r t i c l e i n f o a b s t r a c t Article history: Bulk nanocrystalline PrFe1.93Zr0.02 alloys were synthesized by annealing its melt-spinning ribbons under Received 26 July 2014 different pressure. It was demonstrated that cubic Laves phase become the main phase only when the Received in revised form 2 September 2014 annealing pressure is up to 3 GPa. Both the average grain size and volume fraction of cubic Laves crystal- Accepted 2 September 2014 lin phase decrease with increasing pressure from 3 GPa to 8 GPa. Magnetic measurement results indi- Available online 16 September 2014 cated 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 Keywords: 590 ppm at 3 kO