Prepared and Study of Low Cost and High Performance Nanocomposite (Nd,Dy,Pr)-(Fe,Nb,Zr)-B/α-Fe

Abstract:

The microstructure and magnetic properties of melt-spun nanocomposite (Nd, Dy, Pr)-(Fe,Nb,Zr)-B /α-Fe ribbons have been investigated by XRD, SPM and VSM. The ribbons were prepared at a wheel speed range of 10-30 m/s. The multigrain domain or interaction domain was observed in the samples prepared at 20 m/s wheel speed. The easy magnetized direction c-axis parallel to the ribbon plane for the sample prepared at the wheel speed of 20m/s. The average gain size in this sample is about 18nm and the sample consists of hard magnetic phase (Nd, Dy, Pr) ₂(Fe,Nb,Zr)14B and sofe magnetic phase α-Fe, there is strong exchange-coupling interaction between them. The magnetic properties obtained are B_r=1.28T，H_ci= 504.2kA•m^-1，(BH)_max= 157.8 kJ•m^-3，M_r/M_s =0.76.

• Periodical: Advanced Materials Research (Volume 647)
• Pages: 777-782
• DOI: https://doi.org/10.4028/www.scientific.net/AMR.647.777
• Online since: January 2013
• Authors: Jin Jiang Hu, Chen Pu Li, Chao Liu
• Keywords: Anisotropic Property, Exchange-Coupling Interaction, Magnetic Domain, Melt-Spun, Nanocomposite Permanent Material

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