J Mater Sci Technol ›› 2000, Vol. 16 ›› Issue (03): 261-268.

• Research Articles •     Next Articles

Syntheses, crystallographic and magnetic properties of Nd3Fe29-xCrx and other associated compounds

Xiufeng HAN, Terunobu Miyazaki, Qiyuan WANG, Jun WANG, Yude ZAN, Lanying LIN   

  1. Department of Applied Physics, Faculty of Engineering, Tohoku University, Sendai 980-77, Japan...
  • Received:1999-06-30 Revised:1999-09-05 Online:2000-05-28 Published:2009-10-10
  • Contact: Xiufeng HAN

Abstract: A systematic study of syntheses and magnetic properties of the Nd-3 Fe29-xCrx (x=4.5, 4.7, 5.0, and 5.5) compounds has been performed. The single-phase compounds of Nd3Fe29-xCrx can be formed in the range 4.5 less than or equal to x less than or equal to 5.5. The Curie temperature Tc, the saturation magnetization M-S at 4.2 K, the anisotropy field H-A at 4.2 K and room temperature, and the intra-sublattice exchange coupling parameter j(FeFe) at 4.2 K for the Nd3Fe29-xCrx compounds decrease with increasing Cr composition from x=4.5 to 5.5, respectively. Nitrogenation and carbonation, unlike hydrogenation, result mainly in improvements of the Curie temperature, the saturation magnetization and the anisotropy field at 4.2 K and room temperature for the Nd3Fe29-xCrx compounds compared with their parent compounds.

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