Nitrogenation of the magnetic compound R(Fe,M)12

Jinbo Yang, Weihua Mao, Yingchang Yang, Senlin Ge, Zhenjie Zhao, Fashen Li

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6 Scopus citations

Abstract

The diffusion mechanism of nitrogen atoms in ThMn12-type crystal structure compounds was investigated by using x-ray diffraction, Mössbauer spectroscopy measurements, thermopiezic analysis, and differential thermal analysis. The studies indicate that the distribution of nitrogen atoms in a R(Fe,M)12 particles with intermediate N content is characterized by a nitrided region and an unnitrided region. The results confirmed that this two-phase region is stable, and the nitrogen atoms do not diffuse further into the particle. Based on the characteristics of the nitrogenation, a trapping diffusion model is applied to the R(Fe,M)12 system. On the basis of this study high performance magnetic powders of NdFe10.5Mo1.5NX were successfully prepared.

Original languageEnglish (US)
Pages (from-to)1983-1987
Number of pages5
JournalJournal of Applied Physics
Volume83
Issue number4
DOIs
StatePublished - Feb 15 1998

ASJC Scopus subject areas

  • Physics and Astronomy(all)

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    Yang, J., Mao, W., Yang, Y., Ge, S., Zhao, Z., & Li, F. (1998). Nitrogenation of the magnetic compound R(Fe,M)12. Journal of Applied Physics, 83(4), 1983-1987. https://doi.org/10.1063/1.366926