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

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...

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Published in:Journal of applied physics 1998-02, Vol.83 (4), p.1983-1987
Main Authors: Yang, Jinbo, Mao, Weihua, Yang, Yingchang, Ge, Senlin, Zhao, Zhenjie, Li, Fashen
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Language:English
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cited_by cdi_FETCH-LOGICAL-c140t-ed1602cedb05fb997ddf026026408b74e5d445db07cb484e4494a098b16645373
cites cdi_FETCH-LOGICAL-c140t-ed1602cedb05fb997ddf026026408b74e5d445db07cb484e4494a098b16645373
container_end_page 1987
container_issue 4
container_start_page 1983
container_title Journal of applied physics
container_volume 83
creator Yang, Jinbo
Mao, Weihua
Yang, Yingchang
Ge, Senlin
Zhao, Zhenjie
Li, Fashen
description 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.
doi_str_mv 10.1063/1.366926
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title Nitrogenation of the magnetic compound R(Fe,M)12
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