Magnetic Field Effect on Nitrogenation of Sm2Fe17

Keiichi Koyama; Masahira Onoue; Ryota Kobayashi; Yoshifuru Mitsui; Rie Y. Umetsu; Yoshiya Uwatoko

doi:10.2320/matertrans.MT-MN2019012

This article has now been updated. Please use the final version.

Magnetic Field Effect on Nitrogenation of Sm₂Fe₁₇

Keiichi Koyama, Masahira Onoue, Ryota Kobayashi, Yoshifuru Mitsui, Rie Y. Umetsu, Yoshiya Uwatoko

Author information

Keywords: magnetic field effect, nitrogenation, gas-solid reaction, Sm₂Fe₁₇N₃

JOURNAL FREE ACCESS Advance online publication

Article ID: MT-MN2019012

DOI https://doi.org/10.2320/matertrans.MT-MN2019012

The final version of this article is now available: Vol. 61 (2020), No. 8 pp. 1487-1491

Details

Abstract

Nitrogenation of Sm₂Fe₁₇ powder was performed under a zero field and a magnetic field of 5 T at 623, 673 and 743 K to clarify the magnetic field effect on nitrogenation. Applying a magnetic field of 5 T induced nitrogenation compared with zero-field nitrogenation, and almost fully nitride Sm₂Fe₁₇N_2.9 was obtained at 743 K. Mössbauer spectroscopy results suggested that a 5-T magnetic field promoted the phase transformation to the fully-nitride Sm₂Fe₁₇N₃ phase. The magnetic field effect was discussed based on the magnetic energy gain and magnetic properties of host Sm₂Fe₁₇ and fully nitride Sm₂Fe₁₇N₃.

Saturation moment for zero-field nitrogenation (ZFN) and 5T-in-field nitrogenation (IFN-5T) samples and Sm₂Fe₁₇ at 10 K. Fullsize Image

Corresponding author

Register with J-STAGE for free!