Magnetic field-induced nitridation of Sm2Fe17

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

Research output: Contribution to journalArticle

Abstract

Nitridation of Sm2Fe17 powder was performed under a 5-T magnetic field for the temperature range 623–743 K to clarify the magnetic field effect on nitridation. Applying a magnetic field of 5 T promoted nitridation by approximately 0.6 nitrogen atoms per formula unit compared with zero-field nitrogenation, and almost fully-nitride Sm2Fe17N2.9 was obtained at 743 K. The magnetic field effect was discussed using a grain growth model based on magnetic properties of nitride-poor Sm2Fe17Nx (x < 3) phase and fully-nitride Sm2Fe17N3 phase. The obtained results show that in-field nitridation helps to synthesize nitride Sm2Fe17N3 system in the present condition.

Original languageEnglish
Article number155193
JournalJournal of Alloys and Compounds
Volume835
DOIs
Publication statusPublished - 2020 Sep 15

Keywords

  • Gas-solid reactions
  • High magnetic fields
  • Magnetic measurements
  • Nitride materials
  • Permanent magnets

ASJC Scopus subject areas

  • Mechanics of Materials
  • Mechanical Engineering
  • Metals and Alloys
  • Materials Chemistry

Fingerprint Dive into the research topics of 'Magnetic field-induced nitridation of Sm<sub>2</sub>Fe<sub>17</sub>'. Together they form a unique fingerprint.

  • Cite this