Challenge to the synthesis of α"-Fe16N2 compound nanoparticle with high saturation magnetization for rare earth free new permanent magnetic material

Tomoyuki Ogawa, Yasunobu Ogata, Ruwan Gallage, Naoya Kobayashi, Naoaki Hayashi, Yoshihiro Kusano, Shinpei Yamamoto, Kaori Kohara, Masaaki Doi, Mikio Takano, Migaku Takahashi

Research output: Contribution to journalArticlepeer-review

72 Citations (Scopus)

Abstract

Single-phase α"-Fe16N2 nanoparticles have been synthesized with high reproducibility in gram amounts for the first time. The nanoparticles were obtained through the various kinds of successive procedure starting from the reduction of Fe-oxides, followed by nitriding in an atmosphere with very low moisture and oxygen contents of less than 1 ppm through the entire process. The single-phase α"-Fe16N2 nanoparticles exhibited saturation magnetization (Ms) of 234 emu/g at 5 K and a magnetocrystalline anisotropy constant (Ku) of 9:6 - 106 erg/cm3. These magnetic properties of α"-Fe16N2 nanoparticles suggest that a new path for a possible candidate of the rare-earth-free permanent magnet material with a high Ms.

Original languageEnglish
Article number073007
JournalApplied Physics Express
Volume6
Issue number7
DOIs
Publication statusPublished - 2013 Jul 1

ASJC Scopus subject areas

  • Engineering(all)
  • Physics and Astronomy(all)

Fingerprint Dive into the research topics of 'Challenge to the synthesis of α"-Fe<sub>16</sub>N<sub>2</sub> compound nanoparticle with high saturation magnetization for rare earth free new permanent magnetic material'. Together they form a unique fingerprint.

Cite this