Preparation of composite magnetic nanoparticles by Arc plasma deposition

Masashi Matsuura, Takuya Igarashi, Tetsuro Yamamoto, Nobuki Tezuka, Satoshi Sugimoto

Research output: Contribution to journalArticlepeer-review

Abstract

In this study, magnetic nanoparticles were prepared by the arc plasma deposition (APD). The monodisperse Fe-Pt nanoparticles (5~10 nm) were obtained on the surface of SiO2 nanoparticles. Deposition voltage and shot counts can control particle size of Fe-Pt. The coercivity of Fe-Pt/SiO2 composite particles increased after annealing at 300°C, and the maximum coercivity value reached to 583 kA·m-1. In the selected area diffraction pattern obtained by transmission electron microscopy (TEM), amount of the order L10 phase was increased by annealing at 300°C. The Mn-Bi nanoparticles (5~20 nm) were also prepared by APD. The Mn-Bi was deposited on Fe nanoparticles, which were prepared by hydrogen-plasma-meta-reaction (HPMR) method, and monodisperse Mn-Bi particles were obtained on the Fe nanoparticles. Consequently, the arc plasma deposition is effective process to prepare composite magnetic nanoparticles.

Original languageEnglish
Pages (from-to)364-371
Number of pages8
JournalFuntai Oyobi Fummatsu Yakin/Journal of the Japan Society of Powder and Powder Metallurgy
Volume64
Issue number7
DOIs
Publication statusPublished - 2017 Jul

Keywords

  • Arc plasma deposition
  • Composite particles
  • Magnetic nanoparticles
  • Mn-Bi and fe-pt alloy

ASJC Scopus subject areas

  • Mechanical Engineering
  • Industrial and Manufacturing Engineering
  • Metals and Alloys
  • Materials Chemistry

Fingerprint Dive into the research topics of 'Preparation of composite magnetic nanoparticles by Arc plasma deposition'. Together they form a unique fingerprint.

Cite this