Nd2Fe14B/Fe3B nanocomposite film fabricated by aerosol deposition method

S. Sugimoto, M. Nakamura, T. Maki, T. Kagotani, K. Inomata, J. Akedo, S. Hirosawa, Y. Shigemoto

Research output: Contribution to journalConference articlepeer-review

9 Citations (Scopus)

Abstract

This paper describes magnetic properties of the Fe3B/Nd 2Fe14B nanocomposite films prepared by aerosol deposition (AD) method. The composition of host powder was Nd4.5Fe 73Co2Cr2B18.5, which was produced by the combination of strip casting and jet milling. The powder showed the remanence (Br) of 82.7 emu/g and the coercivity (HcJ) of 4.4 kOe. From the hysteresis loop and XRD pattern, the powder was considered as a nanocomposite powder consisted of Fe3B and Nd2Fe 14B phases. The particle size analysis revealed that the average powder size was around 12.45 μm. This powder size was larger than that of Sm-Fe-N powder used for the preparation of AD films in our previous papers, which influenced the deposition rate and film thickness. The as-deposited AD film exhibited high remanence (Br = 85.1 emu/g) but low coercivity (HcJ = 0.84 kOe), though the film consisted of the Fe3B and Nd2Fe14B phases. In addition, the coercivity further decreased to 0.28-0.73 kOe by the annealing at 450-700 °C for 1-6 min in Ar. These low coercivities were considered to be related to the relatively low anisotropy field of Nd2Fe14B phase, the defects induced during the AD method and the presence of α-Fe phase.

Original languageEnglish
Pages (from-to)1413-1416
Number of pages4
JournalJournal of Alloys and Compounds
Volume408-412
DOIs
Publication statusPublished - 2006 Feb 9
EventProceedings of the Rare Earths'04 in Nara, Japan -
Duration: 2004 Nov 72004 Nov 12

Keywords

  • Aerosol deposition
  • Coercivity
  • Iron-boron
  • Nanocomposite
  • Neodymium-iron-boron
  • Remanence

ASJC Scopus subject areas

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

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