Direct synthesis of fct-FePt nanoparticles by chemical route

Balachandran Jeyadevan, Kiyoshi Urakawa, Akira Hobo, Nallasamy Chinnasamy, Kozo Shinoda, Kazuyuki Tohji, David D.Julianto Djayaprawira, Masakiyo Tsunoda, Migaku Takahashi

Research output: Contribution to journalLetterpeer-review

118 Citations (Scopus)

Abstract

Direct synthesis of fct-FePt nanoparticles was achieved by reducing platinum and iron acetylacetonates in tetraethylene glycol (TEG) at 300°C. The particle diameter was between 5 and 10 nm. The X-ray diffraction profile of the as-prepared FePt particles exhibited the superlattice reflections (001) and (110), which signified the tetragonality. The Hk of 31 kOe measured at room temperature (RT) from hysteresis loss analysis confirmed the presence of FePt particles with fractionally ordered fct structure which posses substantially high anisotropy. However, the RT coercivity was only 370 Oe due to strong magnetostatic interaction of the particles.

Original languageEnglish
Pages (from-to)L350-L352
JournalJapanese Journal of Applied Physics, Part 2: Letters
Volume42
Issue number4 A
Publication statusPublished - 2003 Apr 1

Keywords

  • Coercive field
  • Direct synthesis
  • Fct-FePt
  • FePt
  • Hysteresis loss analysis
  • L1 phase
  • Nanoparticles
  • Polyol process
  • Super lattice reflections

ASJC Scopus subject areas

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

Fingerprint

Dive into the research topics of 'Direct synthesis of fct-FePt nanoparticles by chemical route'. Together they form a unique fingerprint.

Cite this