The role of Pt complex on the synthesis of FePt by polyol process

S. Aizawa, K. Tohji, B. Jeyadevan

Research output: Chapter in Book/Report/Conference proceedingConference contribution


Target materials in this experiment were FePt alloy nanoparticles with face-centered tetragonal structure, narrow size distribution, and the size of 6-8 nm. This type of materials was expected to have high recording-density of 1Tbit/inch2 with high magnetic anisotropy. In this study, a detailed investigation was carried out to understand the reduction characteristics of Pt complexes, and FePt alloy nanoparticles with diameters larger than 6 nm was try to synthesize. For the synthesis of Pt nanoparticles by using polyol process, three kinds of Pt complexes, namely, H2PtCl6, Pt(EDTA), and Pt(acac)2 was used. The size of Pt metal nanoparticles was only few nm in the case of single Pt complex, while it was increased to 7-10 nm in the case of mixed Pt complex and adjusting the reaction temperature increasing ratio. FePt alloy nanoparticles with the diameter of 7-8 nm, distorted shape, and narrow size distribution were successfully synthesized. However, composition ratio of the particle was Fe12-21Pt79-88, nevertheless the ratio of a Fe:Pt in the original solution was 2:1.

Original languageEnglish
Title of host publicationWater Dynamics - 5th International Workshop on Water Dynamics
Number of pages4
Publication statusPublished - 2008 Mar 17
Event5th International Workshop on Water Dynamics - Sendai, Japan
Duration: 2007 Sep 252007 Sep 27

Publication series

NameAIP Conference Proceedings
ISSN (Print)0094-243X
ISSN (Electronic)1551-7616


Other5th International Workshop on Water Dynamics


  • Nanoparticle
  • Polyol process

ASJC Scopus subject areas

  • Physics and Astronomy(all)


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