Preparation of monodisperse and highly coercive L10-FePt nanoparticles dispersible in nonpolar organic solvents

Shinpei Yamamoto*, Yasumasa Morimoto, Yoshinori Tamada, Y. K. Takahashi, K. Hono, Teruo Ono, Mikio Takano

*この研究の対応する著者

研究成果: Article査読

37 被引用数 (Scopus)

抄録

A method to prepare monodisperse and highly coercive L10-FePt nanoparticles that are dispersible in nonpolar organic solvents such as toluene, chloroform, and hexane was developed. By vigorously stirring the SiO 2-coated L10-FePt nanoparticles synthesized by the "SiO2-nanoreactor" method (Appl. Phys. Lett. 2005, 87, 032503) in a mixture of an aqueous NaOH solution, chloroform, and hexadecyltrimethlyammonium bromide, the SiO2 coating was dissolved off, and bare FePt nanoparticles could be extracted to the chloroform phase without degrading their magnetic properties. These particles showed a tendency to form a close-packed lattice on slow drying of the chloroform-based solution. The present success may promote the practical application to ultra-high-density magnetic recording and also may open the door to providing these particles with new physical and/or chemical functions.

本文言語English
ページ(範囲)5385-5388
ページ数4
ジャーナルChemistry of Materials
18
22
DOI
出版ステータスPublished - 2006 10 31
外部発表はい

ASJC Scopus subject areas

  • 化学 (全般)
  • 化学工学(全般)
  • 材料化学

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