Transformation to L10 structure in FePd nanoparticles synthesized by modified polyol process

Keita Watanabe, Hiroaki Kura, Tetsuya Sato

研究成果: Article査読

21 被引用数 (Scopus)

抄録

FePd nanoparticles were prepared by the modified polyol process, i.e. simultaneous reduction of palladium acetylacetonate and thermal decomposition of iron pentacarbonyl in a solvent. The well-dispersed FePd particles, with the average particle size of ∼8.4 nm, were obtained using diphenyl ether as a solvent. The structure of FePd nanoparticles transformed to L10 structure from face centered cubic (fcc) structure after annealing at 600 °C for 1 h in vacuum. The coercivity of the ordered FePd nanoparticles increased to ∼2 kOe at 5 K from ∼0.6 kOe in the fcc as-made FePd nanoparticle. On the other hand, FePd nanoparticles, synthesized based on the conventional modified polyol process using dioctyl ether as a solvent, showed no structural transformation after annealing up to 700 °C. This is explained in terms of the interruption of thermal diffusion of Fe and Pd atoms during the thermal treatment due to the mixture of interstitial carbon impurity in the synthesis process using dioctyl ether as a solvent.

本文言語English
ページ(範囲)145-149
ページ数5
ジャーナルScience and Technology of Advanced Materials
7
2
DOI
出版ステータスPublished - 2006 3月
外部発表はい

ASJC Scopus subject areas

  • 材料科学(全般)

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