Direct Synthesis of fct-FePt Nanoparticles by Chemical Route

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概要

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• 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 $H_{\text{k}}$ 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.

• 2003-04-01

著者

• Tsunoda Masakiyo

  Department Of Electronic Engineering Graduate School Of Engineering Tohoku University

• Jeyadevan Balachandran

  Department Of Geoscience And Technology Tohoku University

• Tohji Kazuyuki

  Department Of Chemistry Faculty Of Science Gakushuin University

• Djayaprawira David

  Department Of Electronic Engineering Tohoku University

• Hobo Akira

  Department Of Geoscience And Technology Tohoku University

• Urakawa Kiyoshi

  Department Of Geoscience And Technology Tohoku University

• Chinnasamy Nallasamy

  Department Of Geoscience And Technology Tohoku University

• Shinoda Kozo

  Department Of Geoscience And Technology Tohoku University

• Takahashi Migaku

  Department Of Electronic Engineering Graduate School Of Engineering Tohoku University

• Chinnasamy Nallasamy

  Department of Geoscience and Technology, Tohoku University, Aoba-ku, Sendai 980-8579, Japan

• Urakawa Kiyoshi

  Department of Geoscience and Technology, Tohoku University, Aoba-ku, Sendai 980-8579, Japan

• Djayaprawira David

  Department of Electronic Engineering, Tohoku University, Aoba-ku, Sendai 980-8579, Japan

• Shinoda Kozo

  Department of Chemistry Faculty of Engineering Yokohama National University

• Shinoda Kozo

  Department of Geoscience and Technology, Tohoku University, Aoba-ku, Sendai 980-8579, Japan

• Takahashi Migaku

  Department of Electronic Engineering, Tohoku University, Aoba-ku, Sendai 980-8579, Japan

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