Effects of annealing time on structural and magnetic properties of L10-FePt nanoparticles synthesized by the SiO2-nanoreactor method

JOURNAL OF MAGNETISM AND MAGNETIC MATERIALS

卷:310

Article

Tamada, Y. ; Morimoto, Y. ; Yamamoto, S. ; Takano, M. ; Nasu, S. ; Ono, T.

关键词: nano-particle;    nano-crystalline material;    nano-scale ferromagnet;    Fe pt alloy cluster;   

DOI  :  10.1016/j.jmmm.2006.10.739

来源: Elsevier

【 摘 要 】

We investigated effects of annealing time on structural and magnetic properties of the L1(0)- FePt nanoparticles synthesized by the `` SiO2- nanoreacter'' method. The magnetization and powder X- ray diffraction ( XRD) studies revealed that the annealing at 900 degrees C for 9 h could convert all of the FCC- nanoparticles to the well- crystallized L1(0) structure with a large coercivity while keeping their particle size. Such monodisperse and highly crystalline L10- FePt nanoparticles are a promising material for the realization of ultra- high density recording. (c) 2006 Elsevier B. V. All rights reserved.

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