Synthesis of Sm-Co and Sm-Co/Fe nanocrystals by reductive annealing of nanoparticles

被引：55

作者：

Chaubey, Girija S. ^{[1
]}

Poudyal, Narayan ^{[1
]}

Liu, Yuzi ^{[1
]}

Rong, Chuanbing ^{[1
]}

Liu, J. Ping ^{[1
]}

机构：

[1] Univ Texas Arlington, Dept Phys, Arlington, TX 76019 USA

来源：

JOURNAL OF ALLOYS AND COMPOUNDS | 2011年 / 509卷 / 05期

关键词：

Nanoparticle; Annealing; Nanocomposite; Magnetic properties; MAGNETIC-PROPERTIES; FABRICATION;

D O I：

10.1016/j.jallcom.2010.10.164

中图分类号：

O64 [物理化学（理论化学）、化学物理学];

学科分类号：

070304 ; 081704 ;

摘要：

We report here a simple route for the chemical synthesis of SmCo5 and Sm2Co17 single-phase and SmCo5/Fe composite nanocrystals by polyol reduction of metal precursors and subsequent calcium reductive annealing. Sm2O3 and Co nanoparticles were synthesized first, and nanocrystalline SmCo5 or Sm2Co17, compound with tunable composition was then obtained after the annealing. The composition of the compound was controlled by varying the initial molar ratio of the metal precursors. At room temperature, the obtained SmCo5 and Sm2Co17 show coercivity of 12 kOe and 4 kOe, and saturation magnetization of 70 emu/g and 85 emu/g, respectively. To prepare SmCo5/Fe nanocomposites, Fe, Co and Sm2O3 nanoparticles were synthesized in one-pot by polyol reduction of the metal precursors. (C) 2010 Published by Elsevier B.V.

引用

页码：2132 / 2136

页数：5

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