Facile Nanotube-Assisted Synthesis of Ternary Intermetallic Nanocrystals of the Ferromagnetic Heusler Phase Co2FeGa
Facile Nanotube-Assisted Synthesis of Ternary Intermetallic Nanocrystals of the Ferromagnetic Heusler Phase Co2FeGa
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DOI：
10.1021/cg400405k
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发表时间：
2013-07-01
影响因子：
3.8
通讯作者：
Buechner, Bernd
中科院分区：
文献类型：
--
作者：
Gellesch, Markus;Dimitrakopoulou, Maria;Buechner, Bernd
一个简单的合成方法，用于合成三元金属间化合物纳米晶体的赫斯勒化合物Co2FeGa示范性地证明。该方法涉及预制的多壁碳纳米管，其充当模板和保护壳，导致形成主要为球形的、化学稳定的和结晶的纳米颗粒，其具有明确的直径分布。作为一个例子，对于新的functionalities所产生的降尺度的散装材料，我们观察到的Co2FeGa纳米晶体的矫顽场的一个因子r的增强近似30。我们的工作可以促进探索，并最终在纳米级的三元和其他金属间化合物的物理性质的调整。
A facile synthesis approach for the synthesis of ternary intermetallic nanocrystals was demonstrated exemplarily with the Heusler compound Co2FeGa. The method, involving prefabricated multiwalled carbon nanotubes which act as a template and protective shell, results in the formation of mainly spherical, chemically stable, and crystalline nanoparticles with a well-defined diameter distribution. As an example, for novel fiinctionalities arising from downscaling a bulk material, we observe an enhancement of the coercive field of the Co2FeGa nanociystals by a factor of r approximate to 30. Our work can facilitate the exploration and eventually the tuning of physical properties of ternary and other intermetallic compounds at the nanoscale.