Facile Nanotube-Assisted Synthesis of Ternary Intermetallic Nanocrystals of the Ferromagnetic Heusler Phase Co2FeGa

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• 作者：Markus Gellesch ; Maria Dimitrakopoulou ; Maik Scholz ; Christian G.F. Blum ; Michael Schulze ; Jeroen van den Brink ; Silke Hampel ; Sabine Wurmehl ; Bernd B眉chner
• 刊名：Crystal Growth & Design
• 出版年：2013
• 出版时间：July 3, 2013
• 年：2013
• 卷：13
• 期：7
• 页码：2707-2710
• 全文大小：329K
• 年卷期：v.13,no.7(July 3, 2013)
• ISSN：1528-7505

文摘

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 functionalities arising from downscaling a bulk material, we observe an enhancement of the coercive field of the Co₂FeGa nanocrystals by a factor of 鈮?0. Our work can facilitate the exploration and eventually the tuning of physical properties of ternary and other intermetallic compounds at the nanoscale.