Size-dependent properties of single domain Fe2CoGa nanoparticles prepared by a facile template-less chemical route

Single phase X type Fe2CoGa Heusler alloy nanoparticles with average crystallite sizes of 56 nm, 26 nm, and 21 nm have been synthesized using a refined template-less chemical route. Size-dependent structural and magnetic properties of the Fe2CoGa alloy nanoparticles are compared with the bulk counterpart prepared by arc melting. Fe2CoGa nanoparticles show soft ferromagnetic behavior with high magnetic moment and Curie temperature. Ab initio calculations have been carried out to interpret the experimental results. The estimated critical size and measured magnetic properties of the nanoparticles reveal that the synthesized nanoparticles are in a single domain superparamagnetic regime.

Automated summary

In this study, single phase X type Fe2CoGa Heusler alloy nanoparticles were successfully synthesized, and their size-dependent structural and magnetic properties were investigated. The experimental results show that Fe2CoGa nanoparticles exhibit high magnetic moment and Curie temperature, and are in a single domain superparamagnetic regime.