The recent interest in cluster science stems from the main observation that the magnetic properties of finely divided powders are very different from the macroscopic well-known properties of the bulk [1]. However, the magnetic properties of mixed transition metal clusters have not yet received similar attention because of the lack of high-quality sample. The new technique by using inductively coupled plasma reactor equipped with the liquid nitrogen cooling system has been used to synthesize metallic CuNi nanoparticles. This method significantly reduces the oxidization of the metallic particles over the other conventional techniques.
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