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Funct. Mater. 2019; 26 (3): 489-494.

doi:https://doi.org/10.15407/fm26.03.489

Properties of Cu/Cu2O core-shell nanoparticles produced by spark erosion

A.V.Gilchuk1, A.O.Perekos2, Yu.Yu.Bacherikov3, A.G.Zhuk3, I.P.Vorona3, V.R.Romanyuk3, Yu.M.Romanenko1

1National Technical University of Ukraine "I.Sikorsky Kyiv Polytechnic Institute", 37 Prosp. Peremogy, 03506 Kyiv, Ukraine
2G.Kurdyumov Institute for Metal Physics, National Academy of Sciences of Ukraine, 36 Academician Vernadsky Blvd, 03142 Kyiv, Ukraine
3V.Lashkaryov Institute of Semiconductor Physics, National Academy of Sciences of Ukraine, 41 Prosp. Nauky, 03028 Kyiv, Ukraine

Abstract: 

A simple and cheap spark erosion method was used to produce Cu/Cu2O core-shell nanoparticles. Morphological and structural studies of the obtained material showed that it consists of Cu and Cu/Cu2O core-shell nanoparticles with sizes about 9-25 and 30-50 nm, respectively. The latter demonstrate ferromagnetic properties (specific saturation magnetization is 0.27 A·m2/kg) without additional heat treatment in oxidizing environment. The causes of the ferromagnetic properties of the material obtained are analyzed.

Keywords: 
nanocomposite materials, core-shell nanoparticles, copper, copper oxide, spark erosion.
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