METHOD OF OBTAINING HYBRID NANOCRYSTALS AUFE/FE AND INTERMETALLIC NANOCRYSTALS AUFE WITH CONTROLLED LATERAL SIZE Russian patent published in 2021 - IPC C30B23/06 C30B23/08 C30B29/52 C23C14/02 C23C14/14 C23C14/32 B82B3/00 B82Y5/00 B82Y40/00 

FIELD: nanocrystals.

SUBSTANCE: invention relates to technologies for producing nanometer-sized materials, consisting of bimetallic hybrid nanocrystals Au₃Fe_1-x/Fe and monophase nanocrystals of intermetallic compounds Au₃Fe_1-x with a controlled-variable lateral size and can be used in biomedicine, information technology and catalysis. The method of obtaining hybrid nanocrystals Au₃Fe_1-x /Fe and intermetallic nanocrystals Au₃Fe_1-x with a controllably variable lateral size is characterized by the fact that a layer of gold is deposited on a preliminarily prepared amorphous oxide surface by thermal evaporation in an ultrahigh vacuum in a molecular beam epitaxy chamber at a temperature of 250°C. Then a layer of iron is deposited on the surface of the amorphous oxide, activated by gold at a temperature of 750°C, and the atomic ratio of gold to iron varies from more than 0 to 3.22.

EFFECT: invention provides possibility of a controlled change in the lateral size of the obtained bimetallic hybrid Au₃Fe_1-x/Fe nanocrystals and monophase nanocrystals of intermetallic Au₃Fe_1-x by changing the number of Au atoms pre-deposited on the amorphous oxide surface with the same number of deposited Fe atoms.

1 cl, 1 ex, 2 dwg