Particle Morphology and Phase Compositions of CoPt and CoPd Nanostructured Systems in the Regions Rich in Precious Metals
YU. A. ZAKHAROV, I. N. TIKHONOVA, V. M. PUGACHEV, A. N. POPOVA, N. S. ZAKHAROV, V. G. DODONOV, D. M. RUSSAKOV
Federal Research Center for Coal and Coal Chemistry, Siberian Branch of the Russian Academy of Sciences, Kemerovo, Russia
Keywords: particle morphology, phase transformations, upper solubility limit (during synthesis), diffraction-undetectable phase, nanostructured powders
Pages: 511–521
Abstract
The morphology of nanoparticles, structural-phase properties, and phase transformations that occur during heating in the nanostructured CoPt and CoPd systems rich in precious metals, obtained by co-reduction of aqueous precursor solutions by hydrazine hydrate, were studied by X-ray phase analysis and X-ray structural analysis, small-angle X-ray scattering, and high-resolution transmission electron microscopy. The results obtained are of interest for the development of the fundamentals of materials science of bimetallic nanoalloys, and provide a key to understand the processes of the formation of FePt, CoPt and FePd nanoalloys while heating intermetallic compounds with a highly ordered structure L10, which possess record-setting magnetic and magneto-optical properties.
DOI: 10.15372/CSD2023496
EDN: AHGANO
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