Abstract
The paper represents the investigations of dimensional and structural properties of nanoparticles produced by pulsed-periodic spark discharge by simultaneous electrical erosion of germanium and tin electrodes in inert atmosphere. Two alloys of GeSn nanoparticles with different mass fractions of tin were obtained by altering the polarity of the electrodes. The nanoparticles’ sizes from 4 to 45 nm were observed. It was shown that the samples consist of core-shell nanoparticles agglomerates, where both β-tin crystals and cubic germanium ones presence as a core; the shell is a mixed germanium tin oxide. Furthermore, a shift of a maximum of Raman peak by 3.5 cm−1 to lower wave numbers with an increase in relative fraction of tin was detected.
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