Open AccessSynthesis of mixed germanium tin nanoparticles by spark-discharge
Author(s) -
А. А. Лизунова,
V. I. Borisov,
B. I. Masnaviev,
Valentin R. Solovey,
В. В. Иванов
Publication year - 2020
Publication title -
journal of physics. conference series
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.21
H-Index - 85
eISSN - 1742-6596
pISSN - 1742-6588
DOI - 10.1088/1742-6596/1695/1/012017
Subject(s) - tin , germanium , nanoparticle , materials science , germanium oxide , raman spectroscopy , electrode , agglomerate , inert gas , bimetallic strip , tin oxide , analytical chemistry (journal) , chemical engineering , nanotechnology , oxide , metallurgy , silicon , metal , composite material , chemistry , optics , physics , engineering , chromatography
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.