Structural changes of silicon upon high-energy milling investigated by Raman spectroscopy

P Unifantowicz, S Vaucher, M Lewandowska, K J Kurzydłowski
2007 Journal of Physics: Condensed Matter  
This study showed pronounced changes in the Raman scattering of silicon powder during high-energy ball milling. The powders were milled for 1-18 h in a steel ball mill in argon. The approximate pressure imposed on particles was 2 GPa. The spectra of the as-milled powders were compared with the initial silicon. It was found from the Raman peak position shifts that milling generated strains in the silicon lattice, bringing about a transformation of cubic silicon to tetragonal silicon and
more » ... tion. The relative amount of new phases was determined from the area under the measured Raman peaks.
doi:10.1088/0953-8984/20/02/025205 fatcat:z2e5xxjo6rbrlnbobadhwommje