Influence of Phase Transformations on Incipient Plasticity of Si-Nanospheres

• Authors: D. Chrobak , R. Nowak
• Languages of publication: EN

Abstracts

EN

Our finding of the current spike effect highlighted for the first time in 2009 offers an enhanced understanding of the link between nanoscale mechanical deformation and electrical behavior, and ultimately suggests key advances in unique phase-change applications in future electronics. Certainly, crystal imperfections affect the properties of the nanoparticles themselves, e.g., their biocompatibility and biodegradability. The potential role of dislocations having a profound impact on the use of Si nanoparticles was largely overlooked, since plastic deformation of bulk Si is dominated by amorphization and phase transformations. Here we show an effect of bulk → nanoparticle transition (deconfinement) on incipient plasticity of Si-nanovolume. Our results provide a fresh insight into the dilemma concerning dislocation or phase transformation origin of nanoscale plastic deformation of semiconductor nanoobjects.

Keywords

EN

62.20.-x; 62.50.-p; 64.70.kg

Discipline

• 64.70.kg: Semiconductors
• 62.50.-p: High-pressure effects in solids and liquids(for high pressure apparatus and techniques, see 07.35.+k; for high-pressure behavior of rocks and minerals, see 91.60.Gf; for pressure treatments, see 81.40.Vw in materials science; for effects of pressure on superconducting transition temperature, see 74.62.Fj)
• 62.20.-x: Mechanical properties of solids

• Journal: Acta Physica Polonica A
• Year: 2017
• Volume: 131
• Issue: 5
• Pages: 1318-1331

Dates

published

2017-05

Contributors

author

D. Chrobak

• Institute of Materials Science, University of Silesia in Katowice, 75 Pułku Piechoty 1, 40-500 Chorzów, Poland

author

R. Nowak

• School of Chemical Technology, Aalto University, P.O. Box 16100, 00076 Aalto, Finland

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Identifiers

DOI

10.12693/APhysPolA.131.1328