Plastic deformation of gallium arsenide micropillars under uniaxial compression at room temperature
2007 (English)In: Applied Physics Letters, ISSN 0003-6951, E-ISSN 1077-3118, Vol. 90, no 4, 043123- p.Article in journal (Refereed) Published
The authors have experimentally investigated the compressive strength of GaAs pillars with a diameter of 1 µm by uniaxial compression tests. The tests were performed at room temperature and, contrary to macroscopic tests, the micropillars were found to exhibit ductile plasticity comparable to that of metal single crystal micropillars. The yield stress was 1.8±0.4 GPa and, for one pillar that was more closely examined, a total deformation of 24% was observed. In the diffraction patterns from transmission electron microscopy studies of this pillar, a high density of twins was observed.
Place, publisher, year, edition, pages
2007. Vol. 90, no 4, 043123- p.
plastic deformation, gallium arsenide, III-V semiconductors, compressive strength, plasticity, yield stress, transmission electron microscopy, twinning
Natural Sciences Engineering and Technology
IdentifiersURN: urn:nbn:se:uu:diva-26503DOI: 10.1063/1.2432277ISI: 000243789600100OAI: oai:DiVA.org:uu-26503DiVA: diva2:54277