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Nanoindentations and nanoscratches in GaAs under Berkovich and 60° wedge indenters were investigated via transmission electron microscopy. Dislocations, twins and slip bands are convergent under the Berkovich indenter, whereas they are only divergent under the 60° wedge. This difference is explained in terms of crystallography and geometry. Median cracks were created under the wedge indenter although...
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