There seems a clear trend that slip systems with the higher bulk CRSS values exhibit the lower n values as in the case of fcc and bcc metals, although the mechanism that governs the size-dependent CRSS in α-Nb 5 Si 3 and Mo 5 SiB 2 is the dislocation nucleation from the surfaces or edges of micropillar specimens as described above.
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Micropillar compression deformation of single crystals of α-Nb<sub>5</sub>Si<sub>3</sub> with the tetragonal D8 <i><sub>l</sub></i> structure.
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