Velocities of Screw and 60°‐Dislocations in Silicon

説明

<jats:title>Abstract</jats:title><jats:p>The velocities of screw and 60°‐dislocations in silicon have been measured for temperatures <jats:italic>T</jats:italic> between 580 and 800 °C and stresses τ between 0.1 and 3 kp/mm<jats:sup>2</jats:sup>. The activation energy for the movement of 60°‐dislocations <jats:italic>Q</jats:italic><jats:sub>60°</jats:sub> is stress‐dependent in the whole stress range, that for screw dislocation <jats:italic>Q</jats:italic><jats:sub>s</jats:sub> is constant for τ ≧ 0.4 kp/mm<jats:sup>2</jats:sup> and becomes also stress‐dependent below 0.4 kp/mm<jats:sup>2</jats:sup>. The current theories for kink motion do not yield a satisfactory description of the experimental results.</jats:p>

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