Magnetoplastic effect in silicon: A search for new methods of controlling structure-sensitive properties of elemental semiconductors |
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Authors: | A A Skvortsov A M Orlov A A Solov’ev and D I Belov |
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Institution: | 1.Ulyanovsk State University,Ulyanovsk,Russia |
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Abstract: | The effect of static magnetic fields up to 1 T on the state of impurity point defects and the mobility of surface dislocation
segments in doped (0.01–1.00 Ω cm) silicon has been considered. Long-lived (∼100 h) changes in the state of point defects
have been revealed from the mobility of dislocations introduced after the magnetic-field treatment. The concentration dependence
of the magnetoplastic effect in p-type silicon has been studied. A threshold impurity concentration of 1015 cm−3 has been found, below which the magneto-plastic effect has not been observed. The influence of magnetic-field pretreatment
on the expectation times and activation barriers for dislocation depinning from stoppers and the effect of thermal preannealing
on the magnetoplasticity in Si have been considered. |
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