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The effect of dislocation nature on the size effect in Indium Antimonide above and below the brittle-ductile transition
Published online by Cambridge University Press: 07 October 2019
Abstract
The effect of length scale on mechanical strength is a significant consideration for semiconductor materials. In III-V semiconductors, such as InSb, a transition from partial to perfect dislocations occurs at the brittle-to-ductile transition temperature (~150 °C for InSb). High temperature micro-compression reveals InSb to show a small size effect below the transition, similar to ceramics, while in the ductile regime it shows a size effect consistent with fcc metals. The source truncation model is found to agree with the observed trends in strength with size once the change in Burgers vector and bulk strength are taken into account.
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- MRS Advances , Volume 5 , Issue 33-34: Mechanical Behavior and Structural Materials , 2020 , pp. 1811 - 1818
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- Copyright © Materials Research Society 2019
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