In-situ transmission electron microscopy of partial-dislocation glide in 4H-SiC under electron radiation

作者: Yutaka Ohno , Ichiro Yonenaga , Kotaro Miyao , Koji Maeda , Hidekazu Tsuchida

DOI: 10.1063/1.4737938

关键词: Condensed matter physicsStacking-fault energyPartial dislocationsSlip (materials science)IrradiationElectron beam processingStackingTransmission electron microscopyElectronMaterials science

摘要: Electron-radiation-enhanced glide of 30°-Si(g) partial dislocations bringing about an expansion/shrinkage Shockley-type stacking faults in 4H-SiC was observed in-situ by transmission electron microscopy. Geometrical kinks on partials did not migrate the dark, indicating that kink migration is enhanced irradiation. The direction reversible depending irradiation intensity, which can be interpreted terms a sign reversal driving force originating effective fault energy variable with intensity.

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