Abstract
The core structure of the edge dislocations in body-centered cubic (bcc) crystal Fe has been investigated by themodified Peierls–Nabarro (P–N) equation which includes the discrete correction. Ananalytical expression of the dislocation solution of the dislocation equation has beenobtained by using the truncation approximation. It is found that the dislocation width isnearly doubled by the discrete effects and the agreement between the theoretical predictionand the numerical simulation is improved remarkably.
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