Theory of Peierls Force of a Boundary Layer

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概要

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• An exact solution to the Frenkel-Kontorova equation for a one-dimensionaldislocation under stress is obtained by numerical calculations, and is comparedwith some of approximate solutions which are calculated from a continuummodel, a successive approach, the usual Peierls barrier model and the two-parabola approximation to a sinusoidal potential. The exact solution shows thati) the Peierls force is not an oscil[atory but a monotonically decreasing functionof the thickness of the boundary layer, and ii) of the above approximations,the usual Peierls potential barrier model is best, while the two-parabola approxi-mation is worst. As examples of the Peierls force, an effective shear stress of thecoherent twin boundary and an intrinsic coercive force of 180' Bloch domainwall are discussed.

• 社団法人日本物理学会の論文
• 1979-10-15

著者

• Sugiyama Akira

  Physics Loboratory Department Of General Education Nagoya University

• Sugiyama Akira

  Physics Labolatory. College Of General Education Nagoya University

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• Theory of Valency Effect of Impurity Atoms on Hardening of Alloys
• Theory of Peierls Force of a Boundary Layer
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• Calculation of Stacking Fault Energy by Use of Long-Range Interionic Potential. : I. Application of Ewald Method
• Quasi-Stationary Propagation of Dislocation Kink

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