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Dislocation neutralizing in a self-organized array of dislocation and anti-dislocation |
| Feng-Lin Deng(邓凤麟)1, Xiang-Sheng Hu(胡湘生)2, Shao-Feng Wang(王少峰)1 |
1 Department of Physics and Institute for Structure and Function, Chongqing University, Chongqing 400030, China;
2 Department of Mechanics, Huazhong University of Science and Technology, Wuhan 430074, China |
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Abstract A one-dimensional (1D) self-organized array composed of dislocation and anti-dislocation is analytically investigated in the frame of Peierls theory. From the exact solution of the Peierls equation, it is found that there exists strong neutralizing effect that makes the Burgers vector of each individual dislocation in the equilibrium array smaller than that of an isolated dislocation. This neutralizing effect is not negligible even though dislocations are well separated. For example, when the distance between the dislocation and the anti-dislocation is as large as ten times of the dislocation width, the actual Burgers vector is only about 80% of an isolated dislocation. The neutralizing effect originates physically from the power-law asymptotic behavior that enables two dislocations interfere even though they are well separated.
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Received: 18 August 2019
Revised: 11 September 2019
Accepted manuscript online:
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PACS:
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61.72.Bb
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(Theories and models of crystal defects)
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| Fund: Project supported by the National Natural Science Foundation of China (Grant No. 11874093). |
Corresponding Authors:
Shao-Feng Wang
E-mail: sfwang@cqu.edu.cn
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Cite this article:
Feng-Lin Deng(邓凤麟), Xiang-Sheng Hu(胡湘生), Shao-Feng Wang(王少峰) Dislocation neutralizing in a self-organized array of dislocation and anti-dislocation 2019 Chin. Phys. B 28 116103
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