Displacement vector and energy of a screw dislocation in a Lennard-Jones amorphous solid

P. Chaudhari; Paul J. Steinhardt

doi:10.1080/01418618208236203

Displacement vector and energy of a screw dislocation in a Lennard-Jones amorphous solid

P. Chaudhari
, Paul J. Steinhardt

Research output: Contribution to journal › Article › peer-review

9 Scopus citations

Abstract

We show that screw dislocations can be stabilized in a Lennard-Jones amorphous solid. Both the energy and the Eshel by twist are in accord with continuum theory. As in a crystal there is a threshold of the initial displacement vector above which a jump in the final displacement (Burgers) vector is observed. However, unlike a crystal, the motion of a screw dislocation or shear displacement exceeding approximately 0.8 of an atom diameter results in changes in density of the material.

Original language	English (US)
Pages (from-to)	25-30
Number of pages	6
Journal	Philosophical Magazine A: Physics of Condensed Matter, Structure, Defects and Mechanical Properties
Volume	46
Issue number	1
DOIs	https://doi.org/10.1080/01418618208236203
State	Published - Jul 1982
Externally published	Yes

All Science Journal Classification (ASJC) codes

Electronic, Optical and Magnetic Materials
General Materials Science
Condensed Matter Physics
Physics and Astronomy (miscellaneous)
Metals and Alloys

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10.1080/01418618208236203

Cite this

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AB - We show that screw dislocations can be stabilized in a Lennard-Jones amorphous solid. Both the energy and the Eshel by twist are in accord with continuum theory. As in a crystal there is a threshold of the initial displacement vector above which a jump in the final displacement (Burgers) vector is observed. However, unlike a crystal, the motion of a screw dislocation or shear displacement exceeding approximately 0.8 of an atom diameter results in changes in density of the material.

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Displacement vector and energy of a screw dislocation in a Lennard-Jones amorphous solid

Abstract

All Science Journal Classification (ASJC) codes

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