The energy of dislocation dipoles

Autor(en)

Gunther Schöck

Abstrakt

In conventional dislocation theory based on the concept of Volterra dislocations, the energy of coplanar dislocation dipoles cannot be obtained without introducing an ill-defined ad hoc annihilation distance. When the dislocations are described more realistically by Peierls dislocations, absolute values for the dipole energy can be obtained from physical arguments. It is found that when dislocations in a dipole come close, they may not annihilate each other but the dipole can collapse when the dislocations have reached a critical separation of several lattice constants.

Organisation(en)

Physik Nanostrukturierter Materialien

Externe Organisation(en)

Universität Wien

Journal

Philosophical Magazine

Band

94

Seiten

1542-1551

Anzahl der Seiten

10

ISSN

1478-6435

DOI

https://doi.org/10.1080/14786435.2014.889327

Publikationsdatum

05-2014

Peer-reviewed

Ja

ÖFOS 2012

103018 Materialphysik

Schlagwörter

Link zum Portal

https://ucrisportal.univie.ac.at/de/publications/0ea982f0-2ba5-42d9-8aa6-4c1dded582d8