14 December 2024: New publication in Acta Materialia

In this work we re-examine the modeling of disclocation cores in SrTiO₃. We show that edge dislocations are charge-neutral and glissile.

Finally, we investigate edge dislocations that are dissociated in their climb plane, and confirm that they are energetically more favourable than their glissile counterparts. Computing the activation energy for the core transformation provides insight into the ducti le-brittle transition.

To learn more:

P. Hirel, P. Cordier & P. Carrez (2025) <110>{-110}  edge dislocations in strontium titanate : charged vs neutral, glide vs climb. Acta Materialia, 285, 120636. https://doi.org/10.1016/j.actamat.2024.120636