TY  - JOUR
AU  - Zhang, J.
AU  - Wang, Y.-J.
AU  - Liu, J.
AU  - Xu, J.
AU  - Wang, D.
AU  - Wang, L.
AU  - Ma, X.-L.
AU  - Jia, C.-L.
AU  - Bellaiche, L.
TI  - Origin of sawtooth domain walls in ferroelectrics
JO  - Physical review / B
VL  - 101
IS  - 6
SN  - 2469-9950
CY  - Woodbury, NY
PB  - Inst.
M1  - FZJ-2020-02723
SP  - 060103
PY  - 2020
AB  - Domains and domain walls are among the key factors that determine the performance of ferroelectric materials. In recent years, a unique type of domain walls, i.e., the sawtooth-shaped domain walls, has been observed in BiFeO3 and PbTiO3. Here, we build a minimal model to reveal the origin of these sawtooth-shaped domain walls. Incorporating this model into Monte Carlo simulations shows that (i) the competition between the long-range Coulomb interaction (due to bound charges) and short-range interaction (due to opposite dipoles) is responsible for the formation of these peculiar domain walls and (ii) their relative strength is critical in determining the periodicity of these sawtooth-shaped domain walls. Necessary conditions to form such domain walls are also discussed.
LB  - PUB:(DE-HGF)16
UR  - <Go to ISI:>//WOS:000515628700001
DO  - DOI:10.1103/PhysRevB.101.060103
UR  - https://juser.fz-juelich.de/record/878254
ER  -