TY - JOUR
T1 - Anisotropic dislocation-domain wall interactions in ferroelectrics
AU - Zhuo, Fangping
AU - Zhou, Xiandong
AU - Gao, Shuang
AU - Höfling, Marion
AU - Dietrich, Felix
AU - Groszewicz, Pedro B.
AU - Fulanović, Lovro
AU - Breckner, Patrick
AU - Wohninsland, Andreas
AU - Xu, Bai Xiang
AU - Kleebe, Hans Joachim
AU - Tan, Xiaoli
AU - Koruza, Jurij
AU - Damjanovic, Dragan
AU - Rödel, Jürgen
N1 - Funding Information:
We thank Prof. Dr. G. Buntkowsky for access to the NMR spectrometer. We also thank K. Albe, L. Riemer, X. Fang, and L. Porz for helpful discussions. This work was supported by the German Research Foundation (DFG) through project No. 414179371. The simulation work was partially funded by project no. 398072825 of DFG. X.Z. and B.-X.X. thank the HHLR, Technical University of Darmstadt, for access to the Lichtenberg High-Performance Computer and for technical support. P.B.G. acknowledges financial support by the Dutch Research Council (NWO) for the ECCM Tenure Track funding under project number ECCM.006, as well as the DFG under contract Bu-911-28-1. F.Z. acknowledges support from the Alexander von Humboldt (AvH) Foundation for the fellowship with award number 1203828. D.D. thanks the AvH Foundation for the research award (no. 1214412).
Funding Information:
We thank Prof. Dr. G. Buntkowsky for access to the NMR spectrometer. We also thank K. Albe, L. Riemer, X. Fang, and L. Porz for helpful discussions. This work was supported by the German Research Foundation (DFG) through project No. 414179371. The simulation work was partially funded by project no. 398072825 of DFG. X.Z. and B.-X.X. thank the HHLR, Technical University of Darmstadt, for access to the Lichtenberg High-Performance Computer and for technical support. P.B.G. acknowledges financial support by the Dutch Research Council (NWO) for the ECCM Tenure Track funding under project number ECCM.006, as well as the DFG under contract Bu-911-28-1. F.Z. acknowledges support from the Alexander von Humboldt (AvH) Foundation for the fellowship with award number 1203828. D.D. thanks the AvH Foundation for the research award (no. 1214412).
Publisher Copyright:
© 2022, The Author(s).
PY - 2022/12
Y1 - 2022/12
N2 - Dislocations are usually expected to degrade electrical, thermal and optical functionality and to tune mechanical properties of materials. Here, we demonstrate a general framework for the control of dislocation–domain wall interactions in ferroics, employing an imprinted dislocation network. Anisotropic dielectric and electromechanical properties are engineered in barium titanate crystals via well-controlled line-plane relationships, culminating in extraordinary and stable large-signal dielectric permittivity (≈23100) and piezoelectric coefficient (≈2470 pm V–1). In contrast, a related increase in properties utilizing point-plane relation prompts a dramatic cyclic degradation. Observed dielectric and piezoelectric properties are rationalized using transmission electron microscopy and time- and cycle-dependent nuclear magnetic resonance paired with X-ray diffraction. Succinct mechanistic understanding is provided by phase-field simulations and driving force calculations of the described dislocation–domain wall interactions. Our 1D-2D defect approach offers a fertile ground for tailoring functionality in a wide range of functional material systems.
AB - Dislocations are usually expected to degrade electrical, thermal and optical functionality and to tune mechanical properties of materials. Here, we demonstrate a general framework for the control of dislocation–domain wall interactions in ferroics, employing an imprinted dislocation network. Anisotropic dielectric and electromechanical properties are engineered in barium titanate crystals via well-controlled line-plane relationships, culminating in extraordinary and stable large-signal dielectric permittivity (≈23100) and piezoelectric coefficient (≈2470 pm V–1). In contrast, a related increase in properties utilizing point-plane relation prompts a dramatic cyclic degradation. Observed dielectric and piezoelectric properties are rationalized using transmission electron microscopy and time- and cycle-dependent nuclear magnetic resonance paired with X-ray diffraction. Succinct mechanistic understanding is provided by phase-field simulations and driving force calculations of the described dislocation–domain wall interactions. Our 1D-2D defect approach offers a fertile ground for tailoring functionality in a wide range of functional material systems.
UR - http://www.scopus.com/inward/record.url?scp=85141383845&partnerID=8YFLogxK
U2 - 10.1038/s41467-022-34304-7
DO - 10.1038/s41467-022-34304-7
M3 - Article
C2 - 36335109
AN - SCOPUS:85141383845
SN - 2041-1723
VL - 13
JO - Nature Communications
JF - Nature Communications
IS - 1
M1 - 6676
ER -