Results 61 to 70 of about 1,489 (205)
Information &Functional Materials, EarlyView.We demonstrate reversible mechanical and electrical control of ordered center‐type topological domains in wrinkled PZT films, with high‐conductivity channels at domain cores, enabling multifield manipulation for future topological devices. ABSTRACT Ferroelectric topological domain textures hold promise as key building blocks for next‐generation ...
Jiahui Zhao +12 more
wiley +1 more source
Achieving Large Uniaxial and Homogeneous Strain in Two‐Dimensional Materials
Small, EarlyView.Strain is a powerful tool for tuning the electronic, magnetic, and topological properties of 2D materials ‐ particularly at high values (>3$>3$%) where many electronic and structural transitions are predicted. Our high‐yield preparation and device strain platform overcomes existing strain limitations (often <1.5$<1.5$%), enabling repeatable and ...
Yangchen He +6 more
wiley +1 more source
Condensed Matter, 2020 In a semi-review paper, we show that the local pseudo-Jahn–Teller effect (PJTE) in transition metal B ion center of ABO3 perovskite crystals, notably BaTiO3, is the basis of all their main properties.
Isaac B. Bersuker, Victor Polinger
doaj +1 more source
A Polar Topology Network Induces Elastic Stiffening in Ferroelectric Oxide Superlattices
Small, EarlyView.The periodicity in BiFeO3/SrTiO3 superlattices tunes the system into a dense, elastically constrained polar texture state. This topology‐rich regime reveals a collective mechanical response in which interactions among polar topological defects restrict local deformations, producing a pronounced elastic stiffening.
Mohammad Moein Seyfouri +10 more
wiley +1 more source
Shock and Vibration, 2017 A novel electric Gibbs function was proposed for the piezoelectric microbeams (PMBs) by employing a modified couple stress theory. Based on the new Gibbs function and the Euler-Bernoulli beam theory, the governing equations which incorporate the effects ...
Xingjia Li, Ying Luo
doaj +1 more source
Control of Polarization and Polar Helicity in BiFeO3 by Epitaxial Strain and Interfacial Chemistry
Advanced Functional Materials, Volume 36, Issue 81, 8 October 2026.In BiFeO3 thin films, the interplay of interfacial chemistry, electrostatics, and epitaxial strain is engineered to stabilize homohelicity in polarization textures at the domain scale. The synergistic use of a Bi2O2‐terminated Aurivillius buffer layer and a highly anisotropic compressive epitaxial strain offers new routes to control the polar‐texture ...
Elzbieta Gradauskaite +5 more
wiley +1 more source
Flexoelectric nanodomains in rare-earth iron garnet thin films under strain gradient
Communications Materials, 2021 Rare-earth iron garnets are ferrimagnetic insulators commercially known for their large magneto-optical effect. Here, strain-gradient engineering is used to induce flexoelectricity in Sm3Fe5O12 films, achieving simultaneous remanent dielectric ...
Hiroyasu Yamahara +10 more
doaj +1 more source
Optical Signature of Moiré Superlattices Formed by Twisted SrTiO3 Membranes
Advanced Functional Materials, Volume 36, Issue 81, 8 October 2026.We discover optical signatures from bonded interfaces in twisted SrTiO3 moiré superlattices, including low‐frequency Raman vibrational modes and strong second‐harmonic generation, consistent with strong interlayer coupling inferred from cross‐sectional electron microscopy and ab initio calculations. ABSTRACT Moiré superlattices formed at the interfaces
T. A. M. Ragib Shahriar +13 more
wiley +1 more source
Advanced Functional Materials, Volume 36, Issue 81, 8 October 2026.Ferroelectric nanoclusters create local internal fields in a normally non‐switchable polar film because of polarization mismatch at their interfaces. That field opposes polarization in the regions with larger polarization and reinforces polarization in the regions with smaller polarization.
Anna N. Morozovska +5 more
wiley +1 more source
Flexoelectric Fracture-Ratchet Effect in Ferroelectrics [PDF]
Physical Review Letters, 2019 The propagation front of a crack generates large strain gradients and it is therefore a strong source of gradient-induced polarization (flexoelectricity). Herein, we demonstrate that, in piezoelectric materials, a consequence of flexoelectricity is that crack propagation is helped or hindered depending on whether it is parallel or antiparallel to the ...
Cordero-Edwards, Kumara +4 more
openaire +5 more sources