Robust Piezoelectricity with Spontaneous Polarization in Monolayer Tellurene and Multilayer Tellurium Film at Room Temperature for Reliable Memory
Sign Up to like & getrecommendations! Published in 2022 at "Advanced Materials"
DOI: 10.1002/adma.202204697
Abstract: Robust neuromorphic computing in the Big Data era calls for long‐term stable crossbar‐array memory cells; however, the elemental segregation in the switch unit and memory unit that inevitably occurs upon cycling breaks the compositional and… read more here.
Keywords: spontaneous polarization; monolayer tellurene; tellurium; segregation ... See more keywords
Fluid Layered Ferroelectrics with Global C∞v Symmetry
Sign Up to like & getrecommendations! Published in 2022 at "Advanced Science"
DOI: 10.1002/advs.202202048
Abstract: Ferroelectricity in fluid materials, which allows free rotation of molecules, is an unusual phenomenon raising cutting‐edge questions in science. Conventional ferroelectric liquid crystals have been found in phases with low symmetry that permit the presence… read more here.
Keywords: spontaneous polarization; ferroelectricity; symmetry; layered ferroelectrics ... See more keywords
On the Origin of the Large Remanent Polarization in La:HfO2
Sign Up to like & getrecommendations! Published in 2019 at "Advanced Electronic Materials"
DOI: 10.1002/aelm.201900303
Abstract: The outstanding remanent polarization of 40 µC cm–2 reported for a 10 nm thin La:HfO2 film in 2013 has attracted much attention. However, up to now, no explanation for this large remanent polarization has been… read more here.
Keywords: polarization; spontaneous polarization; large remanent; polarization hfo2 ... See more keywords
Charge Separation in BaTiO3 Nanocrystals: Spontaneous Polarization Versus Point Defect Chemistry.
Sign Up to like & getrecommendations! Published in 2023 at "Small"
DOI: 10.1002/smll.202206805
Abstract: The fate of photogenerated charges within ferroelectric metal oxides is key for photocatalytic applications. The authors study the contributions of i) tetragonal distortion, responsible for spontaneous polarization, and ii) point defects, on charge separation and… read more here.
Keywords: chemistry; spontaneous polarization; charge separation;
2D Ruddlesden-Popper Polycrystalline PerovskitePyro-Phototronic Photodetectors.
Sign Up to like & getrecommendations! Published in 2023 at "Small"
DOI: 10.1002/smll.202207185
Abstract: Two-dimensional (2D) Ruddlesden-Popper (RP) layered halide perovskite has attracted wide attentions due to its unique structure and excellent optoelectronic properties. With inserting organic cations, inorganic octahedrons are forced to extend in a certain direction, resulting… read more here.
Keywords: ruddlesden popper; spontaneous polarization; polycrystalline; effect ... See more keywords
1,2,4-Azadiphosphole-based piezoelectric penta-CNP sheet with high spontaneous polarization
Sign Up to like & getrecommendations! Published in 2021 at "Applied Surface Science"
DOI: 10.1016/j.apsusc.2021.149499
Abstract: Abstract Miniaturizing piezoelectric devices calls for the rational design of two-dimensional (2D) materials with outstanding piezoelectric response and good synthetic feasibility. Here we propose a new ternary 2D pentagonal structure named penta-CNP by assembling the… read more here.
Keywords: spontaneous polarization; cnp; azadiphosphole; penta cnp ... See more keywords
Mechanism of spontaneous polarization transfer in high-field SABRE experiments.
Sign Up to like & getrecommendations! Published in 2018 at "Journal of magnetic resonance"
DOI: 10.1016/j.jmr.2017.12.018
Abstract: We propose an explanation of the previously reported SABRE (Signal Amplification By Reversible Exchange) effect at high magnetic fields, observed in the absence of RF-excitation and relying only on "spontaneous" polarization transfer from parahydrogen (pH2,… read more here.
Keywords: spontaneous polarization; sabre; field; polarization transfer ... See more keywords
Crystal-Plane Controlled Spontaneous Polarization of Inorganic Perovskite toward Boosting Triboelectric Surface Charge Density.
Sign Up to like & getrecommendations! Published in 2021 at "ACS applied materials & interfaces"
DOI: 10.1021/acsami.1c05796
Abstract: Triboelectric generators (TENGs) have been extensively studied as a new energy for low cost and the universally applicable prospect. Meanwhile, perovskites have been applied in TENG and show a good performance in view of high… read more here.
Keywords: spontaneous polarization; surface; charge; density ... See more keywords
First-principles studies of spontaneous polarization in mixed poly(vinylidene fluoride)/2,3,3,3-tetrafluoropropene polymer crystals.
Sign Up to like & getrecommendations! Published in 2018 at "Soft matter"
DOI: 10.1039/c8sm00262b
Abstract: Spontaneous polarization P of mixed polymer crystals based on β poly(vinylidene fluoride) (PVDF, -CH2-CF2-) and 2,3,3,3-tetrafluoropropene (TFP, -CH2-CF(CF3)-) was evaluated for β-PVDF/iso-PTFP, β-PVDF/P(VDF-alt-iso-TFP) and β-PVDF/syndio-PTFP. A plane-wave-based density-functional theory (DFT) approach, combined with the Modern… read more here.
Keywords: poly vinylidene; vinylidene fluoride; spontaneous polarization; polarization ... See more keywords
Unusual symmetry breaking in high-temperature enantiomeric ferroelectrics with large spontaneous polarization.
Sign Up to like & getrecommendations! Published in 2022 at "Dalton transactions"
DOI: 10.1039/d2dt00592a
Abstract: Chiral organic-inorganic hybrid perovskites have gained extensive research interest due to their combination of chirality and the excellent optical, electrical and spin properties of perovskite materials, especially in two-dimensional hybrid perovskites. Herein, we report two-dimensional… read more here.
Keywords: temperature; large spontaneous; mpa 2cdcl4; spontaneous polarization ... See more keywords
Spontaneous polarization enhancement in ferroelectric Hf0.5Zr0.5O2 using atomic oxygen defects engineering: An ab initio study
Sign Up to like & getrecommendations! Published in 2019 at "Applied Physics Letters"
DOI: 10.1063/1.5115293
Abstract: Oxygen defect impacts on ferroelectricity in Hf0.5Zr0.5O2 (HZO) are systematically studied on the basis of first-principles calculations. Importantly, the oxygen vacancy and Frenkel pair could enhance the spontaneous polarization (Ps) by an average of 14.5%,… read more here.
Keywords: oxygen; spontaneous polarization; hzo; polarization ... See more keywords