Results 141 to 150 of about 204,595 (365)

Structural and Chemical Studies of the Nanoscale Modifications Induced by Swift Heavy Ion Irradiation in SrTiO3 at Grazing Incidence

Advanced Functional Materials, EarlyView.
The nanoscale structural and chemical transformations in SrTiO3 under Swift‐Heavy‐Ion irradiation at grazing incidence are investigated, emphasizing the formation of well‐ordered nanohillocks at the surface of the material, demonstrating significant material decomposition in the created hillocks with: a phase separation of SrO and TiOx, a reduction in ...
Mohammad S. Jamal, Victor Pierron, Tagi Tagiyev, Jérémy Blond, Stéphane Guillous, Clara Grygiel, Stéphane Flament, Bruno Guillet, Zhe Wang, Darrell G. Schlom, Isabelle Monnet, Laurence Méchin, Mamour Sall   +12 more
wiley   +1 more source

Effects of Substrate and Annealing Conditions on the Ferroelectric Properties of Non-Doped HfO₂ Deposited by RF Plasma Sputter

Nanomaterials
In this study, the effect of annealing and substrate conditions on the ferroelectricity of undoped hafnium oxide (HfO2) was analyzed. Hafnium oxide was deposited on various substrates such as platinum, titanium nitride, and silicon (Pt, TiN, Si) through ...
Seokwon Lim, Yeonghwan Ahn, Beomho Won, Suwan Lee, Hayoung Park, Mohit Kumar, Hyungtak Seo   +6 more
doaj   +1 more source

Mimicking Synaptic Plasticity: Optoionic MoS2 Memory Powered by Biopolymer Hydrogels as a Dynamic Cations Reservoir

Advanced Functional Materials, EarlyView.
Janus (MoS2) transistors functionalized with sodium alginate (SA) and poly(vinylidene fluoride‐co‐trifluoroethylene) [P(VDF‐TrFE)] exhibit persistent photo‐induced ionic gating, driven by dynamic cation migration at the hybrid interface. This ionic mechanism enables finely tunable photoconductivity and emulates key synaptic plasticity behaviors ...
Yeonsu Jeong, Pietro Tordi, Adrián Tamayo, Bin Han, Massimo Bonini, Paolo Samorì   +5 more
wiley   +1 more source

Ferroelectricity in Crystals by H. D. Megaw [PDF]

, 1958
A. J. C. Wilson
openalex   +1 more source

Polaronic and Electrochemical Signatures in Group IVB (Ti, Zr, Hf) Oxides: Unified SKP–DFT Insights for Tunable Transport in Energy and Electronic Devices

Advanced Functional Materials, EarlyView.
Charge carrier concentration and mobility in TiO2, ZrO2, and HfO2 powder films are experimentally mapped as a function of temperature. The results uncover polaron‐mediated transport regimes and field‐activated conduction, enabling the design of oxide‐based electronic and energy devices with thermally tunable functionality.
Beatriz Moura Gomes, Júlia Holtz, Maria Luís Pinto, Maria Helena Braga   +3 more
wiley   +1 more source

Ultrathin Free-standing Nanosheets of Bi2O2Se: Room Temperature Ferroelectricity in Self-assembled Charged Layered Heterostructure.

Nano letters (Print), 2019
Ultrathin ferroelectric semiconductors with high charge carrier mobility are much coveted systems for the advancement of various electronic and optoelectronic devices.
T. Ghosh, Manisha Samanta, Aastha Vasdev, K. Dolui, J. Ghatak, T. Das, G. Sheet, K. Biswas   +7 more
semanticscholar   +1 more source

Memory Matrix Using Ferroelectric Condensers as Bistable Elements [PDF]

, 1955
Charles F. Pulvari
openalex   +1 more source

Vortex ferroelectric domains

Journal of Physics: Condensed Matter, 2008
We show experimental switching data on microscale capacitors of lead-zirconate-titanate (PZT), which reveal time-resolved domain behavior during switching on a 100-ns scale. For small circular capacitors, an unswitched domain remains in the center while complete switching is observed in square capacitors.
Gruverman, Alexei, Wu, D., Fan, H.-J., Vrejoiu, I., Alexe, M., Harrison, R. J., Scott, J. F.   +6 more
openaire   +4 more sources

Manipulating Ferroelectric Topological Polar Structures with Twisted Light

Advanced Materials, EarlyView.
We demonstrate dynamic control of ferroelectric order in quasi‐2D CsBiNb2O7 using twisted ultraviolet light carrying orbital angular momentum. Our approach harnesses non‐resonant multiphoton absorption and induced strain to modulate topological of ferroelectric polarization textures.
Nimish P. Nazirkar, Viet Tran, Pascal Bassène, Atoumane Ndiaye, Julie Barringer, Jie Jiang, Wonsuk Cha, Ross Harder, Jian Shi, Moussa N'Gom, Edwin Fohtung   +10 more
wiley   +1 more source

Room-temperature ferroelectricity in A-site ordered Ruddlesden-Popper Li2CaTa2O7 ceramics

Journal of Materiomics, 2020
In the present work, the crystal structure, ferroelectric and dielectric properties of the dense single-phase Li2CaTa2O7 ceramics with A-site ordered double-layer Ruddlesden-Popper structures have been investigated by the experiments and first-principles
B.H. Zhang, Z.Z. Hu, B.H. Chen, X.Q. Liu, X.M. Chen   +4 more
doaj