Results 71 to 80 of about 18,249 (302)
Theory of electronic ferroelectricity [PDF]
Physical Review B, 1996 We present a theory of the linear and nonlinear optical characteristics of the insulating phase of the Falicov-Kimball model within the self-consistent mean-field approximation. The Coulomb attraction between the itinerant d-electrons and the localized f-holes gives rise to a built-in coherence between the d and f-states, which breaks the inversion ...
Portengen, T. +2 more
openaire +3 more sources
Operando Tracking of Oxygen‐Vacancy Dynamics and Negative Capacitance in Ca‐Doped BiFeO3
Advanced Functional Materials, EarlyView.Operando electrochemical impedance spectroscopy, combined with electrocoloration, enables a direct correlation between real‐space ionic redistribution and the corresponding frequency‐domain electrical response. In lateral Ca‐doped BiFeO3 devices, time‐resolved impedance snapshots capture the evolution from bulk‐dominated mixed conduction to an ...
Jeonghun Suh +3 more
wiley +1 more source
Optical properties and model of relaxor ferroelectrics
, 2020 Phenomenological approach to a relaxor theory is developed and some experi-mental results in the support of this theory are received. The optical absorption spectrum, luminescent emission and photoconductivity are investigated in the wide temperature ...
Nikitin S. +4 more
core
Light scattering in relaxor ferroelectrics due to domain structure
, 2003 Domain structure of relaxor ferroelectrics was obtained theoretically by T-matrix method. First we discuss numerical aspects of T-matrix computations specific for spheroidal particles and present results of benchmark computations for a simple Chebyshev's
Gunel G., Mamedov A.M., Babur Y.
core +1 more source
Advanced ferroelectric oxide films and heterostructures for unconventional applications
Advances in Physics: XFerroelectrics, known for their reversible spontaneous electric polarization, have garnered significant interest in both fundamental physics and applications, such as non-volatile memories and sensors.
Sisi Huang, Cheng Ma, Kuijuan Jin
doaj +1 more source
The rise of 2D materials/ferroelectrics for next generation photonics and optoelectronics devices
APL Materials, 2022 Photonic and optoelectronic devices have been limited in most two-dimensional (2D) materials. Researchers have attempted diverse device structures, such as introducing some ferroelectric materials to form new hybrid materials that could improve the ...
Linghua Jin +10 more
doaj +1 more source
Displacive In-Plane Ferroelectricity with Domain-Specific Curie Temperature in Van der Waals Semiconductors. [PDF]
Adv Sci (Weinh)Temperature‐dependent electron diffraction on tin monochalcogenides demonstrates a gradual displacive transformation between ferroelectric and paraelectric phases with significant variability in lattice constants and Curie temperature (TC). Periodic variations exist even between domains in individual crystals, implying a domain‐specific Curie ...
Sutter P, Sutter E.
europepmc +2 more sources
Advanced Functional Materials, EarlyView.This Perspective highlights atom probe tomography as a powerful tool for understanding the atomic‐scale defect chemistry in HfO2‐based ferroelectrics. 3D mapping of dopants, point defects, and interface chemistry can provide new insight into defect‐driven mechanisms underpinning the ferroelectricity in the system and guide the design of more reliable ...
Kasper Hunnestad +3 more
wiley +1 more source
Charge localization in the model of relaxor ferroelectrics [PDF]
, 2003 Phenomenological approach to a relaxor theory is developed and some experimental results in the support of this theory are received. The optical absorption spectrum, luminescent emission and photoconductivity are investigated in the wide temperature ...
Nikitin S. +4 more
core
Advanced Science, 2023 Inorganic ferroelectrics have long dominated research and applications, taking advantage of high piezoelectric performance in bulk polycrystalline ceramic forms.
Yong Ai +8 more
doaj +1 more source