Results 71 to 80 of about 15,250 (308)

Landau Expansion for Ferroelectrics: Which Variable to Use?

open access: yes
The problem of the choice of the order parameter of the Landau expansion of proper ferroelectrics is discussed. The expansion with respect to the (i) electric displacement, (ii) polarization, (iii) ferroelectric contribution to the polarization, (iv ...
Tagantsev, A.K.
core   +1 more source

Optical properties and model of relaxor ferroelectrics

open access: yes, 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  

Charge localization in the model of relaxor ferroelectrics [PDF]

open access: yes, 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  

Light scattering in relaxor ferroelectrics due to domain structure

open access: yes, 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

Electrode and Microstructure Dependence of Oxygen Diffusion in Ferroelectric Hafnium Zirconium Oxide Thin Films

open access: yesAdvanced Functional Materials, EarlyView.
Significant nanoscale oxygen diffusion coefficient variations are measured in ferroelectric hafnium zirconium oxide films with grain boundaries and electrode interfaces exhibiting values 104 times larger than the grain cores. Overall coefficients are 10X larger for films prepared with metal nitride electrodes compared to refractory metals. New insights
Liron Shvilberg   +6 more
wiley   +1 more source

Porous flexible molecular-based piezoelectric composite achieves milliwatt output power density

open access: yesNature Communications
Molecular ferroelectrics have made breakthrough progress in intrinsic piezoelectric response that can be on par with advanced inorganic piezoelectric ceramics.
Jia-Qi Luo   +7 more
doaj   +1 more source

Optical properties (VUV region) of ABO(3) ferroelectrics: Application of syncrotron radiation

open access: yes, 2004
10th European Meeting on Ferroelectricity -- AUG 03-08, 2003 -- Univ Cambridge, Cambridge, ENGLANDWOS: 000222471200026The method of vacuum ultraviolet (VUV) spectroscopy were used to study the optical properties of ABO(3) ferroelectrics (LiNbO3, LiTaO3 ...
Mamedov, AM, Mamedov A.M.
core   +1 more source

Integrated Field‐Free SOT Domain‐Wall Synapses and MTJ Stochastic Neurons for Hardware Boltzmann Machines

open access: yesAdvanced Functional Materials, EarlyView.
Field‐free spin‐orbit torque domain‐wall synapses integrated with stochastic MTJ neurons enable compact hardware Boltzmann machines. Leveraging intrinsic stochasticity and multi‐level conductance, the system achieves efficient probabilistic learning with high accuracy, demonstrating a scalable spintronic platform for energy‐efficient edge AI.
Aijaz H. Lone   +8 more
wiley   +1 more source

Designing new ferroelectrics with a general strategy

open access: yesnpj Quantum Materials, 2017
Ferroelectricity: General approach for designing new ferroelectric materials An innovative computational method could enable the design of new classes of ferroelectric materials.
Ke Xu, Xue-Zeng Lu, Hongjun Xiang
doaj   +1 more source

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