Results 61 to 70 of about 11,801 (277)
Cerâmica, 1999 O Niobato de Chumbo e Magnésio (PMN) é um material que possui propriedades ferroelétricas de relaxação. Essa propriedade pode ser acentuada ou alterada mediante a adição de dopantes.
A. A. Cavalheiro +2 more
doaj +1 more source
Journal of Materiomics, 2022 Bi0.5Na0.5TiO3 (BNT)-based ceramics are one of the most promising lead-free ferroelectrics due to their high strain property. Compared to other chemical modifications, rare earth ions doping provides significant possibility to optimize the strain ...
Anping Deng, Jiagang Wu
doaj +1 more source
State transition and electrocaloric effect of BaZr$_{x}$Ti$_{1-x}$O$_3$: simulation and experiment
, 2016 The electrocaloric effect (ECE) of BaZr$_{x}$Ti$_{1-x}$O$_3$ (BZT) is closely related to the relaxor state transition of the materials. This work presents a systematic study on the ECE and the state transition of the BZT, using a combined canonical and ...
Bai-Xiang Xu +9 more
core +1 more source
Orbital-Order Driven Ferroelectricity and Dipolar Relaxation Dynamics in Multiferroic GaMo$_4$S$_8$ [PDF]
, 2018 We present the results of broadband dielectric spectroscopy of GaMo$_4$S$_8$, a lacunar spinel system that recently was shown to exhibit non-canonical, orbitally-driven ferroelectricity.
Geirhos, K. +6 more
core +2 more sources
Enzymatic degradation of biopolymers in amorphous and molten states: mechanisms and applications
FEBS Open Bio, EarlyView.This review explains how polymer morphology and thermal state shape enzymatic degradation pathways, comparing amorphous and molten biopolymer structures. By integrating structure–reactivity principles with insights from thermodynamics and enzyme engineering, it highlights mechanisms that enable efficient polymer breakdown.
Anđela Pustak, Aleksandra Maršavelski
wiley +1 more source
FEBS Open Bio, EarlyView.Unique biological samples, such as site‐specific mutant proteins, are available only in limited quantities. Here, we present a polarization‐resolved transient infrared spectroscopy setup with referencing to improve signal‐to‐noise tailored towards tracing small signals. We provide an overview of characterizing the excitation conditions for polarization‐
Clark Zahn, Karsten Heyne
wiley +1 more source
Titanate-based high-entropy perovskite oxides relaxor ferroelectrics
Scientific ReportsDifferent combinations of monovalent and trivalent A-cations in high-entropy perovskite oxides (HEPOs) were investigated. The multicomponent (A′0.2A″0.2Ba0.2Sr0.2Ca0.2)TiO3 (A′ = Na+, K+, A″ = Bi3+, La3+) perovskite compounds were successfully ...
Ketkaeo Bunpang +3 more
doaj +1 more source
Comparison of polarization switching in ferroelectric TGS and relaxor SBN crystals
Condensed Matter Physics, 2013 The comparative experimental analysis of polarization reversal kinetics in conventional homogeneous triglycine sulfate (NH2 CH2 COOH)3 ˙ H2SO4; TGS) and relaxor strontium barium niobate (Sr0.61Ba0.39Nb2O6; SBN) crystals have been performed in a broad ...
K. Matyjasek, M. Orłowski
doaj +1 more source
Debye’s temperature and heat capacity for Sr0.15Ba0.85Bi2Nb2O9 relaxor ferroelectric ceramic [PDF]
Journal of Advanced Dielectrics, 2016 A lead-free relaxor ferroelectric, Sr0.15Ba0.85Bi2Nb2O9, was synthesized via solid-state reaction and the temperature-dependence of the heat capacity was measured in a wide temperature range.
A. Peláiz-Barranco +4 more
doaj +1 more source
First-Principles Studies of Local Order in Relaxor Ferroelectrics
, 1998 A key to optimizing the growth of the new single-crystal relaxor ferroelectrics is resolving basic questions concerning their structural properties and energetics.
Krakauer, Henry, Wensell, Mark
core +1 more source