Results 31 to 40 of about 22,359 (230)

The electric field-induced antiferroelectric to ferroelectric phase transition in some (Pb,La)Zr0.55Ti0.45O3 ceramics [PDF]

open access: yes, 1976
Lanthanum substituted lead zirconate-titanate (PLZT) ceramics of composition 11.1/55/45 have been studied by measuring high electric field properties. Dc bias, dielectric and P-E hysteresis loop measurements have been employed to construct an E (electric
Burggraaf, A.J.   +2 more
core   +2 more sources

Ordered coalescence of nano-crystals in alkaline niobate ceramics with high remanent polarization

open access: yesJournal of Materiomics, 2017
Lead-free alkali niobates Na0.5K0.5NbO3 (NKN) ceramics, with significantly enhanced ferroelectric remanent polarization (Pr), were prepared using Spark Plasma Sintering (SPS).
Zhijian Shen   +5 more
doaj   +1 more source

Crystal Structure, Phase Transitions and Photoferroelectric Properties of KNbO3-Based Lead-Free Ferroelectric Ceramics: A Brief Review

open access: yesFrontiers in Materials, 2020
Ferroelectric KNbO3 (KN) ceramics were first fabricated in the 1950s, however, their use in commercial technical applications has been hampered by inherently challenging processing difficulties. In the early 1990s, the interest in KN ceramics was revived
Dawei Wang   +5 more
doaj   +1 more source

Ferroelectric and Incipient Ferroelectric Properties of a Novel Sr_(9-x)PbxCe2Ti2O36 (x=0-9) Ceramic System

open access: yes, 2008
Sr_(9-x)PbxCe2Ti12O36 system is derived from the perovskite SrTiO3 and its chemical formula can be written as (Sr_(1-y)Pby)0.75Ce0.167TiO3. We investigated dielectric response of Sr_(9-x)PbxCe2Ti12O36 ceramics (x = 0-9) between 100 Hz and 100 THz at ...
Barrett J. H.   +29 more
core   +1 more source

Nanotexture influence of BaTiO3 particles on piezoelectric behaviour of PA 11/BaTiO3 nanocomposites [PDF]

open access: yes, 2010
The piezoelectric activity of a hybrid ferroelectric nanocomposite, i.e. polyamide 11/barium titanate (BT), has been investigated for different loadings of BT particles.
Capsal, J.-F.   +5 more
core   +1 more source

Absence of ferroelectricity in BiMnO3 ceramics

open access: yes, 2012
We performed factor-group analysis of all phonons in possible monoclinic C2/c and C2 structures of BiMnO3 and compared it with our experimental infrared and Raman spectra.
Belik, A. A.   +6 more
core   +1 more source

B-site non-stoichiometric (Pb0.97La0.02)(Zr0.95Ti0.05)O3 antiferroelectric ceramics for energy storage

open access: yesJournal of Asian Ceramic Societies, 2018
Non-stoichiometric (Pb0.97La0.02)(Zr0.95Ti0.05)1+yO3 (y = −0.03, −0.01, 0.01 and 0.03) antiferroelectric ceramics were successfully prepared via a solid-state reaction route.
Zhong-Hua Niu   +4 more
doaj   +1 more source

Stabilization of Polar Nano Regions in Pb-free ferroelectrics

open access: yes, 2017
Formation of polar nano regions through solid-solution additions are known to enhance significantly the functional properties of ferroelectric materials.
Abernathy, D. L.,   +10 more
core   +1 more source

Direct measurement of electrocaloric effect in lead-free Ba(SnxTi1-x)O3 ceramics [PDF]

open access: yes, 2017
In this study, we report on investigation of the electrocaloric (EC) effect in lead-free Ba(SnxTi1-x)O3 (BSnT) ceramics with compositions in the range of 0.08 ≤ x ≤ 0.15 by the direct measurement method using a differential scanning calorimeter.
Dkhil, Brahim   +6 more
core   +4 more sources

Hot-pressed transparent PLZT ceramics from low cost chemical processing

open access: yesMaterials Research, 2001
Lanthanum-modified lead zirconate titanate (PLZT) ceramics were obtained with high transmittance in the visible range by a combination of an inexpensive chemical processing and hot pressing.
I.A. Santos   +5 more
doaj   +1 more source

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