Results 21 to 30 of about 3,184 (248)
Effect of sintering temperature on the dielectric, ferroelectric and energy storage properties of SnO2-doped Bi0.5(Na0.8K0.2)0.5TiO3 lead-free ceramics [PDF]
Journal of Advanced Dielectrics, 2020 Sintered lead-free Bi0.5(Na0.8K0.2)0.5(Ti0.96Sn0.04)O3 ceramics (BNKTS) have been fabricated via a solid-state reaction. The effect of sintering temperature on the structural, morphological, dielectric, ferroelectric and energy storage properties of ...
Nguyen Truong-Tho, Le Dai Vuong
doaj +1 more source
Eu-doped K0.5Na0.5NbO3-(Ba,Sr)TiO3: A novel lead-free luminescent ferroelectric transparent ceramic with reversible photochromism [PDF]
Journal of Advanced Dielectrics, 2019 Photochromic (PC) luminescent ferroelectric materials have aroused great interest because of their potential applications in optical information memories, optical switches and bio-imaging. However, those materials are basically opaque.
Jinfeng Lin +4 more
doaj +1 more source
Dielectric behaviour of (Ba0.77Ca0.23)(Ti0.98Dy0.02)O3 ceramics [PDF]
Processing and Application of Ceramics, 2015 In this study, BaTiO3 is modified with Ca2+ and in addition doped with Dy3+ at the B site lattice. The main idea is to search for new lead-free ferroelectric material and improve their properties.
Abdul Moquim, Manas R. Panigrahi
doaj +1 more source
Ordered coalescence of nano-crystals in alkaline niobate ceramics with high remanent polarization
Journal 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
Frontiers 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
Journal 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
Hot-pressed transparent PLZT ceramics from low cost chemical processing
Materials 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
Advanced Functional Materials, EarlyView.We use scanning nitrogen vacancy magnetometry to directly image the weak in‐plane magnetic moments in mixed phase BiFeO3 at the nanoscale and quantify the local magnetic moments to be 18.8±2.0 μB/nm2 in the rhombohedral‐like phase and 1.5±0.6 μB/nm2 in the well‐known non‐magnetic tetragonal‐like phase.
Lei Wang +14 more
wiley +1 more source
Dielectric Anisotropy in Partially Grain-Oriented Bi2VO5.5 Ceramics
Active and Passive Electronic Components, 1995 Ceramics obtained from quenching melts of prereacted polycrystalline Bi2V5.5 exhibit grain orientation (~ 55%). Microstructural studies carried out using scanning electron microscopy (SEM) on subsequently annealed ceramics show ferroelectric domains ...
K. V. R. Prasad, K. B. R. Varma
doaj +1 more source
Glissile Interphase Boundaries Enable Collective Phase Switching in Epitaxial Polar Oxides
Advanced Functional Materials, EarlyView.A triple point is identified in the phase diagram of low‐symmetry epitaxial BiFeO3 thin film along with an extended regime of phase competition associated with a flattened energy landscape. The electromechanical response is shown to be governed by correlated interphase‐boundary motion, including scale‐free avalanche dynamics characteristic of systems ...
Mohammad Moein Seyfouri +11 more
wiley +1 more source