Structural changes underlying the diffuse dielectric response in AgNbO3
Structural changes underlying the diffuse dielectric response in AgNbO 3 Igor Levin, 1Victor Krayzman, Joseph C. Woicik, Jenia Karapetrova,2 Thomas Proffen,3 Matthew G. Tucker,4 and Ian M. Reaney5 1Ceramics Division, National Institute of Standards and Technology, Gaithersburg, Maryland 20899, USA 2Advanced Photon Source, Argonne National Laboratory, …
Smart sökningLead-free antiferroelectric AgNbO3: Phase ...
Recently, lead-free antiferroelectric AgNbO3 has emerged as a promising candidate to substitute conventional lead-based antiferroelectrics (such as PbZrO3) in energy storage applications. The phase transition dynamics of AgNbO3 is driven by a complex sequence of oxygen octahedron tilting orders in addition to cation displacement, which can be ...
Smart sökningHigh energy density and energy efficiency in AgNbO3-based …
AgNbO 3 ceramics exhibit a complex phase transformation with increasing temperature, transitioning from the ferrielectric (FIE) phase (M 1 phase) to the antiferroelectric …
Smart sökningHigh energy density and energy efficiency in AgNbO3-based …
AgNbO 3 ceramics exhibit a complex phase transformation with increasing temperature, transitioning from the ferrielectric (FIE) phase (M 1 phase) to the antiferroelectric (AFE) phase (M 2 and M 3 phases), and ultimately to the paraelectric (PE) phase (O and T phases) [24] has been reported that phase engineering is an effective approach to …
Smart sökningLead-free antiferroelectric niobates AgNbO3 and …
Lead-free silver niobate (AgNbO3) and sodium niobate (NaNbO3) antiferroelectric ceramics have attracted intensive interest as promising candidates for environmentally frie Journal of Materials Chemistry A Recent Review Articles
Smart sökningFerroelectric and Antiferroelectric Properties of AgNbO3 Films ...
AgNbO3 and (Ag0.9Li0.1)NbO3 thin films were grown on a LaAlO3 (001) single crystal substrate by the PLD technique. A crystallographic analysis of the films showed on a high epitaxial relationship ...
Smart sökning(PDF) Relaxor Ferroelectric AgNbO3 Film Fabricated on
AgNbO3 films with few defects and small thickness exhibit high Eb, which helps to improve the energy storage performance. In this work, we successfully prepared AgNbO3 thin films on (110) SrTiO3 ...
Smart sökningSodium and Potassium Storage Behaviour in AgNbO3 …
Introduction. Given the increasing energy demands and the limitations in lithium supply, sodium and potassium ion chemistries are emerging as promising alternatives for rechargeable batteries. 1, 2 Their appeal lies in …
Smart sökningLead-free antiferroelectric niobates AgNbO 3 and NaNbO 3 for …
The polarized AgNbO3 synthesized at 170 ℃ exhibited outstanding piezo‐photocatalytic performance, and a degradation rate of 95% for RhB within 90 min and a high apparent rate constant of 0. ...
Smart sökningHeterovalent-doping-enabled atom-displacement fluctuation …
Nature Communications - AgNbO3 has a potential for high power capacitors due to its antiferroelectric characteristics. Here, the authors achieve multilayer capacitors with …
Smart sökningAgNbO3: A Lead-Free Material with Large Polarization and ...
For the AgNbO3–BaTiO3 solid solution we find two morphotropic phase boundaries at 12.5% and 37.5% AgNbO3 compositions with favorable piezoeletric properties and indications of high TC. View Show ...
Smart sökningAgNbO3: A lead-free material with large polarization and ...
Polarization measurements reveal that AgNbO3 has an extremely large polarization, which can reach a value of 52μC∕cm2 in polycrystals. Experiments also show that the large internal atom distortion in AgNbO3 is also strongly coupled to the electric field, indicating that high piezoelectric performance can be realized in AgNbO3 system. This finding opens the …
Smart sökning(PDF) Phase transition characteristics, electrical and optical ...
The AgNbO3 single crystals with the M phase exhibit the same domain structure. When the structure changes from M2 to M3, the contrast of the PLM images is darkened. Correspondingly, the ...
Smart sökningLead-free antiferroelectric niobates AgNbO3 and …
Antiferroelectric materials are attractive for energy storage applications and are becoming increasingly important for power electronics. Lead-free silver niobate (AgNbO3) and sodium niobate (NaNbO3) antiferroelectric ceramics have …
Smart sökningExcellent energy storage performance of Nd-modified lead-free …
Heterovalent-doping-enabled atom-displacement fluctuation leads to ultrahigh energy-storage density in AgNbO3-based multilayer capacitors
Smart sökningAgNbO3 antiferroelectric film with high energy storage ...
<p>Antiferroelectric materials with double hysteresis loops are attractive for energy storage applications, which are becoming increasingly important for power electronics nowadays. Among them, AgNbO<sub>3</sub> based lead-free ceramics have attracted intensive interest as one of promising environmental-friendly candidates. However, most of the AgNbO<sub>3</sub> …
Smart sökningEnergy storage performance of AgNbO 3 − x Bi 2 WO 6
AgNbO3-based antiferroelectric ceramics modified by bismuth tungstate (Bi2WO6) possess high energy storage density by adjusting the tolerance factor and reducing …
Smart sökningGrowth, Structure, and Electrical Properties of AgNbO3 ...
AgNbO3 (AN) lead-free antiferroelectric material has attracted great attention in recent years. However, little focus has been directed toward a single crystal that can provide more basic information. In this study, we successfully grew high-quality AN single crystals, using a flux method, with dimensions of 5 × 5 × 3 mm3. A systematic investigation into the crystal structure, …
Smart sökningFerroelectricity and Schottky Heterojunction Engineering in AgNbO3…
As an efficient and economical way of dealing with organic pollutants, piezo-photocatalysis has attracted great interest. In this work, we demonstrated that ferroelectricity and Schottky heterojunction engineering could significantly enhance the piezo-photocatalytic activity of AgNbO3. The poled 20 mol % K+ doped AgNbO3 disclosed its superior piezo-photocatalytic …
Smart sökningGreatly enhanced energy storage and discharge …
AgNbO3 lead-free antiferroelectric (AFE) material is one of the most promising candidates for fabricating dielectric capacitors due to its near-zero remnant polarization and good environmental friendliness.
Smart sökningStructural Investigation of AgNbO3 Phases Using X-ray and …
AgNbO3 ceramics have attracted progressively more attention to high power energy storage in dielectric capacitors because of complicated in a series of phase transitions. In this work, Ag1 ...
Smart sökningSilver stoichiometry engineering: an alternative way to improve …
AgNbO3 ceramics fabricated using a conventional solid-state reaction method under an O2 atmosphere show a characteristic anti-ferroelectric (AFE) double hysteresis loop at an electric field of ...
Smart sökningEnhanced temperature stability in AgNbO3 lead-free
La-doped AgNbO3 lead-free ceramics were fabricated by conventional solid-state reaction, the phase stability and energy storage properties were investigated. The temperature- and electric field ...
Smart sökningLead-free antiferroelectric AgNbO 3
AgNbO3 exhibits an antiferroelectric phase transition to the orthorhombic Pbcm phase at 626 K. At room temperature it exhibits ferroelectric behavior with a large spontaneous polarization. However ...
Smart sökningHigh pressure phase boundaries of AgNbO3
The external pressure is one of the essential parameters for regulating the structure and energy conversion properties of antiferroelectric AgNbO 3.For pure AgNbO 3, however, there has been still a blank of its real lattice structure under the stress field.Here, high-pressure lattice structures and phase transitions of AgNbO 3 have been explored by …
Smart sökningUltrahigh energy storage performance realized in AgNbO 3
AgNbO3-based materials have attracted extensive attention in energy storage due to their double hysteresis loops, but they suffer from low breakdown strength (Eb). AgNbO3 films with few defects ...
Smart sökningAgNbO3 antiferroelectric film with high energy storage …
The primary AFE materials for energy storage applications have been the La-doped Pb-based ceramics [7, [9], [10], [11]], in which a W rec up to 12.8 J/cm 3 has been …
Smart sökningHydrothermal synthesized AgNbO3 powders: Leading to greatly …
AgNbO3 ceramics fabricated using a conventional solid-state reaction method under an O2 atmosphere show a characteristic anti-ferroelectric (AFE) double hysteresis loop at an electric field of ...
Smart sökningAgNbO3-Based Multilayer Capacitors: Heterovalent …
The demand for miniaturization and integration in next-generation advanced high-/pulsed-power devices has resulted in a strong desire for dielectric capacitors with high energy storage capabilities. However, …
Smart sökningTemperature Evolution of the Crystal Structure of AgNbO3
AgNbO3 is an antiferroelectric (AFE) material with double hysteresis loop. Both the antiferroelectricity and ferroelectricity can be enhanced by doping. Herein, the ferroelectricity of AgNbO3 ...
Smart sökningAgNbO3 antiferroelectric film with high energy storage performance ...
The primary AFE materials for energy storage applications have been the La-doped Pb-based ceramics [7, [9], [10], [11]], in which a W rec up to 12.8 J/cm 3 has been obtained [11].However, the high toxicity of Pb-containing compounds continuously raises severe problems [12].Thus, the intensive researches have been performed on lead-free counterparts [13, 14].
Smart sökningEnhanced Piezo‐photocatalytic Performances of AgNbO3 …
The electron-hole separation of AgNbO3 photocatalysts can be carried out effectively under the synergistic effects of a light and piezoelectric field. The polarization engineering can effectively pro...
Smart sökningDielectric and Antiferroelectric Properties of AgNbO3 …
AgNbO3-based antiferroelectric films have attracted emerging attention in the field of dielectric energy storage and possess promising applications in photocatalysis and microwave devices.
Smart sökningEnhancing energy storage performance of AgNbO3-based
Dielectric ceramics are crucial materials in the preparation of high energy storage capacitors, where antiferroelectric ceramics have promising potential due to their large …
Smart sökningUltrahigh energy storage performance realized in AgNbO3-based ...
Among them, AgNbO3 (AN)-based ceramics have gained considerable attention due to their excellent energy storage performance. Herein, multiscale synergistic modulation is proposed to improve the ...
Smart sökningUltrahigh energy storage performance realized in AgNbO3-based …
<p>Antiferroelectric (AFE) materials are promising for the applications in advanced high-power electric and electronic devices. Among them, AgNbO<sub>3</sub> (AN)-based ceramics have …
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