Supercritical Relaxor Nanograined Ferroelectrics for Ultrahigh‐Energy‐Storage Capacitors
Sign Up to like & getrecommendations! Published in 2022 at "Advanced Materials"
DOI: 10.1002/adma.202204356
Abstract: Supercritical relaxor nanograined ferroelectrics are demonstrated for high‐performance dielectric capacitors, showing record‐high overall properties of energy density ≈13.1 J cm−3 and field‐insensitive efficiency ≈90% at ≈74 kV mm−1 and superior charge–discharge performances of high power… read more here.
Keywords: nanograined ferroelectrics; energy; relaxor; relaxor nanograined ... See more keywords
Optimization of energy storage density in relaxor (K, Na, Bi)NbO3 ceramics
Sign Up to like & getrecommendations! Published in 2017 at "Journal of Materials Science: Materials in Electronics"
DOI: 10.1007/s10854-017-7521-2
Abstract: Energy storage properties have been widely investigated in lead-free relaxor ferroelectric ceramics due to high polarization saturation (Ps) and low remnant polarization (Pr). Among these lead-free relaxor ferroelectric ones, the investigation of energy storage in… read more here.
Keywords: storage density; relaxor; energy storage; energy ... See more keywords
Simultaneously achieved high energy-storage density and efficiency in BaTiO3–Bi(Ni2/3Ta1/3)O3 lead-free relaxor ferroelectrics
Sign Up to like & getrecommendations! Published in 2020 at "Journal of Materials Science: Materials in Electronics"
DOI: 10.1007/s10854-020-04802-9
Abstract: The development of Pb-free energy-storage materials with excellent stability has attracted attention in recent times due to the energy and environmental crises. In this study, a series of (1 − x)BaTiO3–xBi(Ni2/3Ta1/3)O3 [(1 − x)BT–xBNT, x = 0.08,… read more here.
Keywords: energy; storage density; relaxor; energy storage ... See more keywords
Probing the in-time piezoelectric responses and depolarization behaviors related to ferroelectric-relaxor transition in BiFeO3–BaTiO3 ceramics by in-situ process
Sign Up to like & getrecommendations! Published in 2020 at "Journal of Materials Science: Materials in Electronics"
DOI: 10.1007/s10854-020-04892-5
Abstract: Phase transition from a ferroelectric to relaxor phase at high temperature plays a crucial role on thermal depolarization process for piezoceramics. However, so far very few have been reported concerning the effect because the thermally… read more here.
Keywords: relaxor transition; temperature; transition; ferroelectric relaxor ... See more keywords
Effects of frequency, temperature, and dc bias electric field on the dielectric properties of methylammonium lead iodide from the perspective of a relaxor-like ferroelectric
Sign Up to like & getrecommendations! Published in 2021 at "Acta Materialia"
DOI: 10.1016/j.actamat.2021.117235
Abstract: Abstract This work reports dielectric properties of methylammonium lead iodide as a function of frequency, temperature, and dc bias electric field studied in terms of grain and grain boundary contributions. These results were analyzed from… read more here.
Keywords: field; bias electric; dielectric properties; electric field ... See more keywords
A coexistence of multi-relaxor states in 0.5BiFeO3–0.5BaTiO3
Sign Up to like & getrecommendations! Published in 2017 at "Ceramics International"
DOI: 10.1016/j.ceramint.2017.09.030
Abstract: Abstract Here we report our investigations on a pseudo-cubic 0.5BiFeO 3 –0.5BaTiO 3 ceramic (0.5BF–0.5BT) in which ferroelectric relaxor and antiferromagnetic and magnetic relaxor orders coexist. The temperature dependence of ferroelectric hysteresis loops and dielectric… read more here.
Keywords: relaxor states; states 5bifeo3; multi relaxor; coexistence multi ... See more keywords
High electromechanical strain properties by the existence of nonergodicity in LiNbO3–modified Bi1/2Na1/2TiO3–SrTiO3 relaxor ceramics
Sign Up to like & getrecommendations! Published in 2018 at "Ceramics International"
DOI: 10.1016/j.ceramint.2018.08.156
Abstract: Abstract This study investigated the effect of LiNbO3 modification on the dielectric, ferroelectric and electromechanical strain properties of Bi1/2Na1/2TiO3–SrTiO3 (BNT–ST) lead–free relaxor ceramics. The sintering temperature for lead–free BNT–ST relaxor ceramics was slightly decreased from… read more here.
Keywords: electromechanical strain; temperature; relaxor ceramics; strain properties ... See more keywords
Structure, dielectric and relaxor properties in lead-free ST-NBT ceramics for high energy storage applications
Sign Up to like & getrecommendations! Published in 2017 at "Journal of Alloys and Compounds"
DOI: 10.1016/j.jallcom.2017.04.023
Abstract: Abstract (1-x)SrTiO3-x(Na0.5Bi0.5)TiO3 ((1-x)ST-xNBT) ceramics have been prepared by solid-state route and their structure, electric and energy storage properties have been investigated. Dielectric anomalies at Tm and T′m show strong frequency dispersion as the typical relaxor… read more here.
Keywords: xnbt ceramics; energy; relaxor; energy storage ... See more keywords
Novel barium titanate based ferroelectric relaxor ceramics with superior charge-discharge performance
Sign Up to like & getrecommendations! Published in 2018 at "Journal of the European Ceramic Society"
DOI: 10.1016/j.jeurceramsoc.2018.06.038
Abstract: Abstract Lead-free 0.9BaTiO3-0.1(Bi0.9Na0.1)(In0.8Zr0.2)O3 (0.9BT-0.1BNIZ) ferroelectric relaxor ceramic was synthesized by solid-state reaction method. A dense microstructure and fine grain size was obtained with addition of BNIZ content. The dielectric behaviors indicated the dominance of ergodic… read more here.
Keywords: charge discharge; ferroelectric relaxor; superior charge; relaxor ... See more keywords
Simultaneously optimizing both energy storage density and efficiency in a novel lead-free relaxor antiferroelectrics
Sign Up to like & getrecommendations! Published in 2020 at "Journal of The European Ceramic Society"
DOI: 10.1016/j.jeurceramsoc.2020.03.070
Abstract: Abstract Dielectric capacitors with both high energy density and efficiency are highly demanded in pulsed power systems. Relaxor antiferroelectrics have attracted much attention due to their unique advantages in optimizing both properties of a dielectric… read more here.
Keywords: energy; relaxor; density; energy storage ... See more keywords
Relaxor behavior of potassium sodium niobate ceramics by domain evolution
Sign Up to like & getrecommendations! Published in 2021 at "Journal of The European Ceramic Society"
DOI: 10.1016/j.jeurceramsoc.2020.08.040
Abstract: Abstract Relaxor behavior is proved to be responsible for high piezoelectricity in piezoelectric materials due to the promoted polarization rotation, and an ultrahigh piezoelectricity can be also induced in potassium sodium niobate [(K,Na)NbO3, KNN]-based ceramics… read more here.
Keywords: relaxor behavior; domain evolution; relaxor;