Disclosed is an SrTiO 3 -based grain boundary barrier layer capacitor which is superb in dielectric constant and temperature characteristics. It is prepared by infiltrating a liquid-phase oxide mixture into a donor-doped SrTiO 3 matrix to form second-phase dielectric layers at the grain boundaries of the matrix. The liquid-phase oxide mixture comprises CaO and BaO in a particular molar ratio.
Customer ServiceA new model is developed to explain the frequency response of the impedance of grain-boundary barrier layer (GBBL) capacitors. This model takes into consideration the dipole polarization
Customer ServiceReverse boundary layer capacitor (RBLC) configuration model, where the grain boundary has a higher electrical conductivity than the grain, is proposed in glass/ceramic composites for dielectric energy storage applications. By introducing glass
Customer Service3 天之前· [25-28] The accumulation of vacancies leads to the formation of a negatively charged space charge layer (SCL) adjacent to the interface, the understanding of this behavior is
Customer ServiceDonor-doped (Sr, Ca)TiO3 ceramics, either oxidized or infiltrated by Bi2O3 and Bi2O3-PbO molten mixtures, have been studied using a transmission electron microscope equipped with EDX facilities. Grain boundary morphologies of these different materials are investigated. In oxidized samples, grain surfaces exhibit a chemical contrast, interpreted
Customer ServiceRequest PDF | Grain-orientation-engineered multilayer ceramic capacitors for energy storage applications | Dielectric ceramics are highly desired for electronic systems owing to their fast
Customer ServiceA new technique to process ceramic/polymer grain boundary capacitors has been developed and demonstrated using BaTiO 3 as the ceramic conducting phase and LaRC-TPI
Customer ServiceHere, we propose a strategy to increase the breakdown electric field and thus enhance the energy storage density of polycrystalline ceramics by controlling grain orientation.
Customer ServiceGrain boundary layer capacitors are processed from Ba (Ti 1 − x Sn x )O 3 solid solutions (0 < × < 0.25), doped simultaneously with donor and acceptor impurities. The starting powders are prepared by the hydrothermal method.
Customer ServiceCeramic capacitors show an attractive potential for application in integrated circuits due to their superior dielectric properties. Herein, CdCu 3 (In 0.5 Ta 0.5) x Ti 4-x O 12
Customer ServiceReverse boundary layer capacitor model in glass/ceramic composites for energy storage applications Xiaoyong Wei,1,2,a) Haixue Yan,1 Tong Wang,2 Qingyuan Hu,2 G. Viola,1,3 Salvatore Grasso,1,3 Qinghui Jiang,1 Li Jin,2 Zhuo Xu,2 and Michael J. Reece1,3 1School of Engineering and Material Science, Queen Mary University of London, London E1 4NS, United
Customer ServiceElectrical properties of BaTiO 3-based capacitors are investigated. A new model is developed to explain the frequency response of the impedance of grain-boundary barrier layer (GBBL) capacitors. This model takes into consideration the dipole polarization effect and provides a simple and effective approach to evaluate the performance of GBBL
Customer ServiceDonor-doped (Sr, Ca)TiO3 ceramics, either oxidized or infiltrated by Bi2O3 and Bi2O3-PbO molten mixtures, have been studied using a transmission electron microscope equipped with
Customer ServiceHere, we propose a strategy to increase the breakdown electric field and thus enhance the energy storage density of polycrystalline ceramics by controlling grain orientation.
Customer ServiceIn the insulation process of SrTiO3grain boundary layer capacitor ceramics, the prevalent practice involves the use of insulating oxides predominantly containing PbO.
Customer ServiceHydrogen-induced degradation in SrTiO 3-based grain boundary barrier layer ceramic capacitors was studied through electrochemical hydrogen charging, in which the capacitors were placed in 0.01 M NaOH solution with hydrogen deposited on their electrodes from the electrolysis of water.The properties of the capacitors were greatly degraded after 0.5 h of
Customer ServiceConcentration of Rare-earth additives around grain boundary is the most important factor for improving HALT result. Design of Grain Boundary Reliability is directly related to the integrity of the grain boundaries in the ceramic layers. 9 APEC 2011: Ceramic Capacitor Update Improved Additive Dispersion Superior dispersion of coating materials in green sheet The traditional
Customer ServiceCeramic capacitors show an attractive potential for application in integrated circuits due to their superior dielectric properties. Herein, CdCu 3 (In 0.5 Ta 0.5) x Ti 4-x O 12 ceramics with superior dielectric properties were prepared
Customer ServiceA new model is developed to explain the frequency response of the impedance of grain-boundary barrier layer (GBBL) capacitors. This model takes into consideration the dipole polarization effect and provides a simple and effective approach to evaluate the performance of GBBL capacitors with various dopants and sintering in different atmospheres
Customer Service3 天之前· [25-28] The accumulation of vacancies leads to the formation of a negatively charged space charge layer (SCL) adjacent to the interface, the understanding of this behavior is highly relevant for a wide variety of functional ceramics, where control over grain boundary properties is essential in harnessing their optimal performance. 4 Experimental Section Starting Powders
Customer ServiceReverse boundary layer capacitor (RBLC) configuration model, where the grain boundary has a higher electrical conductivity than the grain, is proposed in glass/ceramic composites for dielectric energy storage applications. By introducing glass additives as grain boundaries with electrical conductivity higher than ceramic grains, the steady electric field
Customer Serviceextremely high grain boundary capacitance −110−8 Fcm and effective permittivity values 280 000 at 300 K for large grained 100–300 m ceramics, providing further
Customer ServiceReverse boundary layer capacitor (RBLC) configuration model, where the grain boundary has a higher electrical conductivity than the grain, is proposed in glass/ceramic composites for dielectric energy storage applications. By introducing glass additives as grain boundaries with electrical conductivity higher than ceramic grains, the steady electric field
Customer ServiceThis research provides a feasible approach to systematically explore the semi-conducting and insulating processes for SrTiO3 grain boundary ceramic capacitors, as well as to develop a
Customer ServiceA new technique to process ceramic/polymer grain boundary capacitors has been developed and demonstrated using BaTiO 3 as the ceramic conducting phase and LaRC-TPI polymer as the insulating phase. The particles were characterized by transmission electron microscopy and the dielectric properties of the capacitors were measured at room
Customer ServiceThis research provides a feasible approach to systematically explore the semi-conducting and insulating processes for SrTiO3 grain boundary ceramic capacitors, as well as to develop a low-lead oxidant coating. SrTiO3 ceramics, two-step sintering, dielectric properties, oxidant, insulation resistance value.
Customer ServiceThrough equivalent circuit analysis and XRD, SEM, we discussed the mechanism that grain boundaries effect and characteristics affected ceramic performance, which made the dielectric constant of grain boundary layer ceramic substrate for single layer chip capacitor are adjustable (1000050000), and the capacitance change rate was low(±4.7%±22%
Customer ServiceA grain boundary capacitor is a particulate composite made of discrete conducting grains surrounded by a continuous insulating layer. When an electric field is applied to the grain boundary capacitor, each pair of adjacent conducting grains separated by an insulating layer forms a miniature capacitor.
For the multilayer ceramic capacitors (MLCCs) used for energy storage, the applied electric field is quite high, in the range of ~20–60 MV m −1, where the induced polarization is greater than 0.6 C m −2.
The energy density of dielectric ceramic capacitors is limited by low breakdown fields. Here, by considering the anisotropy of electrostriction in perovskites, it is shown that <111>-textured Na0.5Bi0.5TiO3–Sr0.7Bi0.2TiO3 ceramics can sustain higher electrical fields and achieve an energy density of 21.5 J cm−3.
The work was conceived and designed by J.L., S.Z. and F.L.; J.L. fabricated the capacitors and performed microstructure and dielectric experiments; Z.S., X.C. and Q.L. performed finite-element simulations; and S.Y., W.Z., M.W., L.W., Y.L., Q.K. and Y.C. assisted in the fabrication of templates and textured ceramics.
Electron backscatter diffraction (EBSD) experiments further confirm that the <111>-oriented grains are clearly increased in the textured sample compared to the nontextured counterpart, as shown in Fig. 3e,f. Fig. 3: Texture quality of NBT-SBT multilayer ceramics.
A new model is developed to explain the frequency response of the impedance of grain-boundary barrier layer (GBBL) capacitors. This model takes into consideration the dipole polarization effect and provides a simple and effective approach to evaluate the performance of GBBL capacitors with various dopants and sintering in different atmospheres.
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