Functional properties of donor- and acceptor-co-doped high dielectric constant zinc oxide ceramics

2019 ◽  
Vol 21 (18) ◽  
pp. 9456-9464 ◽  
Author(s):  
Raphael Lucas de Sousa e Silva ◽  
Prasun Banerjee ◽  
Adolfo Franco Júnior
Keyword(s):  
Dielectric Constant ◽  
Functional Properties ◽  
High Dielectric Constant ◽  
Oxide Ceramics ◽  
Donor And Acceptor ◽  
Solid State Sintering ◽  
High Dielectric ◽  
Sintering Method ◽  
Zno Ceramics ◽  
Co Doped

In this work we investigated the functional properties of a set of acceptor (Cu1+) and donor (Gd3+) codoped wurtzite ZnO ceramics Zn(1−x)(CuzGdy)xO for x = 0.01 synthesized by the pressure-less solid state sintering method.

X7R type lead complex perovskite ferroelectric ceramics with high dielectric constant

1998 ◽  
Vol 13 (2) ◽  
pp. 253-256 ◽  
Author(s):  
Lijian Ruan ◽  
Longtu Li ◽  
Zhilun Gui
Keyword(s):  
Dielectric Constant ◽  
High Dielectric Constant ◽  
Temperature Stability ◽  
Ferroelectric Ceramics ◽  
Complex Perovskite ◽  
Two Phase ◽  
Dielectric Ceramics ◽  
High Dielectric ◽  
Lead Complex ◽  
Sintering Method

A new X7R type dielectric ceramics for the PMN-BT-PT system with a high dielectric constant (4832) and a low firing temperature (1100–1130 °C) was prepared by the mixed-sintering method. The results of XRD, SEM, EDAX, and dielectric measurements showed that the dielectric ceramics is a two-phase composite with the high dielectric constant originating from the ferroelectric relaxor, and the temperature stability of the dielectric properties from two-phase coexistence.

High dielectric constant and high-Q in microwave ceramics of SrTiO3 co-doped with aluminum and niobium

2018 ◽  
Vol 101 (5) ◽  
pp. 1835-1840 ◽  
Author(s):  
Siliang Chen ◽  
Lingxia Li ◽  
Shihui Yu ◽  
Haoran Zheng ◽  
Zheng Sun
Keyword(s):  
Dielectric Constant ◽  
High Dielectric Constant ◽  
Microwave Ceramics ◽  
High Q ◽  
High Dielectric ◽  
Co Doped

High dielectric constant in Al-doped ZnO ceramics using high-pressure treated powders

2016 ◽  
Vol 657 ◽  
pp. 90-94 ◽  
Author(s):  
Xuhai Li ◽  
Xiuxia Cao ◽  
Liang Xu ◽  
Lixin Liu ◽  
Yuan Wang ◽  
...  
Keyword(s):  
Dielectric Constant ◽  
High Pressure ◽  
High Dielectric Constant ◽  
Doped Zno ◽  
High Dielectric ◽  
Zno Ceramics

High remnant polarization, high dielectric constant and impedance performance of Nb/In Co-doped Bi0.49La0.01Na0.49Li0.01TiO3- ceramics

2018 ◽  
Vol 44 (6) ◽  
pp. 6843-6850 ◽  
Author(s):  
Mohsin Ali Marwat ◽  
Bing Xie ◽  
Malik Ashtar ◽  
Yiwei Zhu ◽  
Penyuan Fan ◽  
...  
Keyword(s):  
Dielectric Constant ◽  
Remnant Polarization ◽  
High Dielectric Constant ◽  
High Dielectric ◽  
Co Doped

High dielectric constant and low dielectric loss of Y/Mn co-doped BST@ZrO2/PVDF composite films for wearable capacitor applications

2020 ◽  
pp. 2151004
Author(s):  
Jingru Zhang ◽  
Ruoxin Xu ◽  
Xiao Han ◽  
Zhiang Zhang ◽  
Lili Zhao ◽  
...  
Keyword(s):  
Dielectric Constant ◽  
Dielectric Loss ◽  
Polyvinylidene Fluoride ◽  
High Dielectric Constant ◽  
Composite Films ◽  
Temperature Stability ◽  
Co Doping ◽  
Low Dielectric ◽  
High Dielectric ◽  
Co Doped

In order to develop infinite capacitive materials with high dielectric constant and low dielectric loss, influences of Y/Mn co-doping and ZrO2 coating on the dielectric properties of barium strontium tinanate/polyvinylidene fluoride (BST/PVDF) composite films were systematically investigated with fixing Y concentration as 0.3 at.% and varying Mn concentration from 1 at.% to 4 at.%. The experimental results show that the dielectric constant of BST@ZrO2/PVDF composite increases by 50% relative to BST/PVDF and the dielectric loss is evidently depressed. In comparison with BST@ZrO2/PVDF sample, furthermore, the dielectric constant of Y/Mn co-doped BST@ZrO2/PVDF samples increases by about 60% and the dielectric loss further reduces at 1 kHz. The promoted dielectric performances of composite originate from the space charge separation formed by Y/Mn co-doping and the limitation of electronic mobility by coated ZrO2. Y/Mn co-doped BST@ZrO2/PVDF composite film with 3% Mn has a dielectric constant of 37.9, a dielectric loss of 0.0117, superior dielectric temperature stability (3.1% from -5[Formula: see text]C to 45[Formula: see text]C at 1 kHz), and a discharged energy density of 5.67 J/cm3 at 600 kV/cm. The simultaneous optimization of dielectric constant and dielectric loss of BST/PVDF composite is realized in this experiment. The superior dielectric temperature stability suggests the application potential of Y/Mn co-doped BST@ZrO2/PVDF as wearable capacitors.

Enhanced performance of supercapacitors by constructing a “mini parallel-plate capacitor” in an electrode with high dielectric constant materials

2020 ◽  
Vol 8 (32) ◽  
pp. 16661-16668
Author(s):  
Huayao Tu ◽  
Shouzhi Wang ◽  
Hehe Jiang ◽  
Zhenyan Liang ◽  
Dong Shi ◽  
...  
Keyword(s):  
Dielectric Constant ◽  
Carbon Fiber ◽  
Parallel Plate ◽  
Sandwich Structure ◽  
High Dielectric Constant ◽  
Parallel Plate Capacitor ◽  
Plate Capacitor ◽  
Fiber Metal ◽  
High Dielectric ◽  
Mini Plate

The carbon fiber/metal oxide/metal oxynitride layer sandwich structure is constructed in the electrode to form a mini-plate capacitor. High dielectric constant metal oxides act as dielectric to increase their capacitance.

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