Temperature-stable dielectric ceramics in Ba4Nd2Ti4Ta6O30/(La0.1Bi0.9)2Ti2O7 biphase system

1999 ◽  
Vol 14 (8) ◽  
pp. 3375-3378 ◽  
Author(s):  
J. Wang ◽  
X. M. Chen ◽  
J. S. Yang
Keyword(s):  
Dielectric Constant ◽  
Dielectric Loss ◽  
Temperature Coefficient ◽  
High Dielectric Constant ◽  
Zero Temperature ◽  
Dielectric Ceramics ◽  
High Dielectric

Biphase dielectric ceramics in the system of (1 − x)Ba4Nd2Ti4Ta6O30/ x(La0.1Bi0.9) 2Ti2O7 were investigated to obtain a near-zero temperature coefficient of dielectric constant. With the increase in x, the dielectric constant increased slightly, and the temperature coefficient changed from negative to positive. High dielectric constant of ε = 143 and good temperature stabibility (τ ε = −48 ppm/ °C) were achieved in a composition of x = 0.45, and the increased dielectric loss became the new problem.

Dielectric ceramics in the BaO–Sm2O3–TiO2–Ta2O5 quaternary system

2000 ◽  
Vol 15 (1) ◽  
pp. 125-129 ◽  
Author(s):  
X. M. Chen ◽  
Z. Y. Xu ◽  
J. Li
Keyword(s):  
Dielectric Constant ◽  
Temperature Coefficient ◽  
Quaternary System ◽  
High Dielectric Constant ◽  
Tungsten Bronze ◽  
Complex Phase ◽  
Low Dielectric ◽  
Unknown Phase ◽  
Dielectric Ceramics ◽  
High Dielectric

Dielectric ceramics in the BaO–Sm2O3–TiO2–Ta2O5 quaternary system were prepared and characterized for five typical compositions: BaSm5Ti7Ta3O30, Ba2Sm4Ti6Ta4O30, Ba3Sm3Ti5Ta5O30, Ba4Sm2Ti4Ta6O30, and Ba5SmTi3Ta7O30. The latter three compositions tended to form the tungsten–bronze phase, and the ceramics based on these compositions had a high dielectric constant (134–175) and a low dielectric loss (on the order of 10−3) but a larger temperature coefficient of the dielectric constant. Meanwhile, the former two compositions generally had a more complex phase constitution, containing the tungsten–bronze phase combined with some unknown phase, and a relatively small temperature coefficient of the dielectric constant in the temperature range of 20 to 85 °C could be achieved in these two compositions.

Skin–core structured fluorinated MWCNTs: a nanofiller towards a broadband dielectric material with a high dielectric constant and low dielectric loss

2018 ◽  
Vol 6 (9) ◽  
pp. 2370-2378 ◽  
Author(s):  
Yang Liu ◽  
Cheng Zhang ◽  
Benyuan Huang ◽  
Xu Wang ◽  
Yulong Li ◽  
...  
Keyword(s):  
Dielectric Constant ◽  
Dielectric Loss ◽  
High Dielectric Constant ◽  
Dielectric Material ◽  
Epoxy Composite ◽  
Low Dielectric ◽  
High Dielectric

A novel skin–core structured fluorinated MWCNT nanofiller was prepared to fabricate epoxy composite with broadband high dielectric constant and low dielectric loss.

scholarly journals Crown ether-containing polyimides with high dielectric constant

RSC Advances ◽  
2017 ◽  
Vol 7 (38) ◽  
pp. 23309-23312 ◽  
Author(s):  
Ting Yang ◽  
Wenhui Xu ◽  
Xinwen Peng ◽  
Haoqing Hou
Keyword(s):  
Dielectric Constant ◽  
Dielectric Loss ◽  
Crown Ether ◽  
High Dielectric Constant ◽  
Low Dielectric ◽  
High Dielectric

Crown ether-containing polyimides possess high dielectric constant and low dielectric loss, without sacrificing other properties.

Fluoro-polymer functionalized graphene for flexible ferroelectric polymer-based high-k nanocomposites with suppressed dielectric loss and low percolation threshold

Nanoscale ◽  
2014 ◽  
Vol 6 (24) ◽  
pp. 14740-14753 ◽  
Author(s):  
Ke Yang ◽  
Xingyi Huang ◽  
Lijun Fang ◽  
Jinliang He ◽  
Pingkai Jiang
Keyword(s):  
Dielectric Constant ◽  
Dielectric Loss ◽  
Percolation Threshold ◽  
High Dielectric Constant ◽  
Functionalized Graphene ◽  
Ferroelectric Polymer ◽  
Flexible Polymer ◽  
High K ◽  
High Dielectric

Fluoro-polymer functionalized graphene was synthesized for flexible polymer-based nanodielectrics. The resulting nanocomposites exhibit high dielectric constant, suppressed dielectric loss and low percolation threshold.

Improvement of quality factor of SrTiO 3 dielectric ceramics with high dielectric constant using Sm 2 O 3

2019 ◽  
Vol 102 (7) ◽  
pp. 3849-3853 ◽  
Author(s):  
Ting Luo ◽  
Xinxuan Shan ◽  
Jingwei Zhao ◽  
Hengheng Feng ◽  
Qi Zhang ◽  
...  
Keyword(s):  
Dielectric Constant ◽  
Quality Factor ◽  
High Dielectric Constant ◽  
Dielectric Ceramics ◽  
High Dielectric

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.

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