Giant dielectric response and low dielectric loss in Al2O3 grafted CaCu3Ti4O12 ceramics

2015 ◽  
Vol 117 (9) ◽  
pp. 094103 ◽  
Author(s):  
A. Rajabtabar-Darvishi ◽  
R. Bayati ◽  
O. Sheikhnejad-Bishe ◽  
L. D. Wang ◽  
W. L. Li ◽  
...  
Keyword(s):  
Dielectric Loss ◽  
Dielectric Response ◽  
Low Dielectric ◽  
Giant Dielectric

Very low dielectric loss and giant dielectric response with excellent temperature stability of Ga 3+ and Ta 5+ co-doped rutile-TiO 2 ceramics

2017 ◽  
Vol 123 ◽  
pp. 15-23 ◽  
Author(s):  
Wattana Tuichai ◽  
Nateeporn Thongyong ◽  
Supamas Danwittayakul ◽  
Narong Chanlek ◽  
Pornjuk Srepusharawoot ◽  
...  
Keyword(s):  
Dielectric Loss ◽  
Dielectric Response ◽  
Temperature Stability ◽  
Low Dielectric ◽  
Giant Dielectric ◽  
Co Doped

Origin of low dielectric loss and giant dielectric response in (Nb+Al) co-doped strontium titanate

2018 ◽  
Vol 101 (11) ◽  
pp. 5089-5097 ◽  
Author(s):  
Zichen He ◽  
Minghe Cao ◽  
Liang Zhou ◽  
Lin Zhang ◽  
Juan Xie ◽  
...  
Keyword(s):  
Dielectric Loss ◽  
Strontium Titanate ◽  
Dielectric Response ◽  
Low Dielectric ◽  
Giant Dielectric ◽  
Co Doped

scholarly journals Colossal dielectric constant of NaNbO3 doped BaTiO3 ceramics

2016 ◽  
Vol 34 (2) ◽  
pp. 322-329 ◽  
Author(s):  
Wan Q. Cao ◽  
Ling F. Xu ◽  
Mukhlis M. Ismail ◽  
Li L. Huang
Keyword(s):  
Dielectric Constant ◽  
Dielectric Loss ◽  
Traditional Approach ◽  
Temperature Stability ◽  
Bound State ◽  
High Energy ◽  
Low Dielectric ◽  
Giant Dielectric ◽  
Giant Dielectric Constant ◽  
High Dielectric

AbstractBaTiO3 ceramics doped with 0.40 mol% NaNbO3 were prepared using a traditional approach by sintering at temperature of 1250 °C to 1290 °C. The prepared ceramics was characterized by very good dielectric properties, such as high dielectric constant (1.5 × 105), low dielectric loss (0.1), and good dielectric temperature stability in the −40 °C to 100 °C range for the sample sintered below 1270 °C. The dielectric characteristics obtained with XPS confirmed that Ti4+ ions remain in the state without any change. The huge increase in dielectric constant in NaNbO3 doped BaTiO3 samples occurs when large amount of Ba2+ ions are excited to a high energy bound state of Ba2+ − e or Ba+ to create electron hopping conduction. For samples with the content of NaNbO3 higher than 0.40 mol%, or sintering temperature higher than 1280 °C, compensation effect is dominated by cation vacancies with sharply decreasing dielectric constant and increased dielectric loss. The polaron effect is used to explain the relevant mechanism of giant dielectric constant appearing in the ferroelectric phase.

High pressure treated ZnO ceramics towards giant dielectric constants

2014 ◽  
Vol 2 (39) ◽  
pp. 16740-16745 ◽  
Author(s):  
Xuhai Li ◽  
Liang Xu ◽  
Lixin Liu ◽  
Yuan Wang ◽  
Xiuxia Cao ◽  
...  
Keyword(s):  
High Pressure ◽  
Dielectric Loss ◽  
Porous Ceramics ◽  
Dielectric Constants ◽  
Low Dielectric ◽  
Giant Dielectric ◽  
Zno Ceramics

We first synthesized ZnO porous ceramics with a giant permittivity of 104 and low dielectric loss using a high pressure treating method.

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