Electromechanical Response and Dielectric Loss of Prepolarized Barium Titanate under Maintained Electric Bias. Part I

1953 ◽  
Vol 25 (4) ◽  
pp. 703-710 ◽  
Author(s):  
H. G. Baerwald ◽  
D. A. Berlincourt
Keyword(s):  
Dielectric Loss ◽  
Barium Titanate

An in situ (K0.5Na0.5)NbO3-doped barium titanate foam framework and its cyanate ester resin composites with temperature-stable dielectric properties and low dielectric loss

2019 ◽  
Vol 3 (4) ◽  
pp. 726-736 ◽  
Author(s):  
Longhui Zheng ◽  
Li Yuan ◽  
Guozheng Liang ◽  
Aijuan Gu
Keyword(s):  
Dielectric Properties ◽  
Dielectric Loss ◽  
Barium Titanate ◽  
Cyanate Ester ◽  
Resin Composites ◽  
Cyanate Ester Resin ◽  
Low Dielectric ◽  
Doped Barium Titanate

High-k composites with temperature-stable dielectric properties and low dielectric loss obtained through building a network with in situ-doped barium titanate foam.

Broadband Dielectric Spectroscopy Analysis of Dielectric Properties of Barium Titanate Ceramics

2013 ◽  
Vol 744 ◽  
pp. 323-328 ◽  
Author(s):  
Jie Yang ◽  
Xiang Yun Deng ◽  
Jian Bao Li ◽  
Qiang Cai ◽  
Hai Tao Zhang ◽  
...  
Keyword(s):  
Dielectric Constant ◽  
Dielectric Properties ◽  
Dielectric Loss ◽  
Barium Titanate ◽  
Relaxation Model ◽  
Debye Relaxation ◽  
Broadband Dielectric Spectroscopy ◽  
Function Fitting ◽  
Loss Experience ◽  
Titanate Ceramics

The complex dielectric behaviors of ferroelectric barium titanate (BT) ceramics were investigated. The dielectric properties were studied as a function of temperature and frequency using broadband dielectric spectrometer. The results show that the maximum value of dielectric constant occurs at 500nm BT ceramics, which is approximately 7,500; the dielectric loss is lower than 0.03 with the temperature varying from 225 K to 450 K. Dielectric constant and dielectric loss experience three dielectric peaks corresponding to rhombohedral to orthorhombic, tetragonal and cubic transitions. With the frequency ranges from 1 MHz to 1 GHz, the dielectric relaxation is apparently present. The relaxation process obeys Cole-Cole relaxation model at high temperature and conforms to Debye relaxation model when the temperature far lower than Curie temperature. The relaxation time is the order magnitude of ~10-9s obtained by Havriliak-Negami function fitting, which is very consistent with theoretical calculation.

The Effect of Different Doping Methods of Sintering Aids on the Barium Titanate Based X7R Ceramics

2007 ◽  
Vol 336-338 ◽  
pp. 83-86 ◽  
Author(s):  
C. Ma ◽  
X.H. Wang ◽  
R.Z. Chen ◽  
Long Tu Li ◽  
Zhi Lun Gui
Keyword(s):  
Rare Earth ◽  
Dielectric Loss ◽  
Barium Titanate ◽  
Low Temperature ◽  
Rare Earth Oxide ◽  
Sintering Aids ◽  
Sintering Properties ◽  
Relationship Of ◽  
The Relationship

The barium titanate based X7R ceramics, which are doped with rare earth oxide, Nb2O5, Co3O4 and ZnO-B2O3, could be sintered at a rather low temperature to satisfy the X7R requirements with good permittivity and dielectric loss. In this paper, different doping methods of sintering aids have been used to prepare X7R BaTiO3 ceramics. Samples were sintered at a low temperature and the relationship of doping methods and sintering properties has been concluded.

Dielectric Properties and Microstructure of Y-Al-Ga-Si Co-Doped Barium Titanate Ceramics

2014 ◽  
Vol 602-603 ◽  
pp. 700-704
Author(s):  
Min Jia Wang ◽  
Qi Long Zhang ◽  
Xin Hui Zhao ◽  
Hui Yang
Keyword(s):  
Dielectric Properties ◽  
Dielectric Loss ◽  
Barium Titanate ◽  
X Ray Diffraction ◽  
Solid State Method ◽  
Low Dielectric ◽  
Doped Barium Titanate ◽  
Titanate Ceramics ◽  
Functional Components ◽  
Co Doped

Multilayer ceramic capacitors (MLCC) are important functional components of electronic information technology. The development of AC MLCC requires low dielectric loss and high AC breakdown voltage. In this paper, Y-Al-Ga-Si co-doped barium titanate ceramics were prepared by conventional solid state method. Microstructures, surface morphology and dielectric properties were investigated by X-ray diffraction, SEM, and LCR analyzer, respectively. Y3+ entered into the lattice of BaTiO3, replaced A-sites and B-sites, suppressed grain growth effectively, and made crystal structure change from tetragonal to pseudo-cubic, which reduced dielectric loss and lowered the Curie peak. The sintering characteristic and permittivity can be improved by the incorporation of Al and Ga. BaTiO3 -0.06Y2O3 - 0.02Ga2O3 -0.01Al2O3 -0.01SiO2 ceramics sintered at 1380°C achieved good dielectric properties: εr= ~2223, tanδ =~1.1% (at 1kHz), ΔC/C25 <~15.26% (from 55°C to 150°C).

Colossal dielectric performance of pure barium titanate ceramics consolidated by spark plasma sintering

RSC Advances ◽  
2016 ◽  
Vol 6 (79) ◽  
pp. 75422-75429 ◽  
Author(s):  
X. Yang ◽  
D. Li ◽  
Z. H. Ren ◽  
R. G. Zeng ◽  
S. Y. Gong ◽  
...  
Keyword(s):  
Dielectric Loss ◽  
Barium Titanate ◽  
Dielectric Permittivity ◽  
Oxygen Vacancies ◽  
High Permittivity ◽  
Low Dielectric ◽  
Plasma Sintering ◽  
Dielectric Performance ◽  
Spark Plasma ◽  
Titanate Ceramics

The pure BaTiO3 nanoceramics have a high permittivity up to 6 × 104 and a low dielectric loss. The polaron dipoles configured by oxygen vacancies and Ti3+ cations within grains could contribute to the colossal dielectric permittivity of the ceramics.

AN INVESTIGATION OF SOME BARIUM TITANATE COMPOSITIONS FOR TRANSDUCER APPLICATIONS

1957 ◽  
Vol 35 (5) ◽  
pp. 594-607 ◽  
Author(s):  
D. Schofield ◽  
R. F. Brown
Keyword(s):  
Dielectric Loss ◽  
Barium Titanate ◽  
High Power ◽  
Large Reduction ◽  
Electroacoustic Transducer ◽  
Large Dielectric Loss ◽  
High Fields ◽  
Piezoelectric Constants

The most important factor limiting the use of barium titanate in high power electroacoustic transducer applications is the large dielectric loss in high exciting fields. It has been shown that the addition of cobalt to 5% calcium, 95% barium titanate compositions produces a large reduction in the loss in high fields without significantly affecting the piezoelectric constants of polarized ceramic.

Fabrication and Properties of Novel Polyetheretherketone/Barium Titanate Composites with Low Dielectric Loss

2011 ◽  
Vol 40 (11) ◽  
pp. 2240-2247 ◽  
Author(s):  
R. K. Goyal ◽  
V. V. Madav ◽  
P. R. Pakankar ◽  
S. P. Butee
Keyword(s):  
Dielectric Loss ◽  
Barium Titanate ◽  
Low Dielectric
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