The microscopic mechanism in the realization of ultra-wide temperature range stability in Bi3+,Na+,Zn2+,Nb5+ doped BaTiO3 dielectric system

RSC Advances ◽  
2016 ◽  
Vol 6 (29) ◽  
pp. 24518-24526 ◽  
Author(s):  
Bowen Zhang ◽  
Lingxia Li
Keyword(s):  
Dielectric Properties ◽  
Wide Temperature Range ◽  
Microscopic Mechanism ◽  
Temperature Range ◽  
System P ◽  
Dielectric System

In this paper, the micro-mechanism in a (1 − x)BaTiO3–xBi(Zn2/3Nb1/3)O3–0.01NaNbO3 system, benefiting the realization of ultra-wide temperature range stability, was proposed and applied to study the dielectric properties.

Dielectric properties of pure and Mn-doped CaCu3Ti4O12 ceramics over a wide temperature range

2016 ◽  
Vol 36 (1-4) ◽  
pp. 46-57 ◽  
Author(s):  
ChunChang Wang ◽  
Wei Ni ◽  
Da Zhang ◽  
Xiaohong Sun ◽  
Jing Wang ◽  
...  
Keyword(s):  
Dielectric Properties ◽  
Wide Temperature Range ◽  
Temperature Range ◽  
Mn Doped

scholarly journals Physical Model for Frequency Domain Spectroscopy of Oil–Paper Insulation in a Wide Temperature Range by a Novel Analysis Approach

Energies ◽  
2020 ◽  
Vol 13 (17) ◽  
pp. 4530
Author(s):  
Jiacheng Xie ◽  
Ming Dong ◽  
Boning Yu ◽  
Yizhuo Hu ◽  
Kaige Yang ◽  
...  
Keyword(s):  
Frequency Domain ◽  
Wide Temperature Range ◽  
Quantitative Model ◽  
Practical Significance ◽  
Physical Parameters ◽  
Power Equipment ◽  
Microscopic Mechanism ◽  
Depolarization Current ◽  
Temperature Range ◽  
Generation Mechanisms

Frequency domain spectroscopy is considered to be a promising and novel method for the assessment of the insulation condition of power equipment. This work has practical significance as it explains the microscopic mechanism of this method in a wide temperature range and further establishes its quantitative model. To achieve this, in the present paper, we select oil-impregnated paper—one of the most common insulation materials for power equipment with a complex microstructure—as a test sample, deduce a formula based on the relationship between the real and imaginary parts of the complex permittivity to extract the spectra of independent dielectric processes and measure the frequency domain spectra of oil-impregnated paper under different temperatures, as well as its thermally stimulated depolarization current with a series of bias voltages. The analysis results reveal that oil-impregnated paper’s frequency domain spectra in a wide temperature range are mainly determined by dielectric processes whose generation mechanisms are low-frequency dispersion, DC conduction, electrode relaxation, interfacial relaxation and dipole relaxation, respectively. Moreover, due to the different thermal properties of charge motions, the macroscopic characteristics and microscopic generation mechanisms of both spectra vary significantly with the sample’s temperature. After verifying the generation mechanisms of the spectra in high, middle and low-temperature ranges, function models for those spectra with clear physical meanings are established separately, providing sufficient physical parameters to carry out insulation assessment.

Effects of Potassium Fluoride Salt Additive on the Sintering Temperature and Dielectric Properties of BaFe0.5Nb0.5O3 Ceramics

2008 ◽  
Vol 55-57 ◽  
pp. 885-888 ◽  
Author(s):  
Uraiwan Intatha ◽  
K. Sathitada ◽  
Sukum Eitssayeam ◽  
Kamonpan Pengpat ◽  
Gobwute Rujijanagul ◽  
...  
Keyword(s):  
Dielectric Constant ◽  
Dielectric Properties ◽  
Wide Temperature Range ◽  
Sintering Temperature ◽  
Potassium Fluoride ◽  
Fluoride Salt ◽  
Temperature Range ◽  
High Dielectric ◽  
Very High ◽  
Diffuse Phase

BaFe0.5Nb0.5O3 (BFN) exhibits very high dielectric constant over a wide temperature range. However, these materials normally require high-temperature sintering to achieve a maximum densification. The aim of this study is to determine the effect of potassium fluoride salt on the sintering and dielectric properties of BFN ceramics. The results show that KF additive lower the sintering temperature by 100-200°C without affecting the formation of BFN phase. Ceramics doped with 1% KF show optimum densities of about 95% of the theoretical value when sintered at 1300°C. The addition of fluoride salt in the BFN ceramics causes very broad dielectric constant curves over a wide temperature range indicating the diffuse phase transition characteristic. Furthermore, this addition also reduces in the dielectric loss when compared with pure BFN ceramics

scholarly journals Enhancement of thermoelectric properties over a wide temperature range by lattice disorder and chemical potential tuning in a (CuI)y(Bi2Te3)0.95−x(Bi2Se3)x(Bi2S3)0.05 quaternary system

RSC Advances ◽  
2019 ◽  
Vol 9 (8) ◽  
pp. 4190-4197 ◽  
Author(s):  
Hyunyong Cho ◽  
Song Yi Back ◽  
Jin Hee Kim ◽  
Omkaram Inturu ◽  
Ho Seong Lee ◽  
...  
Keyword(s):  
Thermoelectric Properties ◽  
Wide Temperature Range ◽  
Quaternary System ◽  
Chemical Potential ◽  
Temperature Dependent ◽  
Lattice Disorder ◽  
Temperature Range ◽  
System P

Temperature-dependent ZT values of (CuI)y(Bi2Te3)0.95−x(Bi2Se3)x(Bi2S3)0.05 (x = 0.05, 0.2; y = 0.0, 0.003) compounds compared with other related n-type compounds.

Low-frequency dielectric properties of CaNb2O6 ceramics over a wide temperature range

2015 ◽  
Vol 41 (10) ◽  
pp. 14773-14779 ◽  
Author(s):  
Haibo Li ◽  
Chunchang Wang ◽  
Hong Wang ◽  
Da Zhang ◽  
Nan Zhang
Keyword(s):  
Dielectric Properties ◽  
Wide Temperature Range ◽  
Low Frequency ◽  
Temperature Range

scholarly journals Phase-dependent dielectric properties and proton conduction of neopentyl glycol

RSC Advances ◽  
2021 ◽  
Vol 11 (38) ◽  
pp. 23228-23234
Author(s):  
Hailong Pan ◽  
Jiangshui Luo ◽  
Bing Li ◽  
Michael Wübbenhorst
Keyword(s):  
Dielectric Properties ◽  
Wide Temperature Range ◽  
Dielectric Spectroscopy ◽  
Proton Conduction ◽  
Neopentyl Glycol ◽  
Temperature Range ◽  
Broadband Dielectric Spectroscopy

Phase-dependent dielectric properties and proton conduction of neopentyl glycol (NPG) are studied systematically over a wide temperature range via broadband dielectric spectroscopy.

Construction of flexible 1D core-shell Al2O3@NaNbO3 nanowires/poly-(p-phenylene benzobisoxazole) nanocomposite with stable and enhanced dielectric properties in an ultra-wide temperature range

2021 ◽  
Author(s):  
Jinpeng Li ◽  
Junhao Jiang ◽  
Qilin Cheng ◽  
Zhong-Kai Cui ◽  
Xiaoyun Liu ◽  
...  
Keyword(s):  
Thermal Stability ◽  
High Temperature ◽  
Dielectric Properties ◽  
Wide Temperature Range ◽  
Core Shell ◽  
Critical Importance ◽  
Excellent Thermal Stability ◽  
Temperature Range ◽  
The Poor ◽  
Polymeric Dielectrics

Polymeric dielectrics with high-temperature resilience are of critical importance in developing advanced electrostatic capacitors. Poly-(p-phenylene benzobisoxazole) (PBO) is a polymer with excellent thermal stability. However, the poor processability and low...

A novel Na0.5K0.5NbO3–La(Zn0.5Ti0.5)O3 ceramics with excellent dielectric properties at wide temperature range

2019 ◽  
Vol 45 (14) ◽  
pp. 16842-16847 ◽  
Author(s):  
Zhiyong Liu ◽  
An Zhang ◽  
Xinhui Geng ◽  
Jinshan Lu ◽  
Yuqing Mao ◽  
...  
Keyword(s):  
Dielectric Properties ◽  
Wide Temperature Range ◽  
Temperature Range
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