scholarly journals Investigation of dielectric properties in tantalum doped AgNbO3 ceramic

2021 ◽  
Vol 2070 (1) ◽  
pp. 012058
Author(s):  
A Joshi ◽  
S C Bhatt ◽  
M Uniyal ◽  
K Kumar
Keyword(s):  
Dielectric Properties ◽  
Phase Shift ◽  
Low Temperature ◽  
Electric Field ◽  
Dielectric Materials ◽  
Major Effect ◽  
Temperature Range ◽  
Electronic Technologies

Abstract Dielectric materials developed from Tantalum (Ta) doped AgNbO3 (ATN) show excellent properties in variety of electronic technologies. In the temperature range of 70 to 400 °C, four major dielectric abnormalities were observed in ATN (x = 0.1) while in ATN (x = 0.2) the maxima of M1-M2 phase shift to low temperature value. ATN ceramics’ dielectric properties dominate temperature and electric field-based performance, which has a major effect on their properties. This study looked into the dielectric properties in ATN.

Dielectric properties of SrBi2Ta2O9 films in the low-temperature range

2005 ◽  
Vol 40 (23) ◽  
pp. 6329-6331 ◽  
Author(s):  
Pingxiong Yang ◽  
Ming Guo ◽  
Meirong Shi
Keyword(s):  
Dielectric Properties ◽  
Low Temperature ◽  
Temperature Range

scholarly journals Dielectric properties of Bi12SiO20 crystals doped with Al

2019 ◽  
Vol 27 (2) ◽  
pp. 85-88
Author(s):  
T. V. Panchenko ◽  
L. M. Karpova
Keyword(s):  
Dielectric Properties ◽  
Dielectric Permittivity ◽  
Electric Field ◽  
Hysteresis Loops ◽  
Complex Dielectric Permittivity ◽  
Temperature Range ◽  
Dielectric Matrix ◽  
Before And After ◽  
Frequency Dependences

The temperature-frequency dependences of the complex dielectric permittivity ε and the voltage-farad characteristics of undoped and aluminum doped Bi12SiO20 crystals are studied before and after their polarization. It is shown that Al ions in the Bi12SiO20 dielectric matrix provide a significant increase as well as nonlinearity of ε in the temperature range 300 – 800 K and electric field strengths Е = 103 – 104 V/cm. It is shown that polarization causes the appearance of dielectric hysteresis loops. Al impurity significantly affects the appearance and parameters of these loops. The role of Al ions in increasing the contribution of the quasi-dipole mechanism in the polarization processes is revealed.

Ultra-low temperature co-fired ceramics with adjustable microwave dielectric properties in Na2O-Bi2O3-MoO3 ternary system: A comprehensive study

2022 ◽  
Author(s):  
Shuzhao Hao ◽  
Di Zhou ◽  
Lixia Pang ◽  
Ming-Zhao Dang ◽  
Shi-Kuan Sun ◽  
...  
Keyword(s):  
Spectral Analysis ◽  
Dielectric Properties ◽  
Low Temperature ◽  
Ternary System ◽  
Microwave Dielectric Properties ◽  
Dielectric Materials ◽  
Phase Identification ◽  
System A ◽  
Microwave Dielectric ◽  
Comprehensive Study

Herein, a series of microwave dielectric materials in the Na2O-Bi2O3-MoO3 ternary system were studied via phase identification, microstructure characterization, spectral analysis and microwave dielectric properties test, such as Na2MoO4, Na6Mo10O33,...

Low Temperature Cofiring and Dielectric Properties of Ca-Doped Al2O3/K2O3–B2O3–SiO2 Composite Ceramics for LTCC Applications

2018 ◽  
Vol 15 (2) ◽  
pp. 81-85
Author(s):  
Zhe Song ◽  
Joanna Chu ◽  
Kun Huang ◽  
Lasse Norén ◽  
Zhenxiao Fu ◽  
...  
Keyword(s):  
Dielectric Properties ◽  
Low Temperature ◽  
Dielectric Materials ◽  
Material System ◽  
Composite Ceramics ◽  
Ca Doping ◽  
Temperature Ranges ◽  
New Material ◽  
Tan Δ ◽  
Initial Results

Al2O3/K2O3–B2O3–SiO2 low temperature cofired ceramics (LTCC) dielectric materials doped with CaCO3 were prepared by using a solid-state reaction. The microstructure and dielectric properties of Al2O3/K–B–Si borosilicate, together with the effects of Ca doping, were investigated. A new material system candidate of Al2O3/KBSiO borosilicate doped by Ca was achieved after sintering at 880°C, which presents an optimized performance on dielectric properties with a permittivity εr < 8 and dielectric loss tan δ ≤ 0.002 and excellent stabilities across very broad frequency and temperature ranges. Most importantly, the initial results have also indicated that the new dielectric composite material is well compatible with the existing LTCC process, suggesting a considerable potential for practical LTCC applications.

scholarly journals The Electric Field Responses of Inorganic Ionogels and Poly(ionic liquid)s

Molecules ◽  
2020 ◽  
Vol 25 (19) ◽  
pp. 4547
Author(s):  
Zhenjie Zhao ◽  
Guangchen Zhang ◽  
Yuting Yin ◽  
Chenjie Dong ◽  
Ying Dan Liu
Keyword(s):  
Ionic Liquid ◽  
Dielectric Properties ◽  
Electric Field ◽  
Dielectric Materials ◽  
Synthesis Methods ◽  
Responsive Materials ◽  
Ion Motion ◽  
Application Potential ◽  
Poly Ionic Liquid ◽  
Er Fluids

Ionic liquids (ILs) are a class of pure ions with melting points lower than 100 °C. They are getting more and more attention because of their high thermal stability, high ionic conductivity and dielectric properties. The unique dielectric properties aroused by the ion motion of ILs makes ILs-contained inorganics or organics responsive to electric field and have great application potential in smart electrorheological (ER) fluids which can be used as the electro-mechanical interface in engineering devices. In this review, we summarized the recent work of various kinds of ILs-contained inorganic ionogels and poly(ionic liquid)s (PILs) as ER materials including their synthesis methods, ER responses and dielectric analysis. The aim of this work is to highlight the advantage of ILs in the synthesis of dielectric materials and their effects in improving ER responses of the materials in a wide temperature range. It is expected to provide valuable suggestions for the development of ILs-contained inorganics and PILs as electric field responsive materials.

Mathematical model to predict the characteristics of polarization in dielectric materials: The concept of piezoelectrcity and electrostriction

2019 ◽  
Author(s):  
Chem Int
Keyword(s):  
Mathematical Model ◽  
Electric Field ◽  
Lead Zirconate Titanate ◽  
Dielectric Material ◽  
Strain Curve ◽  
Dielectric Materials ◽  
Lead Zirconate ◽  
Simulation Software ◽  
Constitutive Law ◽  
Basic Material

Model was developed for the prediction of polarization characteristics in a dielectric material exhibiting piezoelectricity and electrostriction based on mathematical equations and MATLAB computer simulation software. The model was developed based on equations of polarization and piezoelectric constitutive law and the functional coefficient of Lead Zirconate Titanate (PZT) crystal material used was 2.3×10-6 m (thickness), the model further allows the input of basic material and calculation of parameters of applied voltage levels, applied stress, pressure, dielectric material properties and so on, to generate the polarization curve, strain curve and the expected deformation change in the material length charts. The mathematical model revealed that an application of 5 volts across the terminals of a 2.3×10-6 m thick dielectric material (PZT) predicted a 1.95×10-9 m change in length of the material, which indicates piezoelectric properties. Both polarization and electric field curve as well as strain and voltage curve were also generated and the result revealed a linear proportionality of the compared parameters, indicating a resultant increase in the electric field yields higher polarization of the dielectric materials atmosphere.

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