The electronic and microwave dielectric properties of Sr1-xCaxWO4 alloys by first principles calculations

2019 ◽  
Vol 572 ◽  
pp. 266-272 ◽  
Author(s):  
N. Najafvandzadeh ◽  
R. Vali
Keyword(s):  
Dielectric Properties ◽  
First Principles ◽  
Microwave Dielectric Properties ◽  
First Principles Calculations ◽  
Microwave Dielectric

First-principles calculations of graphene-based polyaniline nano-hybrids for insight of electromagnetic properties and electronic structures

RSC Advances ◽  
2016 ◽  
Vol 6 (77) ◽  
pp. 73915-73923 ◽  
Author(s):  
Yuping Duan ◽  
Jin Liu ◽  
Yahong Zhang ◽  
Tongmin Wang
Keyword(s):  
Dielectric Properties ◽  
First Principles ◽  
Electronic Structures ◽  
Microwave Dielectric Properties ◽  
First Principles Calculation ◽  
Electromagnetic Properties ◽  
First Principles Calculations ◽  
Microwave Dielectric

The microwave dielectric properties of graphene-based polyaniline hybrids are studied based on experiments and first-principles calculation.

scholarly journals First-principles calculation of microwave dielectric properties of Al-doping ZnO powders

2009 ◽  
Vol 58 (11) ◽  
pp. 8002
Author(s):  
Huang Yun-Xia ◽  
Cao Quan-Xi ◽  
Li Zhi-Min ◽  
Li Gui-Fang ◽  
Wang Yu-Peng ◽  
...  
Keyword(s):  
Dielectric Properties ◽  
First Principles ◽  
Microwave Dielectric Properties ◽  
First Principles Calculation ◽  
Al Doping ◽  
Microwave Dielectric ◽  
Zno Powders

scholarly journals Three-Phase Borate Solid Solution With Low Sintering Temperature, High Quality Factor, and Low Dielectric Constant: Experimental and DFT Study

2020 ◽  
Author(s):  
Rui Peng ◽  
Hua Su ◽  
Yuanxun Li ◽  
Yongcheng Lu ◽  
Liang Shi ◽  
...  
Keyword(s):  
Dielectric Properties ◽  
Microwave Dielectric Properties ◽  
Solid State Reactions ◽  
Network Analyzer ◽  
First Principles Calculations ◽  
Characterization Methods ◽  
Low Dielectric ◽  
Microwave Dielectric ◽  
Three Phase ◽  
Electron Distributions

Abstract The sintering and microwave dielectric properties of a ceramic material based on Mg2+ substituted Zn3B2O6 have been widely studied using first principles calculations and experimental solid-state reactions. Characterization methods include the Network Analyzer, X-ray, Raman diffraction, scanning electron microscopy, energy-dispersive spectroscopy, and differential-thermal & thermo-mechanical analyzer. The increasing amount of Mg2+ results in the appearance of Mg2B2O5 and ZnO, and the mutual substitution (Mg2+ and Zn2+) phenomenon has emerged in Zn3B2O6 and Mg2B2O5. The mechanisms have been explained with the help of DFT calculations. The bond parameters and electron distributions of the ZnO4 tetrahedron and the MgO6 octahedron have been modified due to substitution. The sintering, substitution, and phase formation properties have been analyzed quantitatively through the energy parameters. The best dielectric properties were obtained for x=0.20 sintered at 950℃, εr=6.47, Q×f=89,600GHz (15.2GHz), τf=-48.6ppm/℃, relative density=96.7%. The substitution of Mg2+ to Zn2+ is a feasible method to improve the microwave dielectric properties of the Zn3B2O6 ceramic.

scholarly journals First principles calculation of electronic structure for Al-doped 3C-SiC and its microwave dielectric properties

2012 ◽  
Vol 61 (23) ◽  
pp. 237103
Author(s):  
Li Zhi-Min ◽  
Shi Jian-Zhang ◽  
Wei Xiao-Hei ◽  
Li Pei-Xian ◽  
Huang Yun-Xia ◽  
...  
Keyword(s):  
Electronic Structure ◽  
Dielectric Properties ◽  
First Principles ◽  
Microwave Dielectric Properties ◽  
First Principles Calculation ◽  
Microwave Dielectric

Effect of water content on microwave dielectric properties of building materials

2020 ◽  
Vol 263 ◽  
pp. 120107
Author(s):  
Romain Damez ◽  
Philippe Artillan ◽  
Arthur Hellouin de Menibus ◽  
Cédric Bermond ◽  
Pascal Xavier
Keyword(s):  
Dielectric Properties ◽  
Water Content ◽  
Building Materials ◽  
Microwave Dielectric Properties ◽  
Effect Of Water ◽  
Microwave Dielectric
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