Dielectric Behavior of Solutions of Electrolytes in Solvents of Low Dielectric Constant. II. Dielectric Absorption

1947 ◽  
Vol 15 (1) ◽  
pp. 54-64 ◽  
Author(s):  
A. H. Sharbaugh ◽  
H. C. Eckstrom ◽  
C. A. Kraus
Keyword(s):  
Dielectric Constant ◽  
Dielectric Behavior ◽  
Low Dielectric Constant ◽  
Low Dielectric ◽  
Dielectric Absorption ◽  
Solutions Of Electrolytes

The low dielectric constant and relaxation dielectric behavior in hydrogen-bonding metal–organic frameworks

RSC Advances ◽  
2015 ◽  
Vol 5 (56) ◽  
pp. 45213-45216 ◽  
Author(s):  
Shan-Shan Yu ◽  
Guo-Jun Yuan ◽  
Hai-Bao Duan
Keyword(s):  
Dielectric Constant ◽  
Hydrogen Bonding ◽  
High Temperature ◽  
Metal Organic Framework ◽  
Metal Organic Frameworks ◽  
Dielectric Behavior ◽  
Low Dielectric Constant ◽  
Low Dielectric ◽  
Metal Organic ◽  
Organic Framework

A 3D hydrogen-bonding metal–organic framework shows a low dielectric constant and relaxation dielectric behavior at high temperature.

Willemite with Li2CO3 as a sintering aid for LTCC microwave substrates

2020 ◽  
Vol 37 (2) ◽  
pp. 67-72 ◽  
Author(s):  
Beata Synkiewicz-Musialska
Keyword(s):  
Dielectric Constant ◽  
Ceramic Powder ◽  
Dielectric Behavior ◽  
Low Dielectric Constant ◽  
Transmission Method ◽  
Sintering Aid ◽  
Content Type ◽  
Low Dielectric ◽  
Low Dissipation ◽  
Fabrication Procedure

Purpose The purpose of this paper is to report on fabrication procedure and present microstructure and dielectric behavior of willemite ceramic material with addition of 5% Li2CO3 as a sintering aid. Design/methodology/approach The samples were fabricated by ball milling of the ceramic powders, preparation of granulate and pressing and co-firing using temperature profile based on heating microscope observation. The dielectric properties of the material were measured by impedance spectroscopy (Hz-MHz), transmission method (GHz) and time domain spectroscopy (THz). The composition and microstructure of the material were investigated using X-ray diffraction, scanning electron microscopy and energy-dispersive spectroscopy analysis. Ceramic powder was used to fabricate a green tape and low temperature co-fired ceramics (LTCC) multilayer structures, which in the next steps of the research were examined at the angle of cooperation with conductive pastes, strength and geometric repeatability. Findings The fabricated material showed low sintering temperature (920°C–960°C), low dielectric constant 6.2–6.34 and low dissipation factor at the level of 0.004–0.007. As LTCC material, willemite with 5% Li2CO3 addition showed good compatibility with AgPd conductive paste. Originality/value Search for new materials with low dielectric constant, applicable in LTCC technology, and development of their fabrication procedure are important tasks for the progress in modern microwave circuits.

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