Flexible and low cost lead free composites with high dielectric constant

2017 ◽  
Vol 43 (4) ◽  
pp. 3923-3926 ◽  
Author(s):  
Muhammad Nauman Khan ◽  
Nadeem Jelani ◽  
Chunchun Li ◽  
Jibran Khaliq
Keyword(s):  
Dielectric Constant ◽  
High Dielectric Constant ◽  
Low Cost ◽  
Lead Free ◽  
High Dielectric

A Low-Cost Chemical Route for High Dielectric Constant Plate-Shaped Nanocrystalline CaCu3Ti4O12

2012 ◽  
Vol 16 (1) ◽  
pp. 79-83 ◽  
Author(s):  
Ranjit Kumar ◽  
M. Zulfequar ◽  
V. N. Singh ◽  
Sukhvir Singh ◽  
T. D. Senguttuvan
Keyword(s):  
Dielectric Constant ◽  
High Dielectric Constant ◽  
Low Cost ◽  
Chemical Route ◽  
High Dielectric

High performance dielectric composites by latex compounding of graphene oxide-encapsulated carbon nanosphere hybrids with XNBR

2014 ◽  
Vol 2 (29) ◽  
pp. 11144-11154 ◽  
Author(s):  
Ming Tian ◽  
Qin Ma ◽  
Xiaolin Li ◽  
Liqun Zhang ◽  
Toshio Nishi ◽  
...  
Keyword(s):  
Dielectric Constant ◽  
Graphene Oxide ◽  
Elastic Modulus ◽  
High Performance ◽  
High Dielectric Constant ◽  
Low Cost ◽  
Low Dielectric ◽  
Low Elastic Modulus ◽  
High Dielectric ◽  
Latex Compounding

A novel dielectric composite with high dielectric constant (k), low dielectric loss, low elastic modulus and large actuated strain at a low electric field was prepared by a simple, low-cost and efficient method.

Photodefinable Metal Oxide Dielectrics: A Novel Method for Fabricating Low Cost RF Capacitive MEMS Switches

2003 ◽  
Vol 783 ◽  
Author(s):  
Guoan Wang ◽  
Augustin Jeyakumar ◽  
John Papapolymerou ◽  
Clifford L. Henderson
Keyword(s):  
Dielectric Constant ◽  
Metal Oxide ◽  
Rf Mems ◽  
High Dielectric Constant ◽  
Low Cost ◽  
Organic Precursor ◽  
Mems Switches ◽  
Novel Approach ◽  
Capacitive Mems ◽  
High Dielectric

ABSTRACTIn this paper, a novel approach for fabricating low cost capacitive RF MEMS switches using directly photodefinable high dielectric constant metal oxides has been developed. In this approach, a radiation sensitive metal-organic precursor is deposited via spin coating and converted patternwise to a high dielectric constant metal oxide via ultraviolet exposure. The feasibility of this approach is demonstrated by fabricating bridge-type and cantilever-type switches with a nitride/metal-oxide/nitride dielectric film stack. These switches exhibited significantly higher isolation and load capacitances as compared to comparable switches fabricated using a simple silicon nitride dielectric.

scholarly journals High dielectric constant of (1-x)(Na0.5Bi0.5)TiO3-xBaTiO3 prepared by the hydrothermal method

2019 ◽  
Vol 8 (3) ◽  
pp. 213-219
Author(s):  
Mohammed Mesrar ◽  
Tajdine Lamcharfi ◽  
Nor-Said Echatoui ◽  
Farid Abdi ◽  
Ahmed Harrach
Keyword(s):  
Dielectric Constant ◽  
High Dielectric Constant ◽  
Low Cost ◽  
Low Frequency ◽  
Treatment Temperature ◽  
Synthesis Conditions ◽  
Heating Treatment ◽  
Alkaline Conditions ◽  
Preparation Route ◽  
High Dielectric

In this study, hydrothermal synthesis conditions for the formation of (1-x (Na0.5Bi0.5)TiO3-xBaTiO3  (x=0; 0.03; 0.05; 0.06; 0.07; 0.08 and 0.1)  compounds were investigated. The process parameters such as the alkaline conditions and heating treatment (temperature, time) as well the influence of the (Na, Bi)/Ba ratio were investigated in detail. The as-prepared NBT powders were characterized by X-ray powder diffraction, scanning electron microscope (SEM) and dielectric measurements. Taking into account NBT behavior draws consideration to phenomena of the ion ordering, coexistence of various phase regions in a crystal lattice, phase transition diffusion and a considerably new phenomenon: the existence of a very high dielectric constant at low frequency. Our result presents a simple preparation route for low-cost and high-purity.

scholarly journals Cu(i) substituted wurtzite ZnO: a novel room temperature lead free ferroelectric and high-κ giant dielectric

RSC Advances ◽  
2020 ◽  
Vol 10 (19) ◽  
pp. 11382-11392 ◽  
Author(s):  
Neeraj Singh ◽  
Preetam Singh
Keyword(s):  
Dielectric Constant ◽  
Room Temperature ◽  
High Dielectric Constant ◽  
Lead Free ◽  
Giant Dielectric ◽  
High Dielectric

Cu+ ion substituted ZnO, Zn1−xCuxO1−δ have shown high dielectric constant (∼6300) at 600 °C at 100 kHz frequency and ferroelectricity at room temperature than for bulk Zn0.95Cu0.05O1−δ samples.

scholarly journals Epitaxial growth of high dielectric constant lead-free relaxor ferroelectric for high-temperature operational film capacitor

2015 ◽  
Vol 592 ◽  
pp. 29-33 ◽  
Author(s):  
Somu Kumaragurubaran ◽  
Takahiro Nagata ◽  
Yoshifumi Tsunekawa ◽  
Kenichiro Takahashi ◽  
Sung-Gi Ri ◽  
...  
Keyword(s):  
Dielectric Constant ◽  
High Temperature ◽  
Epitaxial Growth ◽  
High Dielectric Constant ◽  
Relaxor Ferroelectric ◽  
Lead Free ◽  
Film Capacitor ◽  
High Dielectric

scholarly journals High dielectric constant of (1-x)(Na0.5Bi0.5)TiO3-xBaTiO3 prepared by the hydrothermal method

2019 ◽  
Vol 8 (3) ◽  
pp. 213
Author(s):  
Mohammed Mesrar ◽  
Tajdine Lamcharfi ◽  
Nor-Said Echatoui ◽  
Farid Abdi ◽  
Ahmed Harrach
Keyword(s):  
Dielectric Constant ◽  
High Dielectric Constant ◽  
Low Cost ◽  
Low Frequency ◽  
Treatment Temperature ◽  
Synthesis Conditions ◽  
Heating Treatment ◽  
Alkaline Conditions ◽  
Preparation Route ◽  
High Dielectric

<p>In this study, hydrothermal synthesis conditions for the formation of (1-x (Na<sub>0.5</sub>Bi<sub>0.5</sub>)TiO<sub>3</sub>-xBaTiO<sub>3</sub>  (x=0; 0.03; 0.05; 0.06; 0.07; 0.08 and 0.1)  compounds were investigated. The process parameters such as the alkaline conditions and heating treatment (temperature, time) as well the influence of the (Na, Bi)/Ba ratio were investigated in detail. The as-prepared NBT powders were characterized by X-ray powder diffraction, scanning electron microscope (SEM) and dielectric measurements. Taking into account NBT behavior draws consideration to phenomena of the ion ordering, coexistence of various phase regions in a crystal lattice, phase transition diffusion and a considerably new phenomenon: the existence of a very high dielectric constant at low frequency. Our result presents a simple preparation route for low-cost and high-purity.</p>

Enhanced performance of supercapacitors by constructing a “mini parallel-plate capacitor” in an electrode with high dielectric constant materials

2020 ◽  
Vol 8 (32) ◽  
pp. 16661-16668
Author(s):  
Huayao Tu ◽  
Shouzhi Wang ◽  
Hehe Jiang ◽  
Zhenyan Liang ◽  
Dong Shi ◽  
...  
Keyword(s):  
Dielectric Constant ◽  
Carbon Fiber ◽  
Parallel Plate ◽  
Sandwich Structure ◽  
High Dielectric Constant ◽  
Parallel Plate Capacitor ◽  
Plate Capacitor ◽  
Fiber Metal ◽  
High Dielectric ◽  
Mini Plate

The carbon fiber/metal oxide/metal oxynitride layer sandwich structure is constructed in the electrode to form a mini-plate capacitor. High dielectric constant metal oxides act as dielectric to increase their capacitance.

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