Synthesis and Characterization of BaTiO3-(Bi0.5Na0.5)TiO3 Solid Solution Based Dielectric Ceramics

2012 ◽  
Vol 512-515 ◽  
pp. 1160-1164
Author(s):  
Guo Feng Yao ◽  
Xiao Hui Wang ◽  
Long Tu Li
Keyword(s):  
Solid Solution ◽  
Dielectric Properties ◽  
Solid State ◽  
Curie Temperature ◽  
Solid Solutions ◽  
Solid State Reaction ◽  
Synthesis And Characterization ◽  
Conventional Solid State Reaction ◽  
Dielectric Ceramics

BaTiO3-(Bi0.5Na0.5)TiO3 (BTBNT) solid solution ceramics with the Curie temperature higher than 150°C were prepared, which were promising for X9R MLCCs application. (Bi0.5Na0.5)TiO3 (BNT) was first synthesized by the conventional solid state reaction and then it was mixed with BaTiO3 (BT) with increasing BNT content from 0 to 12 mol%. BaTiO3-(Bi0.5Na0.5TiO3 solid solutions were obtained after calcining at 1100°C. The structural and dielectric properties of BTBNT and Nb-doped BTBNT ceramics were investigated.

Structure and Dielectric Properties of Homogeneous Srm-3Bi4TimO3m+3 (m = 3, 4, 5, and 6) Ceramics

2007 ◽  
Vol 336-338 ◽  
pp. 133-135 ◽  
Author(s):  
Wang Sheng Fang ◽  
Pi Yi Du ◽  
Wen Jian Weng ◽  
Gao Rong Han
Keyword(s):  
Dielectric Properties ◽  
Solid State ◽  
Curie Temperature ◽  
Solid State Reaction ◽  
Hysteresis Loops ◽  
Reaction Process ◽  
Conventional Solid State Reaction ◽  
Crystalline Phases ◽  
Impedance Analyzer ◽  
Phase Structures

Srm-3Bi4TimO3m+3 (m =3, 4, 5, and 6) bulk ceramics were prepared by conventional solid-state reaction process. Their phase structures and morphologies were observed by XRD and SEM respectively. The dielectric properties and hysteresis loops of the ceramics were measured by impedance analyzer and hysteresis meter respectively. Results showed that the lattice parameters along the c axis are 32.79, 41.11, 48.83, and 58.17Ǻ for m=3, 4, 5, and 6 respectively. The microstructures of plate-like crystalline phases are shown in all the ceramics with different m. Curie temperature of Srm-3Bi4TimO3m+3 decreases from 668°C to 295°C with increasing m from 3 to 6. The remnant polarizations Pr are 32.46 and 19.44 μC/cm2 for odd m of 3 and 5, and 11.84 and 10.58 μC/cm2 for even m of 4 and 6 respectively.

Study on the Property of Bi2(Mg2/3Nb1.1833Sn0.15)O7 Dielectric Ceramics Doped with Li2CO3

2012 ◽  
Vol 549 ◽  
pp. 749-752
Author(s):  
Hai Tang Hua ◽  
Xin You Huang ◽  
Zhi Wen Zhu ◽  
Yin Qun Hua ◽  
Yan Li
Keyword(s):  
Dielectric Constant ◽  
Dielectric Properties ◽  
Solid State ◽  
Dielectric Loss ◽  
Solid State Reaction ◽  
Piezoelectric Ceramics ◽  
Solid State Reaction Method ◽  
Conventional Solid State Reaction ◽  
Reaction Method ◽  
Dielectric Ceramics

(Bi2-xLix) (Mg2/3Nb1.1833Sn0.15)O7 piezoelectric ceramics were prepared by conventional solid state reaction method. The microstructure and dielectric properties of dielectric ceramics were studied which was doped by different amount of Li2CO3. The experiment results showed that the density of the ceramics would decrease, but have little effect on the microstructure of the ceramics when the amount of the Li2CO3 doped increases. With the increasing of Li2CO3 doped, the dielectric constant(εr) and dielectric loss(tanδ) of dielectric ceramics first decreases and then increases. When tested in 1MHz frequency, the piezoelectric ceramics display the optimum properties tanδ is 0.00009, εr is 163 while Li2CO3 doped amount is 0.05 mol%.

scholarly journals Synthesis and Thermal Properties of Cerium-Dysprosium Oxide

2016 ◽  
Vol 61 (2) ◽  
pp. 965-969 ◽  
Author(s):  
M. Mikuśkiewicz ◽  
M. Stopyra ◽  
G. Moskal
Keyword(s):  
Thermal Properties ◽  
Phase Composition ◽  
Thermal Diffusivity ◽  
Solid State ◽  
Cerium Oxide ◽  
Solid State Reaction ◽  
Synthesis And Characterization ◽  
Equimolar Ratio ◽  
Dysprosium Oxide

Abstract The paper presents results of investigation on synthesis and characterization of cerium-dysprosium oxide. The input powders - dysprosium oxide Dy2O3 and cerium oxide CeO2 - were mixed so as to obtain equimolar ratio of cations, milled in alcohol and synthesized via solid state reaction process at 1350°C under 15MPa in vacuum for 2h. The microstructure, phase composition and thermal properties were analyzed. The obtained material was multiphase. Non-stoichiometric compounds were identified. Thermal diffusivity of investigated material decreased in the temperature range of 25-1000°C from 0,71 to 0,45 mm2/s.

scholarly journals Synthesis and Characterization of Rutile Pigments with Cr and Nb

2014 ◽  
Vol 2014 ◽  
pp. 1-8
Author(s):  
Jan Večeřa ◽  
Iveta Šedová ◽  
Petr Mikulášek ◽  
Petra Šulcová
Keyword(s):  
Particle Size ◽  
Solid State ◽  
Particle Size Distribution ◽  
Solid State Reaction ◽  
Organic Matrix ◽  
Synthesis And Characterization ◽  
Visual Color ◽  
Rutile Pigments ◽  
Titanium Compounds

Rutile pigments Ti1-3xCrxNb2xO2±δ (where x=0, 0.05, 0.10, 0.20, 0.30 and 0.50) prepared by solid-state reaction are investigated. Chromium is chromophore (coloring ion) and niobium is counterion (charge-compensating element for electroneutrality). The effect of composition (x), calcination temperature (850, 900, 950, 1000, 1050, 1100 and 1150°C), and starting titanium compounds (anatase TiO2, hydrated anatase paste, TiOSO4·2H2O, and hydrated Na2Ti4O9 paste) on their color properties into organic matrix and particle size distribution was observed. According to the highest chroma C and visual color evaluation, yellow and orange pigments were selected as in color the most interesting. They have concentration x=0.05 or 0.10 and are prepared from anatase TiO2 and TiOSO4·2H2O at temperature ≥1050°C.

Synthesis and Characterization of High-Quality Polycrystalline Sample NiV2O6 by Solid-State Reaction Technique

2020 ◽  
Vol 62 (6) ◽  
pp. 1024-1032
Author(s):  
M. Atikur Rahman ◽  
M. R. Akter ◽  
M. Romana Khatun ◽  
R. Sultana ◽  
M. A. Razzaque Sarker
Keyword(s):  
Solid State ◽  
Solid State Reaction ◽  
Polycrystalline Sample ◽  
Synthesis And Characterization ◽  
High Quality ◽  
Solid State Reaction Technique

Synthesis and characterization of high-voltage cathode material LiNi0.5Mn1.5O4 by one-step solid-state reaction

2005 ◽  
Vol 12 (S1) ◽  
pp. 54-58 ◽  
Author(s):  
Zhi-xing Wang ◽  
Hai-sheng Fang ◽  
Zhou-lan Yin ◽  
Xin-hai Li ◽  
Hua-jun Guo ◽  
...  
Keyword(s):  
Solid State ◽  
Cathode Material ◽  
High Voltage ◽  
Solid State Reaction ◽  
Synthesis And Characterization ◽  
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