Dielectric behavior of barium modified strontium bismuth titanate ceramic

2014 ◽  
Author(s):  
P. Nayak ◽  
T. Badapanda ◽  
S. Anwar ◽  
S. Panigrahi
Keyword(s):  
Bismuth Titanate ◽  
Dielectric Behavior ◽  
Titanate Ceramic

Effect of simultaneous substitution of La and Mn on dielectric behavior of barium titanate ceramic

2007 ◽  
Vol 42 (14) ◽  
pp. 5490-5496 ◽  
Author(s):  
Om Parkash ◽  
Devendra Kumar ◽  
R. K. Dwivedi ◽  
K. K. Srivastava ◽  
Prakash Singh ◽  
...  
Keyword(s):  
Barium Titanate ◽  
Dielectric Behavior ◽  
Barium Titanate Ceramic ◽  
Simultaneous Substitution ◽  
Titanate Ceramic

Preparation and Use of Mosaic Target for the Deposition of Ferroelectric Bismuth Titanate Thin Films

1994 ◽  
Vol 361 ◽  
Author(s):  
P.K. Ghosh ◽  
M.E. Azimi
Keyword(s):  
Thin Films ◽  
Bismuth Titanate ◽  
Ion Beam ◽  
Ferroelectric Properties ◽  
Dielectric Behavior ◽  
Large Area ◽  
Film Properties ◽  
Low Field ◽  
Post Annealing ◽  
Substrate Temperatures

ABSTRACTIon beam sputter deposition using a Kaufman source is a well-established technique for fabricating thin films. This method has the capability for yielding smooth surfaces and depositing uniform films over a large area. We have used this technique, in the past, with a 5″ diameter target to deposit smooth ferroelectric bismuth titanate (Bi4Ti3O12) films. One of the major obstacles was fabricating the large target with the desired composition. To reduce cost by simplifying the target preparation process we developed a ‘mosaic’ target to deposit ferroelectric Bi4Ti3O12 films. Films were deposited at different substrate temperatures. Measurements show that the post-annealing of the deposited films results in measurable ferroelectric properties and enhanced low field dielectric behavior in the films. The discussion will include the target fabrication, the observed properties of the resultant films, and the effect of the deposition and post-annealing temperatures on the film properties.

Particle transport mode during flash sintering of sodium bismuth titanate ceramic

2019 ◽  
Vol 45 (10) ◽  
pp. 13269-13274 ◽  
Author(s):  
Ruike Shi ◽  
Yongping Pu ◽  
Jingwei Li ◽  
Xu Guo ◽  
Wen Wang ◽  
...  
Keyword(s):  
Particle Transport ◽  
Bismuth Titanate ◽  
Sodium Bismuth Titanate ◽  
Transport Mode ◽  
Flash Sintering ◽  
Titanate Ceramic

Raman Spectra of Bismuth Titanate Ceramics

2007 ◽  
Vol 555 ◽  
pp. 243-247 ◽  
Author(s):  
Z.Ž. Lazarević ◽  
N.Ž Romčević ◽  
M.J. Romčević ◽  
B.D. Stojanović
Keyword(s):  
Raman Spectroscopy ◽  
Solid State ◽  
Zirconium Oxide ◽  
Ball Mill ◽  
Bismuth Titanate ◽  
Ferroelectric Material ◽  
Spectroscopy Analysis ◽  
Conventional Solid State Reaction ◽  
Titanate Ceramics ◽  
Titanate Ceramic

Bismuth titanate is a typical layer-structured ferroelectric material and belongs to the Aurivilius type-structure compounds family. A bismuth titanate ceramic material could be obtained by mechanically activated synthesis after thermal treatment at a temperature slightly lower than in conventional solid-state reaction. In this case bismuth titanate was prepared through mechanochemical synthesis starting from bismuth oxide and titanium oxide in rutile form. The mixture of oxides was milled in a zirconium oxide jar in a planetary ball-mill in intervals from 1 to 12 hours. The ratio of powders to zirconium oxide balls during milling was 1:20. Bismuth titanate was formed after 1 h. The Raman spectroscopy analysis was performed.

EFFECT OF Co3O4 NANOPARTICLE ON THE PROPERTY OF BARIUM TITANATE CERAMIC

2011 ◽  
Vol 01 (02) ◽  
pp. 229-235 ◽  
Author(s):  
W. C. VITTAYAKORN ◽  
D. BUNJONG ◽  
A. RUANGPHANIT ◽  
N. VITTAYAKORN
Keyword(s):  
Barium Titanate ◽  
Dielectric Behavior ◽  
Cubic Phase ◽  
X Ray Diffraction ◽  
Cell Parameters ◽  
Fine Grain ◽  
Barium Titanate Ceramic ◽  
Lower Temperature ◽  
Titanate Ceramics ◽  
Titanate Ceramic

Effects of the Co3O4 nanoparticle on the phase formation, microstructure and dielectric properties of barium titanate ceramics are investigated in this study. Co3O4 -doped BaTiO3 ceramics were prepared by the conventional mixed oxide method followed by normal sintering in air. Systematic studies of X-ray diffraction (XRD), scanning electron microscopy and dielectric spectroscopy with varying doping levels were performed. The cell parameters, tetragonality and crystallite size of doped ceramics also were calculated from XRD data. Results showed that the single phase of BaTiO3 gave no evidence of unwanted peak forms in any of the samples. Cubic phase occurred after adding Co3O4 at 0.25 mol%. Various grain sizes and shapes were found in this system. Finally, adding Co3O4 in BaTiO3 ceramics resulted in shifting of the Curie point to a lower temperature. The composition, x = 0.25, showed different dielectric behavior, which related to appearance of the cubic phase and fine grain microstructure.

Effective grain alignment in bismuth titanate ceramic by centrifugal force

2006 ◽  
Vol 21 (7) ◽  
pp. 1830-1835 ◽  
Author(s):  
Ping-Hua Xiang ◽  
Yoshiaki Kinemuchi ◽  
Koji Watari ◽  
Hirohide Ishiguro ◽  
Fei Cao ◽  
...  
Keyword(s):  
Centrifugal Force ◽  
High Speed ◽  
Bismuth Titanate ◽  
Scanning Electron Micrographs ◽  
X Ray Diffraction ◽  
Grain Alignment ◽  
High Speed Rotation ◽  
Speed Rotation ◽  
High Orientation ◽  
Titanate Ceramic

Effective grain alignment in bismuth titanate ceramic was successfully realized by a novel pressure sintering technology, centrifugal sintering, in which centrifugal force is introduced by high-speed rotation of materials during the process of sintering. X-ray diffraction analyses indicated a very high orientation degree with a Lotgering factor f of ∼0.96 in centrifugal sintered samples. Scanning electron micrographs revealed that the platelike grains are well oriented with their c axes parallel to centrifugal force. The mechanism responsible for grain alignment with introduction of centrifugal force was tentatively proposed.

TRANSITION OF MODIFIED LAYERED STRUCTURED BISMUTH TITANATE FROM NORMAL TO RELAXOR FERROELECTRIC STATE

2006 ◽  
Vol 20 (25) ◽  
pp. 1597-1606
Author(s):  
A. SIDDESHWAR ◽  
G. PRASAD ◽  
G. S. KUMAR
Keyword(s):  
Solid State ◽  
Phase Formation ◽  
Wide Temperature Range ◽  
Bismuth Titanate ◽  
Dielectric Behavior ◽  
Relaxor Ferroelectric ◽  
Dielectric Measurements ◽  
Ferroelectric State ◽  
Temperature Range ◽  
State Technique

The Aurivillius-type compounds with generic formula Sr x Bi 4-x Nb x Ti 3-x O 12 (with x = 0, 0.2, 0.4, 0.6, 0.8 and 1.0) have been synthesized to investigate the effect of Sr and Nb substitution on the bismuth titanate, by a conventional solid state technique. The phase formation of the compound was confirmed through XRD. The dielectric measurements were made at different constant frequencies of 10 kHz, 50 kHz, 100 kHz, 500 kHz and 1 MHz over a wide temperature range. The samples showed a transition from normal ferroelectric behavior to relaxor dielectric behavior with an increasing value of "x".

scholarly journals Microstructures and PTCR Properties of Bismuth Metal/Strontium-Bismuth-Titanate Ceramic Composites

1999 ◽  
Vol 40 (5) ◽  
pp. 404-407 ◽  
Author(s):  
Takahiro Sawaguchi ◽  
Atsunori Kamegawa ◽  
Hitoshi Takamura ◽  
Masuo Okada
Keyword(s):  
Bismuth Titanate ◽  
Ceramic Composites ◽  
Titanate Ceramic
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