Temperature dependence of the dielectric dispersion and ferroelectric properties of neodymium doped bismuth titanate ceramics

2006 ◽  
Vol 16 (4) ◽  
pp. 373-377 ◽  
Author(s):  
Jin Soo Kim ◽  
Ill Won Kim
Keyword(s):  
Temperature Dependence ◽  
Bismuth Titanate ◽  
Ferroelectric Properties ◽  
Dielectric Dispersion ◽  
Titanate Ceramics

Ferroelectric Properties of Bismuth Titanate Ceramics by Dy3+/V5+ Substitution

2011 ◽  
Vol 412 ◽  
pp. 306-309
Author(s):  
Chong Qing Huang ◽  
Min Chen ◽  
X.A. Mei ◽  
Y.H. Sun ◽  
J. Liu
Keyword(s):  
Coercive Field ◽  
Remanent Polarization ◽  
Bismuth Titanate ◽  
Ferroelectric Properties ◽  
Polycrystalline Structure ◽  
Oriented Polycrystalline ◽  
Titanate Ceramics

The ferroelectricity of Bi3.25Dy0.75Ti3O12(BDT), and Bi3.25Dy0.75Ti2.97V0.03O12(BDTV) ceramics prepared at 1100°C by a conventional ceramic technique was investigated. These ceramics possess random-oriented polycrystalline structure. The remanent polarization (Pr) and coercive field (Ec) of the BDT ceramics are 15 µC/cm2and 64kV/cm, respectively. Furthermore, V substitution improves the Prvalue of the BDT ceramics up to 23 μC/cm2, which is much larger than that of the BDT ceramics. Therefore, co-sustitution of D and V in Bi4Ti3O12(BIT) ceramic is effective for the improvement of its ferroelectricity.

Ferroelectric Properties of Bismuth Titanate Ceramics by Sm3+/V5+ Substitution

2007 ◽  
Vol 280-283 ◽  
pp. 167-170
Author(s):  
M. Chen ◽  
Zu Li Liu ◽  
Kai Lun Yao
Keyword(s):  
Coercive Field ◽  
Remanent Polarization ◽  
Bismuth Titanate ◽  
Ferroelectric Properties ◽  
Polycrystalline Structure ◽  
Co Substitution ◽  
Oriented Polycrystalline ◽  
Bst Ceramics ◽  
Titanate Ceramics

The ferroelectricity of Bi3.2Sm0.8Ti3O12 (BST) and Bi3.2Sm0.8Ti2.97V0.03O12 (BSTV)ceramics prepared at 1100oC by a conventional ceramic technique is investigated. These ceramics possess random-oriented polycrystalline structure. The remanent polarization (Pr) and coercive field (Ec) of the BST ceramics are 16 µC/cm2 and 62kV/cm, respectively. Furthermore, V5+ substitution improves the Pr value of the BST ceramics up to 25µC/cm2, which is larger than that of the BST ceramics. Therefore, the co-substitution of Sm3+ and V5+ in Bi4Ti3O12 (BIT) ceramics is effective for the improvement of its ferroelectricity.

Impedance Spectra and Ferroelectric Properties of Bismuth Titanate Ceramics by Nd3+/V5+ Substitution

2012 ◽  
Vol 624 ◽  
pp. 174-177 ◽  
Author(s):  
Min Chen ◽  
X.A. Mei ◽  
Rui Fang Liu ◽  
C.Q. Huang ◽  
J. Liu
Keyword(s):  
Coercive Field ◽  
Remanent Polarization ◽  
Bismuth Titanate ◽  
Ferroelectric Properties ◽  
Impedance Spectra ◽  
Polycrystalline Structure ◽  
Oriented Polycrystalline ◽  
Titanate Ceramics

The ferroelectricity of Bi3.25Nd0.75Ti3O12 (BNT), and Bi3.25Nd0.75Ti2.97V0.03O12 (BNTV) ceramics prepared at 1100°C by a conventional ceramic technique was investigated. These ceramics possess random-oriented polycrystalline structure. The remanent polarization (Pr) and coercive field (Ec) of the BNT ceramics are 16 µC/cm2 and 65kV/cm, respectively. Furthermore, V substitution improves the Pr value of the BNTV ceramics up to 23 μC/cm2, which is much larger than that of the BNT ceramics. Therefore, co-sustitution of Nd and V in Bi4Ti3O12 ceramic is effective for the improvement of its ferroelectricity.

Fabrication and Ferroelectric Properties of Ba-Doped Strontium Bismuth Titanate Ceramics

2007 ◽  
Vol 280-283 ◽  
pp. 163-166
Author(s):  
Dan Xie ◽  
Wei Pan ◽  
Zhi Min Dang ◽  
Tian Ling Ren
Keyword(s):  
Electron Microscopy ◽  
Remanent Polarization ◽  
Bismuth Titanate ◽  
Sintering Temperature ◽  
Ferroelectric Properties ◽  
Sol Gel ◽  
Molar Ratio ◽  
Sol Gel Process ◽  
Titanate Ceramics ◽  
Coercive Electric Field

In the paper, the microstructure and properties of Sr1-xBaxBi4Ti4O15 (SBBT) ceramics with different Ba contents were investigated. SBBT ceramics were fabricated by means of the method combining Sol-Gel process and ordinary firing. The morphology will change when Ba2+ is doped in SrBi4Ti4O15 (SBTi), which will lead to the change of structure and ferroelectric properties. The microstructure of SBTi and BaBi4Ti4O15 (BBTi) ceramics were characterized by scan electron microscopy (SEM). With the increase of Ba2+ doping contents, the sintering temperature of SBBT ceramics decreases, 1120°C for SBTi and 1060°C for BBTi. BBTi ceramics contain more and larger plate-like grains than that in SBTi, the diameter of the grains in BBTi is about 8~10 µm, the thickness is about 2.5 µm. With the increase of Ba2+ doping contents, remanent polarization (Pr) and coercive electric-field (Ec) increase first and then decrease. At the molar ratio of Sr:Ba=0.5:0.5, SBBT ceramics exhibited the highest Pr and Ec.

Ferroelectric Properties of Bismuth Titanate Ceramics by Pm3+/V5+ Substitution

2013 ◽  
Vol 591 ◽  
pp. 228-231
Author(s):  
Fang Tian ◽  
X.A. Mei ◽  
M. Chen ◽  
C.Q. Huang
Keyword(s):  
Coercive Field ◽  
Remanent Polarization ◽  
Bismuth Titanate ◽  
Ferroelectric Properties ◽  
Polycrystalline Structure ◽  
Oriented Polycrystalline ◽  
Titanate Ceramics

The ferroelectricity of Bi3.25Pm0.75Ti3O12 (BPT), and Bi3.25Pm0.75Ti2.97V0.03O12 (BPTV) ceramics prepared at 1200°C by a conventional ceramic technique was investigated. These ceramics possess random-oriented polycrystalline structure. The remanent polarization (Pr) and coercive field (Ec) of the BPT ceramic are 16 μC/cm2 and 62kV/cm, respectively. Furthermore, V substitution improves the Pr value of the BPT ceramic up to 25 μC/cm2 which is larger than that of the BPT ceramic. Therefore, co-sustitution of Pm and V in Bi4Ti3O12 (BIT) ceramic is effective for the improvement of its ferroelectricity.

Ferroelectric Properties of Bismuth Titanate Ceramics by Sm3+/V5+ Substitution

2012 ◽  
Vol 512-515 ◽  
pp. 1333-1336 ◽  
Author(s):  
Chong Qing Huang ◽  
Min Chen ◽  
R.F. Liu ◽  
X.A. Mei ◽  
J. Liu
Keyword(s):  
Coercive Field ◽  
Remanent Polarization ◽  
Bismuth Titanate ◽  
Ferroelectric Properties ◽  
Polycrystalline Structure ◽  
Oriented Polycrystalline ◽  
Bst Ceramics ◽  
Titanate Ceramics

The ferroelectricity of Bi3.25Sm0.75Ti3O12 (BST), and Bi3.25Sm0.75Ti2.97V0.03O12 (BSTV) ceramics prepared at 1100°C by a conventional ceramic technique was investigated. These ceramics possess random-oriented polycrystalline structure. The remanent polarization (Pr) and coercive field (Ec) of the BST ceramics are 16 µC/cm2 and 64kV/cm, respectively. Furthermore, V substitution improves the Pr value of the BST ceramics up to 25 μC/cm2, which is much larger than that of the BST ceramics. Therefore, co-sustitution of Sm and V in is effective for the improvement of the ferroelectricity of Bi4Ti3O12 ceramic.

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