Preparation of Bismuth Copper Based Perovskite-Type Ceramics and their Piezoelectric Properties

2013 ◽  
Vol 566 ◽  
pp. 85-88 ◽  
Author(s):  
Atsushi Shimamura ◽  
Ichiro Fujii ◽  
Kouichi Nakashima ◽  
Yoshihiro Kuroiwa ◽  
Satoshi Wada
Keyword(s):  
Crystal Structure ◽  
Curie Temperature ◽  
Relative Density ◽  
Piezoelectric Properties ◽  
Perovskite Phase ◽  
Piezoelectric Constant ◽  
Single Perovskite Phase ◽  
Perovskite Type ◽  
Dielectric And Piezoelectric Properties

The structural, and dielectric and piezoelectric properties of 0.3BaTiO3- 0.1x(x= Bi (Mg1/2Ti1/2)O3, Bi (Cu1/2Ti1/2)O3, Bi (Cu2/3Nb1/3)O3, (Bi1/2K1/2)(Cu1/3Nb2/3)O3) 0.6BiFeO3ceramics were studied. The relative density of all the samples was more than 94 %. A single perovskite phase was obtained for the samples, and the crystal structure was pseudo-cubic. The Curie temperature ofx=Bi (Mg1/2Ti1/2)O3and Bi (Cu1/2Ti1/2)O3system ceramics was higher than 400 °C. The apparent piezoelectric constantd33* ofx=Bi (Mg1/2Ti1/2)O3, Bi (Cu1/2Ti1/2)O3, Bi (Cu2/3Nb1/3)O3and (Bi1/2K1/2)(Cu1/3Nb2/3)O3system ceramics was 311, 212, 75 and 70 pm/V, respectively.

Chemical Composition of Dielectric and Piezoelectric Properties for BaTiO3-Bi (Mg1/2Ti1/2)O3-BiFeO3 System Ceramics

2013 ◽  
Vol 582 ◽  
pp. 84-87 ◽  
Author(s):  
Ryuta Mitsui ◽  
Ichiro Fujii ◽  
Kouichi Nakashima ◽  
Nobuhiro Kumada ◽  
Yoshihiro Kuroiwa ◽  
...  
Keyword(s):  
Crystal Structure ◽  
Curie Temperature ◽  
Piezoelectric Properties ◽  
Perovskite Phase ◽  
Rhombohedral Phase ◽  
Cubic Phase ◽  
X Ray Diffraction ◽  
Synthesis And Crystal Structure ◽  
X Ray ◽  
Dielectric And Piezoelectric Properties

1-x-y)BaTiO3-xBi (Mg1/2Ti1/2)O3-yBiFeO3 ceramics were prepared by a conventional solidstate synthesis, and crystal structure and electric properties were investigated. Synchrotron X-ray diffraction pattern revealed that a single perovskite phase was obtained for samples at x=0.05-0.15, y=0.46.5-73.5. Splitting of the (111) peak was observed when (x, y) = (0.050, 0.685) and (0.050, 0.735) indicating that crystal structure of samples changed from a pseudo-cubic phase to a rhombohedral phase with increasing BF. As the BF content increased, the Curie temperature increased. The largest maximum strain (Smax) over the applied maximum electric field (Emax) value (Smax / Emax) of 300 pm/V was observed for 0.365BT-0.050BMT-0.585BF at 25 °C and 1Hz with the Curie temperature of 390 °C.

Single Phase Formation and Electric Properties of Bismuth Niobium Based Perovskite-Type Oxides

2011 ◽  
Vol 485 ◽  
pp. 81-84 ◽  
Author(s):  
Atsushi Shimamura ◽  
Ichiro Fujii ◽  
Nobuhiro Kumada ◽  
Kouichi Nakashima ◽  
Masaki Azuma ◽  
...  
Keyword(s):  
Single Phase ◽  
Piezoelectric Properties ◽  
Perovskite Phase ◽  
Peak Temperature ◽  
Large Field ◽  
Local Maxima ◽  
Single Perovskite Phase ◽  
Perovskite Type ◽  
Single Phase Formation ◽  
Dielectric And Piezoelectric Properties

The structural, and dielectric and piezoelectric properties of (1-x)BaTiO3 – x Bi1/2K1/2(X1/3Nb2/3)O3(X=Cu, X=Mg or X=Zn) ceramic were studied. The single perovskite phase was observed when x≤0.5 for X=Cu and Mg and x≤0.2 for X=Zn. As x increased, the dielectric constant peak temperature and piezoelectric properties continuously decreased for X=Mg and Zn. On the other hand, those of X=Cu possessed a local maxima at x=0.7 and the peak temperature was 200°C and the large field piezoelectric constant,d33*, was 94 pC/N.

Molten Salts Synthesis and Dielectric Properties of PMN-PT Ceramics

2005 ◽  
Vol 475-479 ◽  
pp. 1153-1156 ◽  
Author(s):  
Shi Xi Zhao ◽  
Qiang Li ◽  
Feng Bing Song
Keyword(s):  
Particle Size ◽  
Dielectric Properties ◽  
Molten Salts ◽  
Piezoelectric Properties ◽  
Perovskite Phase ◽  
Theoretical Density ◽  
Densification Process ◽  
Single Perovskite Phase ◽  
Dielectric And Piezoelectric Properties

Single perovskite phase PMN-PT powders had been synthesized using molten salts method. The powders of PMN-PT synthesized by MSS had submicrometer particle size and high sinterability, which beneficial to an enhancement of the densification process and a decrease of the sintering temperatures. These advantages have an important bearing on the dielectric properties of these materials. The density of ceramics sintered at 1175°C was up to 98% of the theoretical density. These ceramics had excelled dielectric and piezoelectric properties.

Dielectric and Piezoelectric Properties of Niobium-modified BiInO3–PbTiO3 Perovskite Ceramics with High Curie Temperatures

2005 ◽  
Vol 20 (8) ◽  
pp. 2067-2071 ◽  
Author(s):  
Shujun Zhang ◽  
Ru Xia ◽  
Clive A. Randall ◽  
Thomas R. Shrout ◽  
Runrun Duan ◽  
...  
Keyword(s):  
Electrical Resistivity ◽  
Dielectric Loss ◽  
Curie Temperature ◽  
Piezoelectric Coefficient ◽  
Elevated Temperatures ◽  
Piezoelectric Properties ◽  
Perovskite Phase ◽  
Perovskite Ceramics ◽  
Curie Temperatures ◽  
Dielectric And Piezoelectric Properties

Piezoelectric ceramics with TC > 500 °C were projected in the perovskite BiInO3–PbTiO3 (BIPT) system based on their low tolerance factor (∼0.884). However, a stable perovskite phase could be synthesized only when the PbTiO3 (PT) content was greater than 75%. Furthermore, the large tetragonality (c/a > 1.08) and low electrical resistivity made the ceramics difficult to pole. Niobium-modified BIPT ceramics with PT contents of 80% and 85% were found to possess significantly lower dielectric loss at elevated temperatures, making it possible to polarize the materials. Piezoelectric properties were measured for a BIPT85–1.5 mol% Nb composition with a Curie temperature of 542 °C; the longitudinal piezoelectric coefficient and coercive field were found to be 60 pC/N and 125 kV/cm, respectively.

Dielectric and Piezoelectric Properties of Na0.42K0.08Bi0.5 TiO3 and Na0.45K0.05Bi0.5TiO3 Ceramics

2007 ◽  
Vol 280-283 ◽  
pp. 251-254 ◽  
Author(s):  
Su Chuan Zhao ◽  
Lina Zhang ◽  
Guo Rong Li ◽  
Liao Ying Zheng ◽  
Ai Li Ding
Keyword(s):  
Room Temperature ◽  
Piezoelectric Properties ◽  
Perovskite Phase ◽  
X Ray Diffraction ◽  
Depolarization Temperature ◽  
X Ray ◽  
Single Perovskite Phase ◽  
Dielectric And Piezoelectric Properties ◽  
Rhombohedral Symmetry ◽  
Ferroelectric And Piezoelectric Properties

Na0.42K0.08Bi0.5TiO3 and Na0.45K0.05Bi0.5TiO3 ceramics were fabricated by the solid-state reaction. The structures were determined by X-ray diffraction. Dielectric, ferroelectric and piezoelectric properties of the ceramics were measured and discussed. The ceramics have a single perovskite phase with rhombohedral symmetry at room temperature. The thermal variations of the permittivity follow the law 1/ e − 1/ em = C(T − Tm)2 which is the character of typical relax ferroelectrics, when temperature is higher than the temperature of the maximum of dielectric constant (Tm). The depolarization temperature (Td) of spontaneous polarization is 215oC for Na0.45K0.05Bi0.5TiO3 and 152oC for Na0.42K0.08Bi0.5TiO3 respectively. There exist two different dielectric behaviors of the Na0.42K0.08Bi0.5TiO3 ceramic, without and after poling. Na0.45K0.05Bi0.5TiO3 possesses relatively high kt and Td. The use for device application has been indicated.

scholarly journals Effects of alternating current poling on the dielectric and piezoelectric properties of Pb(In0.5Nb0.5)O3–PbTiO3 crystals with a high Curie temperature

RSC Advances ◽  
2021 ◽  
Vol 11 (21) ◽  
pp. 12826-12832
Author(s):  
Junjie Xiong ◽  
Zujian Wang ◽  
Xiaoming Yang ◽  
Rongbing Su ◽  
Xifa Long ◽  
...  
Keyword(s):  
Curie Temperature ◽  
Piezoelectric Properties ◽  
Alternating Current ◽  
High Curie Temperature ◽  
Dielectric And Piezoelectric Properties

The ε33T/ε0 and d33 values of ACP 0.66PIN–0.34PT crystals are shown to be 3070 and 1400 pC N−1, respectively, which are 14% and 18% larger than those of a DCP sample, owing to the enhancement of both intrinsic and extrinsic contributions.

Effects of Barium Substitution on the Structure and Properties of PSZT Piezoelectric Ceramics

2010 ◽  
Vol 650 ◽  
pp. 103-108
Author(s):  
Yu Hua Feng ◽  
Tie Zheng Pan ◽  
Xiang Qian Shen ◽  
Hao Jie Song ◽  
Li Ping Guo
Keyword(s):  
Curie Temperature ◽  
Structural Changes ◽  
Piezoelectric Properties ◽  
Relative Dielectric Constant ◽  
Piezoelectric Ceramics ◽  
X Ray Diffraction ◽  
Piezoelectric Strain ◽  
High Dielectric ◽  
Dielectric And Piezoelectric Properties ◽  
Piezoelectric Strain Constant

Piezoelectric ceramics with appropriate curie temperatures and high dielectric and piezoelectric performances are attractive for formations of ceramic/polymer piezoelectric composites. The PSZT ceramics with compositions of 0.98Pb1.0-xBaxTi0.48Zr0.52O3-0.02PbSbO3 (x=0.14~0.24) have been prepared by a conventional solid reaction process. The ceramic structures are analyzed by X-ray diffraction and the barium substitution leads to structural changes of the tetragonal and rhombohedral phases which constitute the perovskite PSZT ceramics, and lattice distortions. The curie temperature almost linearly decreases from 226 °C to 141 °C corresponding the barium content increases from 0.14 to 0.24 in the ceramics. The dielectric and piezoelectric properties are largely influenced by the barium substitution and when the barium content at vicinity of 0.22, the piezoelectric strain constant d33 exhibits a dramatic change. It is found that as the barium content around 0.22, the PSZT ceramic specimen is characterized with a low curie temperature Tc=156 °C, and satisfied dielectric and piezoelectric properties with the relative dielectric constant εr=5873, dielectric loss factor tanδ=0.0387, piezoelectric strain constant d33=578 pC/N.

Crystal structure, dielectric and piezoelectric properties of Ta/W codoped Bi3TiNbO9 Aurivillius phase ceramics

2014 ◽  
Vol 14 (12) ◽  
pp. 1861-1866 ◽  
Author(s):  
Zhihang Peng ◽  
Dongxu Yan ◽  
Qiang Chen ◽  
Deqiong Xin ◽  
Dan Liu ◽  
...  
Keyword(s):  
Crystal Structure ◽  
Piezoelectric Properties ◽  
Aurivillius Phase ◽  
Dielectric And Piezoelectric Properties

Effects of Fe2O3 addition on microstructure and piezoelectric properties of 0.2PZN–0.8PZT ceramics

2005 ◽  
Vol 20 (10) ◽  
pp. 2670-2675 ◽  
Author(s):  
Man-Kang Zhu ◽  
Peng-Xian Lu ◽  
Yu-Dong Hou ◽  
Hao Wang ◽  
Hui Yan
Keyword(s):  
Grain Size ◽  
Curie Temperature ◽  
Phase Analysis ◽  
Perovskite Structure ◽  
Piezoelectric Properties ◽  
Sharp Decrease ◽  
Phase Evolution ◽  
Small Addition ◽  
Microstructure Change ◽  
Dielectric And Piezoelectric Properties

In this work, the effect of Fe2O3 addition on the microstructure and piezoelectric properties of Pb(Zn1/3Nb2/3)0.2Ti0.4Zr0.4O3 (0.2PZN–0.8PZT) ceramics were investigated. The studies indicated that the solution limit of Fe2O3 in the lattice of perovskite structure was about 0.1 wt%. Phase analysis shows that small addition of doping Fe2O3 results in the phase evolution from rhombohedral to tetragonal, sharp decrease of the Curie temperature, and remarkable increase of the grain size. Meanwhile, Fe2O3 addition within the solution limit led to the increase of the εr, kp, and d33. It is believed that the variation in the dielectric and piezoelectric properties are closely related to the microstructure change, phase evolution, and tetragonal distortion as Fe2O3 added.

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