Growth and Piezoelectric Properties of Large Size Ca3TaGa3Si2O14 Crystals

CrystEngComm ◽  
2021 ◽  
Author(s):  
Kainan Xiong ◽  
Sheng wang ◽  
Xiaoniu Tu ◽  
Zhen-Yong Man ◽  
Yanqing Zheng ◽  
...  
Keyword(s):  
High Temperature ◽  
Piezoelectric Material ◽  
Piezoelectric Properties ◽  
Czochralski Method ◽  
Large Size

Ca3TaGa3Si2O14 (CTGS) crystal is an excellent high temperature piezoelectric material. 4~6 inches CTGS crystals were successfully grown by Czochralski method. The (110), (100) and (001) faces were strongly exposed, respectively....

scholarly journals Numerical Analysis of Difficulties of Growing Large-Size Bulk β-Ga2O3 Single Crystals with the Czochralski Method

Crystals ◽  
2020 ◽  
Vol 11 (1) ◽  
pp. 25
Author(s):  
Xia Tang ◽  
Botao Liu ◽  
Yue Yu ◽  
Sheng Liu ◽  
Bing Gao
Keyword(s):  
Crystal Growth ◽  
Single Crystals ◽  
Czochralski Method ◽  
Liquid Interface ◽  
Spiral Growth ◽  
Growth Time ◽  
Large Size ◽  
Crystal Diameter ◽  
Solid Liquid Interface ◽  
Solid Liquid

The difficulties in growing large-size bulk β-Ga2O3 single crystals with the Czochralski method were numerically analyzed. The flow and temperature fields for crystals that were four and six inches in diameter were studied. When the crystal diameter is large and the crucible space becomes small, the flow field near the crystal edge becomes poorly controlled, which results in an unreasonable temperature field, which makes the interface velocity very sensitive to the phase boundary shape. The effect of seed rotation with increasing crystal diameter was also studied. With the increase in crystal diameter, the effect of seed rotation causes more uneven temperature distribution. The difficulty of growing large-size bulk β-Ga2O3 single crystals with the Czochralski method is caused by spiral growth. By using dynamic mesh technology to update the crystal growth interface, the calculation results show that the solid–liquid interface of the four-inch crystal is slightly convex and the center is slightly concave. With the increase of crystal growth time, the symmetry of cylindrical crystal will be broken, which will lead to spiral growth. The numerical results of the six-inch crystal show that the whole solid–liquid interface is concave and unstable, which is not conducive to crystal growth.

Piezoelectric properties and temperature stabilities of Mn- and Cu-modified BiFeO3–BaTiO3 high temperature ceramics

2013 ◽  
Vol 33 (6) ◽  
pp. 1177-1183 ◽  
Author(s):  
Huabin Yang ◽  
Changrong Zhou ◽  
Xinyu Liu ◽  
Qin Zhou ◽  
Guohua Chen ◽  
...  
Keyword(s):  
High Temperature ◽  
Piezoelectric Properties

Growth and characterization of large-size bismuth germanate single crystals by low thermal gradient Czochralski method

1999 ◽  
Vol 197 (4) ◽  
pp. 865-873 ◽  
Author(s):  
R.V Anantha Murthy ◽  
M Ravikumar ◽  
A Choubey ◽  
Krishan Lal ◽  
Lyudmila Kharachenko ◽  
...  
Keyword(s):  
Single Crystals ◽  
Thermal Gradient ◽  
Czochralski Method ◽  
Bismuth Germanate ◽  
Large Size

scholarly journals The (1-x)BiFeO3-xBaTiO3-Bi(Zn0.5Ti0.5)O3 high temperature lead-free piezoelectric ceramics with strong piezoelectric properties

2021 ◽  
Author(s):  
Yuanyuan Sun ◽  
Huabin Yang ◽  
Jiwen Xu ◽  
Weiran Huang ◽  
Minhong Jiang ◽  
...  
Keyword(s):  
High Temperature ◽  
Curie Temperature ◽  
Piezoelectric Properties ◽  
Ferroelectric Properties ◽  
Temperature Fields ◽  
Depolarization Temperature ◽  
Ceramic Structure ◽  
Low Dielectric ◽  
Tan Δ ◽  
Piezoelectric Performance

Abstract The structure, microstructure, piezoelectric properties, ferroelectric properties and Curie temperature of (1- x )BiFeO 3 - x BaTiO 3 -Bi(Zn 0.5 Ti 0.5 )O 3 +MnO 2 +Li 2 CO 3 ceramics were investigated experimentally by improved solid-state reaction approach. The crystalline structures were examined by X-ray diffractometry. When x = 0.3, the rhombohedral and pseudocubic phases coexist in the ceramic structure. It is considered that the morphotropic phase boundary was formed here. At the same time, the piezoelectric performance d 33 , Curie temperature T C , and depolarization temperature are as high as 184 pC/N, 550°C, 530°C at x = 0.3, respectively. It is worth noting that when x = 0.24, the ceramics have a high T C = 580°C and low dielectric loss tan δ = 1.9%. These results show that the BFBT-BZT system ceramics are applicable ceramics with high piezoelectric properties in high temperature fields.

Large enhancement of piezoelectric properties and resistivity in Cu/Ta co‐doped Bi 4 Ti 3 O 12 high‐temperature piezoceramics

2019 ◽  
Vol 102 (12) ◽  
pp. 7366-7375 ◽  
Author(s):  
Xudong Li ◽  
Zhenning Chen ◽  
Linsheng Sheng ◽  
Juan Du ◽  
Wangfeng Bai ◽  
...  
Keyword(s):  
High Temperature ◽  
Piezoelectric Properties ◽  
Large Enhancement ◽  
Co Doped

High temperature piezoelectric properties of yttrium calcium oxyborate single crystals

2010 ◽  
Vol 4 (5-6) ◽  
pp. 103-105 ◽  
Author(s):  
Fapeng Yu ◽  
Shujun Zhang ◽  
Xian Zhao ◽  
Duorong Yuan ◽  
Qingming Wang ◽  
...  
Keyword(s):  
High Temperature ◽  
Single Crystals ◽  
Piezoelectric Properties
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