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

Enhanced piezoelectric properties of Nb and Mn co-doped CaBi4Ti4O15 high temperature piezoceramics

2015 ◽  
Vol 63 ◽  
pp. 129-133 ◽  
Author(s):  
Zong-Yang Shen ◽  
Huajun Sun ◽  
Yanxue Tang ◽  
Yueming Li ◽  
Shujun Zhang
Keyword(s):  
High Temperature ◽  
Piezoelectric Properties ◽  
Co Doped

Enhanced piezoelectric properties and electrical resistivity in W/Cr co-doped CaBi2Nb2O9 high-temperature piezoelectric ceramics

2019 ◽  
Vol 45 (5) ◽  
pp. 6004-6011 ◽  
Author(s):  
Zhenning Chen ◽  
Linsheng Sheng ◽  
Xudong Li ◽  
Peng Zheng ◽  
Wangfeng Bai ◽  
...  
Keyword(s):  
Electrical Resistivity ◽  
High Temperature ◽  
Piezoelectric Properties ◽  
Piezoelectric Ceramics ◽  
Co Doped

scholarly journals Effect of cobalt (nickel) oxide on the properties of zinc–titanium sorbents for high temperature desulphurization of model coal gas

2021 ◽  
Author(s):  
M. Chomiak ◽  
J. Trawczyński ◽  
M. Zawadzki
Keyword(s):  
High Temperature ◽  
Sorption Capacity ◽  
Catalytic Effect ◽  
Mixed Oxides ◽  
Mixed Metal Oxides ◽  
Coal Gas ◽  
Cobalt Nickel ◽  
Texture Structure ◽  
Cobalt Nickel Oxide ◽  
Co Doped

AbstractZn–Ti–Co(Ni) sorbents for H2S removal from model hot coal were prepared and characterized. Effects of cobalt (Co) and nickel (Ni) on the sorbents texture, structure, H2S sorption capacity and regeneration properties were determined. TiO2 formed mixed metal oxides with CoO and NiO in the fresh sorbents, while TiO2 and nanocrystalline sulfides of Zn, Co, Ni were found in sulphided ones. The oxidative regeneration of sulphided sorbents re-formed mixed oxides. Sorption capacity of studied materials increased along with an increase of the amount of added Co (Ni) and also with the number of work cycles. Co-doped Zn–Ti materials adsorbed up to 244% more sulfur than these of Zn–Ti, while Ni-doped materials adsorbed ca. twice more H2S than the corresponding Co-doped sorbents. The addition of Co (Ni) decreased the temperature of ZnS oxidation. The catalytic effect of the Co (Ni) oxides on the oxidation of ZnS was suggested.

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....

Oxygen Precipitation in Conventional and Nitrogen Co-Doped Heavily Arsenic-Doped Czochralski Silicon Crystals: Oswald Ripening

2009 ◽  
Vol 156-158 ◽  
pp. 275-278
Author(s):  
Xiang Yang Ma ◽  
Yan Feng ◽  
Yu Heng Zeng ◽  
De Ren Yang
Keyword(s):  
High Temperature ◽  
Low Temperature ◽  
Czochralski Silicon ◽  
Silicon Crystals ◽  
Oxygen Precipitation ◽  
High Temperature Anneal ◽  
Oxygen Precipitates ◽  
Co Doped ◽  
Oswald Ripening

Oxygen precipitation (OP) behaviors in conventional and nitrogen co-doped heavily arsenic-doped Czocharalski silicon crystals subjected to low-high two-step anneals of 650 oC/8 h + 1000 oC/4-256 h have been comparatively investigated. Due to the nitrogen enhanced nucleation of OP during the low temperature anneal, much higher density of oxygen precipitates generated in the nitrogen co-doped specimens. With the extension of high temperature anneal, Oswald ripening of OP in the nitrogen co-doped specimens preceded that in the conventional ones. Moreover, due to the Oswald ripening effect, the oxygen precipitates in the conventional specimens became larger with a wider range of sizes. While, the sizes of oxygen precipitates in the nitrogen co-doped specimens distributed in a much narrower range with respect to the conventional ones.

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

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.

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