Pyroelectric response mechanism of barium strontium titanate ceramics in dielectric bolometer mode: The underlying essence of the enhancing effect of direct current bias field

2013 ◽  
Vol 102 (24) ◽  
pp. 242911 ◽  
Author(s):  
Chaoliang Mao ◽  
Sheng Cao ◽  
Shiguang Yan ◽  
Chunhua Yao ◽  
Fei Cao ◽  
...  
Keyword(s):  
Strontium Titanate ◽  
Barium Strontium Titanate ◽  
Direct Current ◽  
Bias Field ◽  
Response Mechanism ◽  
Enhancing Effect ◽  
Barium Strontium ◽  
Direct Current Bias ◽  
Titanate Ceramics ◽  
Pyroelectric Response

Direct and indirect measurement of large electrocaloric effect in barium strontium titanate ceramics

2019 ◽  
Vol 17 (3) ◽  
pp. 1354-1361 ◽  
Author(s):  
Guangzhou Dai ◽  
Shibin Wang ◽  
Guanhua Huang ◽  
Guirong Chen ◽  
Biao Lu ◽  
...  
Keyword(s):  
Strontium Titanate ◽  
Barium Strontium Titanate ◽  
Indirect Measurement ◽  
Electrocaloric Effect ◽  
Barium Strontium ◽  
Titanate Ceramics

Barium Strontium Titanate Ceramics Prepared by a Reaction-Sintering Process

2004 ◽  
Vol 848 ◽  
Author(s):  
Yi-Cheng Liou ◽  
Jen-Hsien Chen ◽  
Chi-Ting Wu
Keyword(s):  
Strontium Titanate ◽  
Barium Strontium Titanate ◽  
Sintering Temperature ◽  
Raw Materials ◽  
Reaction Sintering ◽  
Sintering Process ◽  
Barium Strontium ◽  
Bst Ceramics ◽  
Titanate Ceramics

ABSTRACTBarium strontium titanate (Ba0.7Sr0.3TiO3, BST) ceramics prepared by a reaction-sintering process were investigated. The mixture of raw materials of stoichiometric Ba0.7Sr0.3TiO3 was pressed and sintered into ceramics without any calcination stage involved. Perovskite BST ceramics were obtained after sintered at 1330–1370°C for 2–6 h. For 6 h soak time, a density value 5.68g/cm3 (99.8% of the theoretic value) was obtained at 1350°C sintering. Grains of sizes between 2μm and 15μm were formed after 1330–1370°C sintering for 2–6 h. A diffused ferroelectric-paraelectric transition was observed in pellets sintered at 1330°C for 2 h and disappeared at a longer soak time or a higher sintering temperature.

GIANT DIELECTRIC TUNABLE BEHAVIOR OF Pr-DOPED SrTiO3 AT LOW TEMPERATURE

2012 ◽  
Vol 05 (01) ◽  
pp. 1250018 ◽  
Author(s):  
T. WEI ◽  
Q. G. SONG ◽  
Q. J. ZHOU ◽  
Z. P. LI ◽  
Y. F. CHEN ◽  
...  
Keyword(s):  
Low Temperature ◽  
Strontium Titanate ◽  
Barium Strontium Titanate ◽  
Bias Field ◽  
Critical Threshold ◽  
Dielectric Tunability ◽  
Tunable Materials ◽  
Barium Strontium ◽  
Giant Dielectric ◽  
Polar State

Contrast with conventional dielectric tunable materials such as barium strontium titanate (BST), here, we report one new dielectric tunable behavior for Sr 1-x Pr x TiO 3 system at low temperature. Giant dielectric tunability is confirmed in this system. More importantly, the efficient dielectric tunability can be realized just using small bias field. In addition, critical threshold electric field is also confirmed. This phenomenon may be related with the competition interaction of polar state with quantum fluctuations.

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