Depolarization field effect on dielectric and piezoelectric properties of particulate ferroelectric ceramic-polymer composites

2015 ◽  
Vol 117 (12) ◽  
pp. 124101 ◽  
Author(s):  
Fengde D. Ma ◽  
Yu U. Wang
Keyword(s):  
Polymer Composites ◽  
Field Effect ◽  
Piezoelectric Properties ◽  
Ferroelectric Ceramic ◽  
Dielectric And Piezoelectric Properties

Dielectric and piezoelectric properties of ceramic-polymer composites with 0–3 connectivity type

2012 ◽  
Vol 30 (1-2) ◽  
pp. 30-35 ◽  
Author(s):  
Young Jun Choi ◽  
Myong-Jae Yoo ◽  
Hyung-Won Kang ◽  
Hyeung-Gyu Lee ◽  
Seung Ho Han ◽  
...  
Keyword(s):  
Polymer Composites ◽  
Piezoelectric Properties ◽  
Dielectric And Piezoelectric Properties

Evaluating the polymorphic phase transition in calcium-doped Ba(Zr0.05Ti0.95)O3: a lead-free piezoelectric ceramic

2013 ◽  
Vol 46 (2) ◽  
pp. 324-331 ◽  
Author(s):  
Gurvinderjit Singh ◽  
V. S. Tiwari ◽  
P. K. Gupta
Keyword(s):  
Room Temperature ◽  
Composition Range ◽  
Piezoelectric Properties ◽  
Ferroelectric Ceramic ◽  
Lead Free ◽  
Dielectric Measurements ◽  
Polymorphic Phase Transition ◽  
Tetragonal Crystal ◽  
Tetragonal Crystal Structure ◽  
Dielectric And Piezoelectric Properties

Structural and dielectric investigations were carried out on a perovskite lead-free (Ba1−xCax)(Zr0.05Ti0.95)O3ferroelectric ceramic forx= 0.03, 0.05, 0.08, 0.10, 0.12 and 0.15. The room-temperature structural analysis reveals a crossover from orthorhombic to tetragonal crystal structure nearx= 0.10. A coexistence of tetragonal (P4mm) and orthorhombic (Pmm2) structure is observed in the composition range 0.05 ≤x≤ 0.10. The fraction of tetragonal phase increases from 27% forx= 0.05 to 71% forx= 0.10. The dielectric measurements show that the tetragonal to orthorhombic and rhombohedral to orthorhombic transition temperatures decrease with an increase in Ca2+content, while the cubic to tetragonal transition temperature remains the same. It is also shown that for the tetragonal to orthorhombic transition a phase coexistence occurs over a temperature range of about 18 K. The coexistence range covers room temperature for intermediate compositions:x= 0.05, 0.08 and 0.10. Therefore, higher dielectric and piezoelectric properties are observed in these compositions.

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