Phase transition, microstructure and electric-field-induced large strain in Bi0.5(Na0.85K0.15)0.5TiO3-BiAlO3 lead-free piezoelectric ceramics

2010 ◽  
Vol 207 (11) ◽  
pp. 2578-2584 ◽  
Author(s):  
Aman Ullah ◽  
Chang Won Ahn ◽  
Ill Won Kim
Keyword(s):  
Phase Transition ◽  
Electric Field ◽  
Large Strain ◽  
Piezoelectric Ceramics ◽  
Lead Free

Electric-field-induced phase transition and large strain in lead-free Nb-doped BNKT-BST ceramics

2014 ◽  
Vol 34 (1) ◽  
pp. 29-35 ◽  
Author(s):  
Amir Ullah ◽  
Rizwan Ahmed Malik ◽  
Aman Ullah ◽  
Dae Su Lee ◽  
Soon Jong Jeong ◽  
...  
Keyword(s):  
Phase Transition ◽  
Electric Field ◽  
Large Strain ◽  
Lead Free ◽  
Bst Ceramics

scholarly journals High strain response and low hysteresis in BaZrO3-modified KNN-based lead-free relaxor ceramics

2021 ◽  
Author(s):  
Jian Zhang ◽  
Zixuan Liu ◽  
Tao Zhang ◽  
Yunfei Liu ◽  
Yinong Lyu
Keyword(s):  
Phase Transition ◽  
Electric Field ◽  
High Strain ◽  
Large Strain ◽  
Piezoelectric Actuators ◽  
Solid State Reaction Method ◽  
Lead Free ◽  
Practical Application ◽  
Practical Applications ◽  
T Phase

Abstract The high driving electric field and the large strain hysteresis was subject to a challenge for piezoelectric actuators’ practical applications. In order to obtain the piezoceramics with giant strain and low hysteresis at small electric field, a ternary solid solution (0.97- x )(K 0.48 Na 0.52 )Nb 0.965 Sb 0.035 -0.03Bi 0.5 (K 0.18 Na 0.82 ) 0.5 ZrO 3 - x BaZrO 3 ( x = 0-0.06) was designed and synthesized by the traditional solid-state reaction method. The relationships among phase transition, microstructure, and electrical properties of the ceramics samples were systemically investigated. Under a low electric field of 4 kV/mm, the ceramic with x = 0.02 obtained a high strain of 0.29 % ( S max / E max = 729 pm/V) and a low hysteresis of 13.8 %. The excellent piezoelectric properties are mainly attributed to rhombohedral-orthorhombic-tetragonal (R-O-T) phase boundary and the relaxor-to-ferroelectric phase transition. We believe that our research can not only provide the pathway of achieving KNN-based ceramics with high strain and low hysteresis but also promote the practical application of lead-free piezoelectric actuators.

Large strain and strain memory effect in bismuth ferrite lead-free ceramics

2017 ◽  
Vol 5 (37) ◽  
pp. 9528-9533 ◽  
Author(s):  
Jing Lv ◽  
Weiwei Gao ◽  
Junning Li ◽  
Tangyuan Li ◽  
Changbai Long ◽  
...  
Keyword(s):  
Electric Field ◽  
Memory Effect ◽  
Large Strain ◽  
Bismuth Ferrite ◽  
Ferroelectric Materials ◽  
Lead Free ◽  
Lead Free Ceramics ◽  
Electric Field Induced Strain

An electric-field-induced strain in ferroelectric materials has extensive applications in actuators and sensors.

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