Optical and electrical behavior of pristine and Mn doped 0.935(Bi 0.5Na 0.5TiO3 )-0.065 BaTiO3 lead free piezoelectric ceramics

2020 ◽  
Author(s):  
A. Paul Blessington Selvadurai ◽  
R. Suriakarthick ◽  
K. Aravinth ◽  
R. Murugaraj ◽  
C. Venkateswaran
Keyword(s):  
Piezoelectric Ceramics ◽  
Lead Free ◽  
Electrical Behavior ◽  
Mn Doped

Composition and poling condition-induced electrical behavior of (Ba0.85Ca0.15)(Ti1−xZrx)O3 lead-free piezoelectric ceramics

2012 ◽  
Vol 32 (4) ◽  
pp. 891-898 ◽  
Author(s):  
Jiagang Wu ◽  
Dingquan Xiao ◽  
Wenjuan Wu ◽  
Qiang Chen ◽  
Jianguo Zhu ◽  
...  
Keyword(s):  
Piezoelectric Ceramics ◽  
Lead Free ◽  
Electrical Behavior ◽  
Poling Condition

Effects of Sr and Mn-Doping on the Electrical Properties of CaBi4Ti4O15-Based Ceramics

2013 ◽  
Vol 575-576 ◽  
pp. 494-498 ◽  
Author(s):  
Bin Fu ◽  
Yang Lu Hou ◽  
Ting Li ◽  
Xing Hua Fu
Keyword(s):  
Dielectric Constant ◽  
Electrical Properties ◽  
Dielectric Loss ◽  
Perovskite Phase ◽  
Piezoelectric Ceramics ◽  
Lead Free ◽  
Piezoelectric Constant ◽  
Crystal Phase ◽  
Mn Doping ◽  
Mn Doped

Lead-free Sr-and Mn-doped Ca1-xSrxBi4Ti4O15, Ca1-yMnyBi4Ti4O15 bismuth layer piezoelectric ceramics have been prepared. The microstructure and electrical properties of the products were studied by XRD, SEM and Broadband LRC digital bridge. The obtained ceramics have Bi-layer perovskite phase. The dopings do not change the crystal phase of CaBi4Ti4O15. However, the doping amounts affect the size of crystal grain and porosity of the final products. The appropriate amounts of dopings for obtaining the highest dielectric constant and the lowest dielectric loss are determined. The prepared ceramics show the largest piezoelectric constant of 5.2~5.3 pC/N with the optimal Sr-and Mn-dopings.

Polymorphic phase transition-induced electrical behavior of BiCoO3-modified (K0.48Na0.52)NbO3 lead-free piezoelectric ceramics

2011 ◽  
Vol 509 (29) ◽  
pp. L284-L288 ◽  
Author(s):  
Wenjuan Wu ◽  
Dingquan Xiao ◽  
Jiagang Wu ◽  
Wenfeng Liang ◽  
Jing Li ◽  
...  
Keyword(s):  
Phase Transition ◽  
Piezoelectric Ceramics ◽  
Lead Free ◽  
Electrical Behavior ◽  
Polymorphic Phase Transition

Fabrication of Lead-Free Piezoelectric Ceramics by (Reactive) Templated Grain Growth

2010 ◽  
Vol 1 (3) ◽  
pp. 241-248 ◽  
Author(s):  
Wei Zhao ◽  
Jing Ya ◽  
Ying Xin ◽  
Zhifeng Liu ◽  
Lei E. ◽  
...  
Keyword(s):  
Grain Growth ◽  
Piezoelectric Ceramics ◽  
Lead Free ◽  
Templated Grain Growth

scholarly journals Impedance Spectroscopy of Lead-Free Ferroelectric Coatings

Coatings ◽  
2021 ◽  
Vol 11 (2) ◽  
pp. 221
Author(s):  
Mariya Aleksandrova ◽  
Ivailo Pandiev
Keyword(s):  
Composite Coatings ◽  
Electrical Circuit ◽  
Ferroelectric Materials ◽  
Piezoelectric Transducers ◽  
Lead Free ◽  
Electrical Behavior ◽  
Oxide Composite ◽  
Before And After ◽  
Frequency Dependences ◽  
Good Agreement

This paper presents impedance measurements of ferroelectric structures involving lead-free oxide and polymer-oxide composite coatings for sensing and energy harvesting applications. Three different ferroelectric materials grown by conventional microfabrication technologies on solid or flexible substrates are investigated for their basic resonant characteristics. Equivalent electrical circuit models are applied to all cases to explain the electrical behavior of the structures, according to the materials type and thickness. The analytical results show good agreement with the experiments carried out on a basic types of excited thin-film piezoelectric transducers. Additionally, temperature and frequency dependences of the dielectric permittivity and losses are measured for the polymer-oxide composite device in relation with the surface morphology before and after introduction of the polymer to the functional film.

Temperature dependent fracture toughness of KNN-based lead-free piezoelectric ceramics

2019 ◽  
Vol 174 ◽  
pp. 369-378 ◽  
Author(s):  
Yingwei Li ◽  
Yixuan Liu ◽  
Paul-Erich Öchsner ◽  
Daniel Isaia ◽  
Yichi Zhang ◽  
...  
Keyword(s):  
Fracture Toughness ◽  
Piezoelectric Ceramics ◽  
Lead Free ◽  
Temperature Dependent

The characteristics of ultrasonic therapeutic transducers and used lead-free non-stoichiometric NKN-based piezoelectric ceramics

2011 ◽  
Vol 11 (3) ◽  
pp. S128-S133 ◽  
Author(s):  
Cheng-Che Tsai ◽  
Shih-Fang Chen ◽  
Sheng-Yuan Chu ◽  
C.M. Cheng ◽  
M.C. Kuan
Keyword(s):  
Piezoelectric Ceramics ◽  
Lead Free
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