Effect of sintering temperature on the microstructural, dielectric, ferroelectric and piezoelectric properties of (Na0.5K0.5)NbO3 ceramics prepared from nanoscale powders

2016 ◽  
Vol 42 (12) ◽  
pp. 14135-14140 ◽  
Author(s):  
Chongtham Jiten ◽  
Roopam Gaur ◽  
Radhapiyari Laishram ◽  
K. Chandramani Singh
Keyword(s):  
Piezoelectric Properties ◽  
Sintering Temperature ◽  
Ferroelectric And Piezoelectric Properties

scholarly journals PLZT Microfibers Technology Optimization

2016 ◽  
Vol 61 (3) ◽  
pp. 1471-1476
Author(s):  
L. Kozielski ◽  
M. Adamczyk ◽  
K. Feliksik ◽  
D. Bochenek ◽  
F. Clemens
Keyword(s):  
Spontaneous Polarization ◽  
Laser Excitation ◽  
Piezoelectric Properties ◽  
Sintering Temperature ◽  
Waste Heat ◽  
Pyroelectric Coefficient ◽  
Ferroelectric Materials ◽  
Quick Response ◽  
New Generation ◽  
Ferroelectric And Piezoelectric Properties

Abstract Electrocaloric (EC) structures for a new generation of cooling or heating elements utilize the temperature dependence of spontaneous polarization in some ferroelectric materials to convert waste heat into electricity and vice versa. A (Pb0.93La0.07) (Zr0.65Ti0.35)O3 material, have the largest recorded pyroelectric coefficient. An effective predicted form for such applications is fiber, due to small heat capacitance and quick response time, even for nano second laser excitation. Consequently, the presented work provides a description of the optimization of structural, ferroelectric and piezoelectric properties of obtained fibers, finally concluding on necessity of sintering temperature reduction in 100°C in contrast to bulk form to effectively prevent its destruction.

Sintering Temperature Effect on Ferroelectric and Piezoelectric Properties of Lead-Free Piezoelectric (K0.5Na0.5)NbO3 Ceramics

2011 ◽  
Vol 239-242 ◽  
pp. 994-997 ◽  
Author(s):  
Chien Min Cheng ◽  
Ming Chang Kuan ◽  
Kai Huang Chen ◽  
Chia Chi Shih ◽  
Jiann Sheng Jiang
Keyword(s):  
Solid State ◽  
Bulk Density ◽  
Ceramic Sample ◽  
Electromechanical Coupling ◽  
Piezoelectric Properties ◽  
Sintering Temperature ◽  
Lead Free ◽  
Nominal Composition ◽  
Solid State Sintering ◽  
Ferroelectric And Piezoelectric Properties

Lead-free potassium sodium niobate ceramic, with the nominal composition of K0.5Na0.5NbO3, were synthesized by conventional solid state sintering, and its dielectric, ferroelectric, and piezoelectric properties were characterized as a function of sintering temperature. The orthorhombic to tetragonal phase transition (TO-T) temperature of K0.5Na0.5NbO3ceramic sample was about 220°C, and its Curie temperature was about 420°C. The high bulk density was obtained for all compositions by solid state sintering in air. Bulk density was increased with temperature and it reached to 4.4 g/cm3. The K0.5Na0.5NbO3ceramic sample sintered at 1100°C was optimized densification properties. In addition, the ferroelectric loop and dielectric characteristics dependence of different sintering temperature for K0.5Na0.5NbO3ceramic sample was obtained. Finally, we found that the piezoelectric constant (d33) was 160 pC/N, high remanent polarization (Pr) was 33mC/cm2, and high electromechanical coupling coefficients (kP) was about of 45%.

Influence of Sintering Temperature on Electrical Properties of Modified-PZT Piezoelectric Ceramics

2016 ◽  
Vol 872 ◽  
pp. 97-102
Author(s):  
Pharatree Jaita ◽  
Ratabongkot Sanjoom ◽  
Chatchai Kruea-In ◽  
Tawee Tunkasiri ◽  
Gobwute Rujijanagul
Keyword(s):  
Electrical Properties ◽  
Piezoelectric Properties ◽  
Sintering Temperature ◽  
Secondary Phases ◽  
Xrd Pattern ◽  
Mechanical And Electrical Properties ◽  
Low Field ◽  
Higher Temperature ◽  
Dominant Phase ◽  
Ferroelectric And Piezoelectric Properties

In this research, the effects of sintering temperature on phase structure, densification, microstructure, mechanical and electrical properties of modified-PZT ceramics were investigated. All ceramics were prepared by a conventional mixed oxide amend sintered at various temperatures from 1150 - 1250°C. XRD pattern indicated that completely solid solution occurred for all samples and the ceramics exhibited a single perovskite without any secondary phases. At lower sintering temperature, the dominant phase was rhombohedral while tetragonal phase became dominant at higher temperature. Grain size tended to increase with increasing sintering temperature. The dielectric, ferroelectric and piezoelectric properties were also increased with increasing sintering temperature. In addition, the highest low field d33 of 620 pC/N of was observed for the 1250°C sample.

Effect of Sintering Temperature on Structure, Piezoelectric and Ferroelectric Properties of (Na0.5Bi0.5)0.90Ba0.10TiO3 Ceramic

2006 ◽  
Vol 317-318 ◽  
pp. 853-856 ◽  
Author(s):  
Qing Xu ◽  
X.L. Chen ◽  
S.J. Wu ◽  
Wen Chen ◽  
Hao Wang ◽  
...  
Keyword(s):  
Crystal Structure ◽  
Piezoelectric Properties ◽  
Sintering Temperature ◽  
Ferroelectric Properties ◽  
Sintering Behavior ◽  
Poling Process ◽  
Different Temperatures ◽  
Ferroelectric And Piezoelectric Properties ◽  
Slight Deformation

Structures, ferroelectric and piezoelectric properties of (Na0.5Bi0.5)0.90Ba0.10TiO3 ceramic sintered at different temperatures were investigated. The results confirm an important role of sintering temperature on the structure and electrical properties of the ceramic. It was found that the increase of sintering temperature in the range of 1110-1160 promoted the development of crystal structure and microstructural densification, leading to an improvement in ferroelectric properties, poling process and piezoelectric properties. Further increase of the sintering temperature above 1160 resulted in a slight deformation of ceramic specimens. With respect to sintering behavior and piezoelectric properties, a relatively narrow sintering temperature range near 1150 was ascertained to be preferred for the ceramic.

Influence of sintering temperature on piezoelectric properties of (K0.5Na0.5)NbO3–LiNbO3 lead-free piezoelectric ceramics

2007 ◽  
Vol 42 (9) ◽  
pp. 1594-1601 ◽  
Author(s):  
Hongliang Du ◽  
Fusheng Tang ◽  
Fa Luo ◽  
Dongmei Zhu ◽  
Shaobo Qu ◽  
...  
Keyword(s):  
Piezoelectric Properties ◽  
Sintering Temperature ◽  
Piezoelectric Ceramics ◽  
Lead Free
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