Large Piezoelectricity in NaNbO3-based Lead-free Ceramics via Tuning Oxygen Octahedral Tilt

2022 ◽  
Author(s):  
Lu Wang ◽  
He Qi ◽  
Botao Gao ◽  
Ye Liu ◽  
Hui Liu ◽  
...  
Keyword(s):  
Local Structure ◽  
High Performance ◽  
Room Temperature ◽  
Lead Free ◽  
Lead Free Ceramics

The development of high-performance lead-free piezoceramics for replacing Pb-based perovskites has attracted lots of attention, and comparable room-temperature piezoresponse has been realized in (Na,K)NbO3 and BaTiO3-based ceramics with local structure...

Enhanced electrocaloric strengths at room temperature in (SrxBa1−x)(Sn0.05Ti0.95)O3 lead-free ceramics

2021 ◽  
Vol 871 ◽  
pp. 159519
Author(s):  
Sheng-Guo Lu ◽  
Xiongwei Lin ◽  
Jiang Li ◽  
Dandan Li ◽  
Yingbang Yao ◽  
...  
Keyword(s):  
Room Temperature ◽  
Lead Free ◽  
Lead Free Ceramics

Realizing ultrahigh recoverable energy density and superior charge–discharge performance in NaNbO3-based lead-free ceramics via a local random field strategy

2020 ◽  
Vol 8 (11) ◽  
pp. 3784-3794 ◽  
Author(s):  
Junpeng Shi ◽  
Xiuli Chen ◽  
Xu Li ◽  
Jie Sun ◽  
Congcong Sun ◽  
...  
Keyword(s):  
Energy Storage ◽  
Energy Density ◽  
Random Field ◽  
High Performance ◽  
Environmentally Friendly ◽  
Lead Free ◽  
Discharge Performance ◽  
Lead Free Ceramics ◽  
Recoverable Energy ◽  
Charge Discharge

The development and use of high-performance and environmentally friendly energy storage capacitors are urgently demanded.

Dielectric, Piezoelectric and Ferroelectric Properties of (1-x)K0.5Na0.5NbO3–xBiGaO3 Lead-Free Ceramics

2013 ◽  
Vol 634-638 ◽  
pp. 2345-2348 ◽  
Author(s):  
Hong Mei Zhang ◽  
Shao Bo Qu ◽  
Jing Bo Zhao ◽  
Hong Liang Du
Keyword(s):  
Solid State ◽  
Electrical Properties ◽  
Piezoelectric Ceramic ◽  
Room Temperature ◽  
Piezoelectric Properties ◽  
Ferroelectric Properties ◽  
Lead Free ◽  
Practical Applications ◽  
Lead Free Ceramics ◽  
Solid State Sintering

(1-X)K0.5Na0.5NbO3–xBiGaO3[(1-X)KNN-Xbg] Lead-Free Ceramics with Different Additive of Bigao3 Were Synthesized by Conventional Solid-State Sintering Technique. Dielectric, Piezoelectric and Ferroelectric Properties of (1-X)KNN-Xbg Lead-Free Ceramics Were Studied. it Is Found that the Piezoelectric Properties Was Improved due to the Additive Bigao3，The Ceramics X=0.01 near Room Temperature Exhibit Excellent Electrical Properties D33=152pC/N, TC=372 °C. these Results Indicate that Bigao3 Adjusted K0.5Na0.5NbO3-Based Ceramics Materials Are Promising Lead-Free Piezoelectric Ceramic Candidates for Practical Applications.

Electrocaloric effect in BNT-based lead-free ceramics by local-structure and phase-boundary evolution

2020 ◽  
Vol 817 ◽  
pp. 152794 ◽  
Author(s):  
Guohui Li ◽  
Jiahao Li ◽  
Feng Li ◽  
Yuanbo Li ◽  
Xing Liu ◽  
...  
Keyword(s):  
Phase Boundary ◽  
Local Structure ◽  
Lead Free ◽  
Electrocaloric Effect ◽  
Lead Free Ceramics

scholarly journals Structure, dielectric, and piezoelectric properties of K0.5Na0.5NbO3-based lead-free ceramics

RSC Advances ◽  
2018 ◽  
Vol 8 (43) ◽  
pp. 24286-24296 ◽  
Author(s):  
Sushmita Dwivedi ◽  
Tanvi Pareek ◽  
Sunil Kumar
Keyword(s):  
Room Temperature ◽  
Piezoelectric Properties ◽  
Lead Free ◽  
X Ray Diffraction ◽  
X Ray ◽  
System P ◽  
Lead Free Ceramics ◽  
Diffraction Patterns ◽  
Dielectric And Piezoelectric Properties

Room temperature powder X-ray diffraction patterns of (1 – x)K0.5Na0.5NbO3–xBi(Zn0.5Ti0.5)O3 system.

High performance BiFe0.9Co0.1O3 doped KNN-based lead-free ceramics for acoustic energy harvesting

Nano Energy ◽  
2021 ◽  
Vol 84 ◽  
pp. 105900
Author(s):  
Jie Xing ◽  
Hao Chen ◽  
Laiming Jiang ◽  
Chunlin Zhao ◽  
Zhi Tan ◽  
...  
Keyword(s):  
Energy Harvesting ◽  
High Performance ◽  
Acoustic Energy ◽  
Lead Free ◽  
Lead Free Ceramics ◽  
Acoustic Energy Harvesting

Dielectric, Piezoelectric, Pyroelectric Properties and Polymorphic Phase Transition of 0.95 (KXNa1-X) NbO3-0.05LiSbO3 Lead-Free Ferroelectric Ceramics

2013 ◽  
Vol 377 ◽  
pp. 161-165
Author(s):  
Yang Yang Zhang ◽  
Jin Ping Zhang ◽  
Er Ping Wang ◽  
Sheng Lin Jiang ◽  
Lin Lu
Keyword(s):  
Phase Transition ◽  
Transition Temperature ◽  
Electrical Properties ◽  
Room Temperature ◽  
Lead Free ◽  
Ferroelectric Ceramics ◽  
Polymorphic Phase Transition ◽  
Lead Free Ceramics ◽  
Enhanced Properties ◽  
Tetragonal Phase Transition

0.95 (KXNa1-X) NbO3-0.05 LiSbO3(KNN-LS-X) (X=0.4-0.5) lead-free ceramics were prepared by conventional solid method. The effect of K/Na ratio on the dielectric, piezoelectric, pyroelectric and polymorphic phase transition was studied. The results show that the electrical properties strongly depend on the K/Na ratio. The KNN-LS-X(X=0.45) ceramics exhibit enhanced properties (εr=891.267,d33=222pC/N,Kp=0.43517,Qm=64.72,p=15×10-4C/m2K). Enhanced electrical properties of the KNN-LS-X (X=0.45) ceramics could be attributed to the effect of K/Na ratio modifying the polymorphic orthorhombic-tetragonal phase transition temperature to room temperature, which could make KNN-LS-X (X=0.45) ceramics use as a new ferroelectric sensor.

scholarly journals Dielectric Spectroscopy of the (K0.44Na0.52Li0.04)0.97La0.01Nb0.9Ta0.1O3 Ceramic Obtained by Sol-Gel

2020 ◽  
Author(s):  
R. López-Noda ◽  
J. Portelles ◽  
G. Rojas-George ◽  
A. Reyes-Rojas ◽  
J. Fuentes ◽  
...  
Keyword(s):  
Room Temperature ◽  
Ferroelectric Phase ◽  
Sol Gel ◽  
Rietveld Analysis ◽  
Lead Free ◽  
Solid State Method ◽  
Conduction Mechanisms ◽  
Lead Free Ceramics ◽  
State Method ◽  
Template Grain Growth

Abstract (K0.44Na0.52Li0.04)0.97La0.01Nb0.9Ta0.1O3 lead free ceramics were synthesized by sol-gel method. Their morphology, crystal structure and spectroscopic dielectric properties were analyzed by the appropriate techniques. The co-existence of an orthorhombic and a tetragonal ferroelectric phase at room temperature is confirmed by Rietveld analysis. La and Li cations are effective in shifting down the ferroelectric transition temperatures. The tetragonal to cubic transition, (TT-C), takes place at 371 °C while the orthorhombic to tetragonal, (TO-T), occurs at 110 °C, and the maximum relative permittivity (ɛmax) at TT-C is 3000, which is among the highest for KNN-based ceramics obtained by different methods. Conductivity behaves according to Jonscher’s law in the frequency and temperature range of this study. The activation energy values corresponding to the different conduction mechanisms were obtained. The results were compared with those for the same composition obtained by combining the reactive template grain growth (RTGG) technique and the solid-state method.

Room temperature antiferroelectric-phase stability in BNT-BT lead-free ceramics

2017 ◽  
Vol 525 ◽  
pp. 114-118 ◽  
Author(s):  
J.D.S. Guerra ◽  
A. Peláiz-Barranco ◽  
F. Calderón-Piñar ◽  
Y. Mendez-González
Keyword(s):  
Phase Stability ◽  
Room Temperature ◽  
Lead Free ◽  
Antiferroelectric Phase ◽  
Lead Free Ceramics
Sign in / Sign up

Export Citation Format

Share Document