scholarly journals Subterahertz dielectric relaxation in lead-free Ba(Zr,Ti)O3 relaxor ferroelectrics

2016 ◽  
Vol 7 (1) ◽  
Author(s):  
D. Wang ◽  
A. A. Bokov ◽  
Z.-G. Ye ◽  
J. Hlinka ◽  
L. Bellaiche
Keyword(s):  
Dielectric Relaxation ◽  
Relaxor Ferroelectrics ◽  
Lead Free

Dielectric Relaxation and Electrical Properties of Lead-Free LiNbO3-Substituted Na0.5K0.5NbO3Ferroelectric Ceramics

2010 ◽  
Vol 404 (1) ◽  
pp. 180-185 ◽  
Author(s):  
Jin Soo Kim ◽  
Chang Won Ahn ◽  
Ill Won Kim ◽  
Sang-Bock Cho ◽  
Chang Hee Chung ◽  
...  
Keyword(s):  
Electrical Properties ◽  
Dielectric Relaxation ◽  
Lead Free

scholarly journals Strategies to Improve the Energy Storage Properties of Perovskite Lead-Free Relaxor Ferroelectrics: A Review

Materials ◽  
2020 ◽  
Vol 13 (24) ◽  
pp. 5742
Author(s):  
Vignaswaran Veerapandiyan ◽  
Federica Benes ◽  
Theresa Gindel ◽  
Marco Deluca
Keyword(s):  
Energy Storage ◽  
Energy Density ◽  
Electrical Energy ◽  
High Energy ◽  
Relaxor Ferroelectrics ◽  
High Energy Density ◽  
Lead Free ◽  
Chemical Additives ◽  
Energy Storage Properties ◽  
Novel Processing

Electrical energy storage systems (EESSs) with high energy density and power density are essential for the effective miniaturization of future electronic devices. Among different EESSs available in the market, dielectric capacitors relying on swift electronic and ionic polarization-based mechanisms to store and deliver energy already demonstrate high power densities. However, different intrinsic and extrinsic contributions to energy dissipations prevent ceramic-based dielectric capacitors from reaching high recoverable energy density levels. Interestingly, relaxor ferroelectric-based dielectric capacitors, because of their low remnant polarization, show relatively high energy density and thus display great potential for applications requiring high energy density properties. In this study, some of the main strategies to improve the energy density properties of perovskite lead-free relaxor systems are reviewed, including (i) chemical modification at different crystallographic sites, (ii) chemical additives that do not target lattice sites, and (iii) novel processing approaches dedicated to bulk ceramics, thick and thin films, respectively. Recent advancements are summarized concerning the search for relaxor materials with superior energy density properties and the appropriate choice of both composition and processing routes to match various applications’ needs. Finally, future trends in computationally-aided materials design are presented.

scholarly journals Electric-field-induced local distortion and large electrostrictive effects in lead-free NBT-based relaxor ferroelectrics

2018 ◽  
Vol 38 (14) ◽  
pp. 4631-4639 ◽  
Author(s):  
Xing Liu ◽  
Saidong Xue ◽  
Jinpeng Ma ◽  
Jiwei Zhai ◽  
Bo Shen ◽  
...  
Keyword(s):  
Electric Field ◽  
Relaxor Ferroelectrics ◽  
Lead Free ◽  
Local Distortion

Lead-free Bi1/2(Na0.82K0.18)1/2TiO3 relaxor ferroelectrics with temperature insensitive electrostrictive coefficient

2013 ◽  
Vol 39 ◽  
pp. S119-S124 ◽  
Author(s):  
Vu Diem Ngoc Tran ◽  
Thi Hinh Dinh ◽  
Hyoung-Su Han ◽  
Wook Jo ◽  
Jae-Shin Lee
Keyword(s):  
Relaxor Ferroelectrics ◽  
Lead Free

Dielectric relaxation, lattice dynamics and polarization mechanisms in Bi0.5Na0.5TiO3-based lead-free ceramics

2013 ◽  
Vol 114 (1) ◽  
pp. 014107 ◽  
Author(s):  
Giuseppe Viola ◽  
Huanpo Ning ◽  
Xiaojong Wei ◽  
Marco Deluca ◽  
Arturas Adomkevicius ◽  
...  
Keyword(s):  
Dielectric Relaxation ◽  
Lattice Dynamics ◽  
Lead Free ◽  
Lead Free Ceramics

Lead-free relaxor ferroelectrics with ‘TTB’ structure

2002 ◽  
Vol 5 (3) ◽  
pp. 143-148 ◽  
Author(s):  
Jean Ravez ◽  
Annie Simon
Keyword(s):  
Relaxor Ferroelectrics ◽  
Lead Free
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