Effect of heat-treatment mechanism on structural and electromechanical properties of eco-friendly (Bi, Ba)(Fe, Ti)O3 piezoceramics

被引：23

作者：

Akram, Fazli ^{[1
,2
,3
]}

Habib, Muhammad ^{[1
]}

Bae, Jihee ^{[1
]}

Khan, Salman Ali ^{[1
]}

Choi, Soo Yong ^{[1
]}

Ahmed, Tauseef ^{[1
]}

Baek, SeungBong ^{[1
]}

Din, Syed Taj Ud ^{[4
]}

Lim, Dong-Hwan ^{[5
]}

Jeong, Soon-Jong ^{[5
]}

Sung, Yeon Soo ^{[6
]}

Song, Tae Kwon ^{[1
]}

Kim, Myong-Ho ^{[1
]}

Lee, Soonil ^{[1
]}

机构：

[1] Changwon Natl Univ, Sch Mat Sci & Engn, Dept Mat Convergence & Syst Engn, Chang Won 51140, Gyeongnam, South Korea

[2] Univ Ulsan, Dept Phys, Ulsan 44610, South Korea

[3] Univ Ulsan, Energy Harvest Storage Res Ctr EHSRC, Ulsan 44610, South Korea

[4] Dongguk Univ, Dept Phys, Seoul 04620, South Korea

[5] Korea Electrotechnol Res Inst KERI, Energy Convers Res Ctr, Chang Won 51543, South Korea

[6] Pohang Univ Sci & Technol POSTECH, Dept Mat Sci & Engn, Pohang 37673, South Korea

来源：

JOURNAL OF MATERIALS SCIENCE | 2021年 / 56卷 / 23期

基金：

新加坡国家研究基金会;

关键词：

ENHANCED PIEZOELECTRIC PROPERTIES; LEAD-FREE PIEZOCERAMICS; GRAIN-SIZE; TEMPERATURE-DEPENDENCE; ELECTRICAL-PROPERTIES; DIELECTRIC-PROPERTIES; BARIUM-TITANATE; LEAKAGE CURRENT; CERAMICS; MN;

D O I：

10.1007/s10853-021-06138-z

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

Lead-free piezoelectric ceramics, (Bi0.70Ba0.35)(Fe0.65Ti0.35)O-3 (BBFT), were fabricated via a solid-state reaction method and then treated using different heat-treatment processes (furnace cooling, air quenching (AQ), and water quenching). In all these ceramics, the X-ray diffraction analysis revealed morphotropic phase boundaries between the rhombohedral and tetragonal phases. Changes in the average grain size, relative density, and electrical properties in the BBFT-AQ composition were observed. For the optimum BBFT-AQ ceramic, significantly enhanced dynamic (d(33)* similar to 340 pm/V) and static (d(33) similar to 165 pC/N) piezoelectric coefficients were obtained. Moreover, the d(33)* increased to 40% (d(33)* similar to 475 pm/V) with increasing temperature from 25 degrees C to 75 degrees C upon the application of a 4.0 kV/mm electric field. The related defect states were established by the variation in the transition of Fe3+ to Fe2+ and O-V or V-O(center dot center dot) concentration observed using X-ray photoelectron spectroscopy analysis. These factors are directly related to the electromechanical response enhancement in the BBFT piezoceramics. This study provides a paradigm for a deeper analysis of particular scientific heat-treatment mechanisms and the enhancement of functional properties in BBFT ceramics. [GRAPHICS] .

引用

页码：13198 / 13214

页数：17

共 74 条

[1] Less temperature-dependent high dielectric and energy-storage properties of eco-friendly BiFeO3-BaTiO3-based ceramics [J].