TY - JOUR
T1 - Microstructural design and properties of PMNT crystal-embedded barium calcium zirconate titanate ceramics
AU - Jaimeewong, Piyaporn
AU - Liu, Zenghui
AU - Wang, Xiaotong
AU - Jiansirisomboon, Sukanda
AU - Ye, Zuo Guang
AU - Watcharapasorn, Anucha
N1 - Publisher Copyright:
© 2017 Elsevier Ltd and Techna Group S.r.l.
PY - 2017/8
Y1 - 2017/8
N2 - In this study, BCZT-0.02Bi ceramics embedded with PMNT single crystals in the amount of 1, 3 and 5 wt% were prepared. The ceramics were sintered in the temperature range of 1100–1200 °C for 2 h. All the samples were characterized in terms of microstructure, and dielectric and ferroelectric properties. The microstructural characterization revealed good interfaces between PMNT single crystals and BCZT-0.02Bi grains. The addition of PMNT single crystals was found to increase the dielectric constant of the ceramics. The temperature dependences of dielectric permittivity and ferroelectric hysteresis loops also indicated an increase in relaxor behavior with increasing PMNT content. The important factors related to the relaxor behavior in this material system were discussed in detail. The BCZT-0.02Bi-xPMNT ceramic composites with exceptionally large dielectric constant with very low loss and linear P-E behavior may be used as a viable replacement for lead-based materials in electromechanical actuators and sensors and in frequency-tunable capacitors.
AB - In this study, BCZT-0.02Bi ceramics embedded with PMNT single crystals in the amount of 1, 3 and 5 wt% were prepared. The ceramics were sintered in the temperature range of 1100–1200 °C for 2 h. All the samples were characterized in terms of microstructure, and dielectric and ferroelectric properties. The microstructural characterization revealed good interfaces between PMNT single crystals and BCZT-0.02Bi grains. The addition of PMNT single crystals was found to increase the dielectric constant of the ceramics. The temperature dependences of dielectric permittivity and ferroelectric hysteresis loops also indicated an increase in relaxor behavior with increasing PMNT content. The important factors related to the relaxor behavior in this material system were discussed in detail. The BCZT-0.02Bi-xPMNT ceramic composites with exceptionally large dielectric constant with very low loss and linear P-E behavior may be used as a viable replacement for lead-based materials in electromechanical actuators and sensors and in frequency-tunable capacitors.
KW - BCZT
KW - Composites
KW - PMNT crystal
KW - Relaxor
UR - https://www.scopus.com/pages/publications/85020133666
U2 - 10.1016/j.ceramint.2017.05.294
DO - 10.1016/j.ceramint.2017.05.294
M3 - 文章
AN - SCOPUS:85020133666
SN - 0272-8842
VL - 43
SP - S193-S197
JO - Ceramics International
JF - Ceramics International
ER -