TY - JOUR
T1 - Ultrahigh electrostrictive coefficient and hysteresis-free electrostrictive strain in textured BCZT ceramic
AU - Zhang, Leiyang
AU - Yang, Yang
AU - Hou, Hongping
AU - Zhang, Amei
AU - Miao, Zhuang
AU - Liu, Jia
AU - Wang, Xin
AU - Hou, Yudong
AU - Du, Hongliang
AU - Jin, Li
N1 - Publisher Copyright:
© 2023 Elsevier Ltd and Techna Group S.r.l.
PY - 2023/12/15
Y1 - 2023/12/15
N2 - Precision-controlled systems necessitate electronic actuators with large displacement, high precision, and miniaturization. Therefore, advanced ferroelectric functional ceramic materials must exhibit substantial displacement responsiveness, minimal hysteresis, and performance stability. Modifying electrostrictive ceramics to enhance the electrostrictive coefficient (Q33) through conventional doping strategies has proven challenging. To address this, grain-oriented textured ceramics harness crystalline anisotropy to elevate Q33 and electrostrictive strain response. In this work, we employ the template grain growth (TGG) method integrating preprepared BaTiO3 (BT) microtemplates, to cultivate <001>-oriented 0.5Ba(Zr0.2Ti0.8)O3-0.5(Ba0.7Ca0.3)TiO3 (BCZT) ceramics. Remarkably, the <001>-oriented BCZT ceramic manifests a substantial Q33 value of 0.066 m4/C2, marking a 65 % increase compared to randomly oriented ceramics. Under 100 kV/cm, ultra-high electrostrictive strain response (0.23%) and minimal hysteresis (1−8%) were achieved. Crucially, this elevated Q33 remains thermally stable within the range of 20−100 °C. This advancement not only enables the production of electrostrictive ceramics with improved Q33 and hysteresis-free strain but also broadens the application horizon of BCZT-based electrostrictive ceramics within high-precision actuator technologies.
AB - Precision-controlled systems necessitate electronic actuators with large displacement, high precision, and miniaturization. Therefore, advanced ferroelectric functional ceramic materials must exhibit substantial displacement responsiveness, minimal hysteresis, and performance stability. Modifying electrostrictive ceramics to enhance the electrostrictive coefficient (Q33) through conventional doping strategies has proven challenging. To address this, grain-oriented textured ceramics harness crystalline anisotropy to elevate Q33 and electrostrictive strain response. In this work, we employ the template grain growth (TGG) method integrating preprepared BaTiO3 (BT) microtemplates, to cultivate <001>-oriented 0.5Ba(Zr0.2Ti0.8)O3-0.5(Ba0.7Ca0.3)TiO3 (BCZT) ceramics. Remarkably, the <001>-oriented BCZT ceramic manifests a substantial Q33 value of 0.066 m4/C2, marking a 65 % increase compared to randomly oriented ceramics. Under 100 kV/cm, ultra-high electrostrictive strain response (0.23%) and minimal hysteresis (1−8%) were achieved. Crucially, this elevated Q33 remains thermally stable within the range of 20−100 °C. This advancement not only enables the production of electrostrictive ceramics with improved Q33 and hysteresis-free strain but also broadens the application horizon of BCZT-based electrostrictive ceramics within high-precision actuator technologies.
KW - BT
KW - Electrostrictive coefficient
KW - Hysteresis-free strain
KW - Lead-free
KW - Textured ceramics
UR - https://www.scopus.com/pages/publications/85173259994
U2 - 10.1016/j.ceramint.2023.10.022
DO - 10.1016/j.ceramint.2023.10.022
M3 - 文章
AN - SCOPUS:85173259994
SN - 0272-8842
VL - 49
SP - 40457
EP - 40465
JO - Ceramics International
JF - Ceramics International
IS - 24
ER -