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Large electrostrain in low‐temperature sintered NBT‐BT‐0.025FN incipient piezoceramics
Author(s) -
Liu Kai,
Zhang Yangyang,
Marwat Mohsin A.,
Wang Ge,
Wang Dawei,
Ma Weigang,
Wei Tian,
li Mei,
Xu Jiwen,
Yang Huabin,
Kongparakul Suwadee,
Samart Chanatip,
Zang Jiadong,
Fan Pengyuan,
Zhang Haibo
Publication year - 2020
Publication title -
journal of the american ceramic society
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.9
H-Index - 196
eISSN - 1551-2916
pISSN - 0002-7820
DOI - 10.1111/jace.17058
Subject(s) - sintering , materials science , piezoelectricity , composite material , degradation (telecommunications) , phase (matter) , electrode , chemistry , electronic engineering , engineering , organic chemistry
It is well‐known that the high sintering temperatures of (Na 1/2 Bi 1/2 )TiO 3 (NBT)‐based incipient piezoceramics limit their applications on low‐cost multilayer piezoelectric actuators with base metal internal electrodes. In this work, a synergistic sintering additive of 0.75 wt% Li 2 CO 3 and 0.75 wt% CuO was utilized to explore the effect on sintering behavior and electrostrain of (Na 1/2 Bi 1/2 ) 0.935 Ba 0.065 Ti 0.975 (Fe 1/2 Nb 1/2 ) 0.025 O 3 (NBT‐BT‐0.025FN) incipient piezoceramic. The optimal sintering temperature of NBT‐BT‐0.025FN decreased from 1160°C to 940°C due to the formation of a liquid phase, with limited degradation on electrostrain. When sintered at 940°C, a large strain of 0.39% (a nominal piezocoefficient d 33 ∗ of 571 pm/V) was achieved, which is promising for potential actuator applications co‐firing with Ag electrodes.