TY - JOUR
T1 - Large strain response in acceptor- and donor-doped Bi0.5Na 0.5TiO3-based lead-free ceramics
AU - Li, Jiaming
AU - Wang, Feifei
AU - Leung, Chung Ming
AU - Or, Siu Wing
AU - Tang, Yanxue
AU - Chen, Xinman
AU - Wang, Tao
AU - Qin, Xiaomei
AU - Shi, Wangzhou
N1 - Funding Information:
This study was supported by the Science and Technology Commission of Shanghai Municipality (Grant No. 10ZR1422300 and 09520501000), Innovation Program of Shanghai Municipal Education Commission (09YZ151, 11YZ82, 11YZ83, and 11ZZ117), Shanghai Normal University Program (SK201026, PL929 and SK200708), National Natural Science Foundation of China (Grant No. 60807036), and Condensed Physics of Shanghai Normal University (Grant No. DZL712).
PY - 2011/9
Y1 - 2011/9
N2 - Effects of Fe and La addition on the dielectric, ferroelectric, and piezoelectric properties of Bi0.5Na0.5TiO 3-Bi0.5Li0.5TiO3-BaTiO 3-Mn ceramics were investigated. Similar to the doping effect in lead-based piezoelectric materials, here the Fe-doped ceramic created a hard effect with an improved mechanical quality factor (Q m) ~ 160, coercive field (E c) ~ 2.9 kV/mm, decreased dielectric constant (ε33{T/ε0)∼ 803, and loss (tanδ) ~ 0.024 while the La-doped one indicated a soft feature with improved piezoelectric constant (d 33) ~ 184 pC/N, ε33T/ε0 ∼ 983, tanδ ~ 0.033, and decreased E c ~ 2.46 kV/mm. In addition, the temperature dependence of the ferroelectric hysteresis loops and strain response under unipolar electric field was also studied. Around the depolarization temperature T d, large strain value was obtained with the normalized d 33* up to ~1,000 pC/N, which was suggested originated from the development of the short-range order or non-polar phases in the ferroelectric matrix. All these would provide a new way to realize high piezoelectric response for practical application in different temperature scale.
AB - Effects of Fe and La addition on the dielectric, ferroelectric, and piezoelectric properties of Bi0.5Na0.5TiO 3-Bi0.5Li0.5TiO3-BaTiO 3-Mn ceramics were investigated. Similar to the doping effect in lead-based piezoelectric materials, here the Fe-doped ceramic created a hard effect with an improved mechanical quality factor (Q m) ~ 160, coercive field (E c) ~ 2.9 kV/mm, decreased dielectric constant (ε33{T/ε0)∼ 803, and loss (tanδ) ~ 0.024 while the La-doped one indicated a soft feature with improved piezoelectric constant (d 33) ~ 184 pC/N, ε33T/ε0 ∼ 983, tanδ ~ 0.033, and decreased E c ~ 2.46 kV/mm. In addition, the temperature dependence of the ferroelectric hysteresis loops and strain response under unipolar electric field was also studied. Around the depolarization temperature T d, large strain value was obtained with the normalized d 33* up to ~1,000 pC/N, which was suggested originated from the development of the short-range order or non-polar phases in the ferroelectric matrix. All these would provide a new way to realize high piezoelectric response for practical application in different temperature scale.
UR - https://www.scopus.com/pages/publications/85027931562
U2 - 10.1007/s10853-011-5523-7
DO - 10.1007/s10853-011-5523-7
M3 - Journal article
AN - SCOPUS:85027931562
SN - 0022-2461
VL - 46
SP - 5702
EP - 5708
JO - Journal of Materials Science
JF - Journal of Materials Science
IS - 17
ER -