@article{WANG2022, 
author = {Xinjian WANG and Yu HUAN and Yixuan ZHU and Peng ZHANG and Wenlong YANG and Peng LI and Tao WEI and Longtu LI and Xiaohui WANG},
title = {Defect engineering of BCZT-based piezoelectric ceramics with high piezoelectric properties},
year = {2022},
journal = {Journal of Advanced Ceramics},
volume = {11},
number = {1},
pages = {184-195},
keywords = {BCZT ceramics, Mn-doping, different sintering atmosphere, p/n-type conduction mechanism, defect engineering},
url = {https://www.sciopen.com/article/10.1007/s40145-021-0526-6},
doi = {10.1007/s40145-021-0526-6},
abstract = {The intrinsic conduction mechanism and optimal sintering atmosphere of (Ba0.85Ca0.15)(Zr0.1Ti0.9)O3 (BCZT) ceramics were regulated by Mn-doping element in this work. By Hall and impedance analysis, the undoped BCZT ceramics exhibit a typical n-type conduction mechanism, and the electron concentration decreases with the increasing oxygen partial pressure. Therefore, the undoped ceramics exhibit best electrical properties (piezoelectrical constant d33 = 585 pC·N-1, electro-mechanical coupling factor kp = 56%) in O2. A handful of Mn-doping element would transfer the conduction mechanism from n-type into p-type. And the hole concentration reduces with the decreasing oxygen partial pressure for Mn-doped BCZT ceramics. Therefore, the Mn-doped ceramics sintered in N2 have the highest insulation resistance and best piezoelectric properties (d33 = 505 pC·N-1, kp = 50%). The experimental results demonstrate that the Mn-doping element can effectively adjust the intrinsic conduction mechanism and then predict the optimal atmosphere.}
}