Large linear electrostrain of acceptor-donor Co-doped ZnO films
Large linear electrostrain of acceptor-donor Co-doped ZnO films
复制标题
受主-施主共掺杂 ZnO 薄膜的大线性电应变
DOI：
10.1016/j.jmst.2021.08.068
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发表时间：
2021
影响因子：
10.9
通讯作者：
Fei Wei-Dong
中科院分区：
文献类型：
--
作者：
Gao Chang;Zhao Yu;Li Weili;Qiao Yulong;Wang Zhao;Jing Lu;Sheng Jie;Fei Wei-Dong
In this paper we present the effective strategy of Fe3+and Li+co-doping to enhance the electrostrain of ZnO thin films. Zn0.88(Fe0.06Li0.06)O thin film exhibits an excellentd33* value of 415 pm/V and large linear electrostrain of 0.68% after thermal-electric treatment. Both the X-ray diffraction and first principle calculation results have indicated that the Fe3+and Li+ions are inclined to adopt a preferential alignment along the edges approximately parallel to [001] direction in the zinc-oxygen tetrahedron and constitute a defect dipole (ionic pairs). It is considered that the local lattice distortion and the electric field-triggered polarization extension and rotation generated by preferential distributed Fe3+-Li+ionic pairs are responsible for the outstanding piezoelectric properties and large linear electrostrain.
