Large linear electrostrain of acceptor-donor Co-doped ZnO films

Autor:	Chang Gao, Jie Sheng, Yulong Qiao, Weidong Fei, Yu Zhao, Weili Li, Zhao Wang, Lu Jing
Rok vydání:	2022
Předmět:	Preferential alignment Materials science Polymers and Plastics Condensed matter physics Mechanical Engineering Metals and Alloys Ionic bonding Piezoelectricity Acceptor Ion Dipole Mechanics of Materials Materials Chemistry Ceramics and Composites Thin film Polarization (electrochemistry)
Zdroj:	Journal of Materials Science & Technology. 109:12-19
ISSN:	1005-0302
Popis:	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 excellent d33* 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.
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_________::2a64ddaf4630ba854860ba52e0a7dcb2 https://doi.org/10.1016/j.jmst.2021.08.068 Zobrazit plný text záznamu Full Text from ScienceDirect