期刊
JOURNAL OF ALLOYS AND COMPOUNDS
卷 731, 期 -, 页码 631-635出版社
ELSEVIER SCIENCE SA
DOI: 10.1016/j.jallcom.2017.08.187
关键词
Ferroelectrics; Sodium bismuth titanate; Barium zinc niobate; Field-induced strain; Ergodic state
资金
- National Natural Science Foundation of China [51602012, 51677001]
- Natural Science Foundation of Beijing [4164078]
- Specialized Research Fund for the Doctoral Program of Higher Education of China [20131103110031]
- Jing-Hua Talents Project of Beijing University of Technology [2015-JH-L04]
A new lead-free binary solid solution (1-x)(Bi1/2Na1/2)TiO3-x -Ba(Zn1/3Nb2/3)O-3[(1-x) BNT-xBZN] was fabricated by a two-step solid oxide reaction route. The microstructure, electrical properties and fieldinduced strain as a function of the BZN content were investigated systematically. The results showed that, as BZN added, the solid solution undergone a transformation from rhombohedral to pseudocubic phases, and a morphotropic phase boundary occurred around x = 0.05. Meanwhile, the ergodic PNRs emerged at x = 0.05 and the completely ergodic state occurred for x >= 0.06. Especially, for the x = 0.055 sample, a large field-induced strain of 0.40% under an external electric field of 8 kV/mm was obtained due to the coexistence of nonergodic and ergodic states. (C) 2017 Elsevier B.V. All rights reserved.
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