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河北工业大学
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Scaling behavior for (Bi0.5Na0.5)TiO3 based lead-free relaxor ferroelectric ceramics.

Title: Scaling behavior for (Bi0.5Na0.5)TiO3 based lead-free relaxor ferroelectric ceramics.
Authors: Ping Peng1,2
Hengchang Nie1
Zhen Liu1
Genshui Wang1
Xianlin Dong1 xldong@mail.sic.ac.cn
Yuanyuan Zhang3
Chungang Duan3
Xiaodong Tang3
Source: Journal of Applied Physics. 2017, Vol. 122 Issue 6, p064102-1-064102-6. 6p. 1 Chart, 5 Graphs.
Document Type: Article
Subject Terms: FERROELECTRIC ceramic materials
TITANATES
HYSTERESIS
HYSTERESIS loop
ELECTRIC fields
POLARIZATION (Nuclear physics)
Abstract: The dynamic hysteresis and scaling behavior of unpoled 0.96(Bi0.5Na0.5)TiO3-0.04BiAlO3 lead-free relaxor ceramics were investigated through the evolution of the hysteresis loops at a wide frequency (f) and electric-field amplitude (Eo) range. The variation of the hysteresis area (A) and remanent polarization Pr clearly suggested three stages of polarization reversal with increasing external electric fields. It was found that the dynamic hysteresis area in the low-Eo and high-Eo regions followed the power law relationships: (A) α f –0:14Eo3:30 (Eo ≤ 5.0 kV/mm) and (A) α f 0:064Eo–0:6Eo1:65 (Eo ≥ 6.2 kV/mm), respectively. Those power-law functions did not fit in the second stage (5.0 kV/mm < Eo < 6.2 kV/mm), where different numbers of polar nanoregions or nanodomains can be activated and transformed into macrodomains. The polarization mechanisms of above mentioned three stages were ascribed to the domain wall motion, then the formation of microdomains within the disordered nanodomains or polar nanoregions, followed by the induced macrodomains aligning parallel to the applied electric field. [ABSTRACT FROM AUTHOR]
(Copyright applies to all Abstracts.)
Author Affiliations: 1Key Laboratory of Inorganic Functional Materials and Devices, Shanghai Institute of Ceramics, Chinese Academy of Sciences, 1295 Dingxi Road, Shanghai 200050, People’s Republic of China. ; 2University of Chinese Academy of Sciences, Beijing 100049, People’s Republic of China. ; 3Key Laboratory of Polar Materials and Devices, Ministry of Education, Department of Electronic Engineering, East China Normal University, Shanghai 200241, China.
ISSN: 0021-8979 (Sherpa/RoMEO, JCR)
PageCount: 064102-1-64108
volume: 122
issue: 6
issn: 00218979
pubdate: 2017
DOI: https://doi.org/10.1063/1.4997448
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