NDLI: High energy density dielectrics in lead-free Bi$_{0.5}$Na$_{0.5}$TiO$_{3}$–NaNbO$_{3}$–Ba(Zr$_{0.2}$Ti$_{0.8}$)O$_{3}$ ternary system with wide operating temperature

Content Provider	Springer Nature Link
Author	Tang, Wenlin Xu, Qi Liu, Hanxing Yao, Zhonghua Hao, Hua Cao, Minghe
Copyright Year	2016
Abstract	The 0.6Bi$_{0.5}$Na$_{0.5}$TiO$_{3}$–(0.4 − x)NaNbO$_{3}$–xBa(Zr$_{0.2}$Ti$_{0.8}$)O$_{3}$ (BNT–NN–BZT) ceramics were developed for application as high energy density capacitor by conventional solid-state reaction method, and their structure, dielectric and ferroelectric properties were investigated in detail. When BZT was introduced into the system, the crystal structure changed from tetragonal to pseudocubic. Temperature dependent dielectric permittivity showed a broad maximum in these pseudocubic ceramics, exhibitting distinct relaxor feature. The relaxor behavior was evaluated by modified Curie–Weiss and confirmed to be enhanced with increasing BZT content. Benefited from the relaxor feature, its dielectric constant and dielectric temperature stability were largely improved. The remanent polarization (P$_{r}$) and coercive electric field (E$_{c}$) decreased with high BZT content and the maximum polarization (P$_{m}$) improved as shown in ferroelectric hysteresis loops (P–E loops). The energy storage property was also improved with increasing BZT, the optimized energy storage property was obtained in x = 0.20 sample with W = 1.69 J/cm$^{3}$ at 17.5 kV/mm, which was superior to many other ferroelectric relaxors, indicating that BNT–NN–BZT ceramics were promising candidates for temperature stable energy storage applications.
Starting Page	6526
Ending Page	6534
Page Count	9
File Format	PDF
ISSN	09574522
Journal	Journal of Materials Science: Materials in Electronics
Volume Number	27
Issue Number	6
e-ISSN	1573482X
Language	English
Publisher	Springer US
Publisher Date	2016-03-11
Publisher Place	New York
Access Restriction	One Nation One Subscription (ONOS)
Subject Keyword	Optical and Electronic Materials Characterization and Evaluation of Materials
Content Type	Text
Resource Type	Article
Subject	Atomic and Molecular Physics, and Optics Biomaterials Biophysics Condensed Matter Physics Electronic, Optical and Magnetic Materials Bioengineering Electrical and Electronic Engineering Biomedical Engineering

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