The improved pyroelectric properties, high depolarization temperature and excellent thermal stability in lead-free (1-x)(Bi0.5Na0.5)TiO3-xBa(Ni0.5Nb0.5)O-3 ceramics

doi:10.1088/2053-1591/aafcd0

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	The improved pyroelectric properties, high depolarization temperature and excellent thermal stability in lead-free (1-x)(Bi0.5Na0.5)TiO3-xBa(Ni0.5Nb0.5)O-3 ceramics
	Jia, Jiahui; Guo, Shaobo; Cao, Fei; Yan, Shiguang; Yao, Chunhua; Dong, Xianlin; Wang, Genshui
	2019-04-01
Source Publication	MATERIALS RESEARCH EXPRESS
ISSN	2053-1591
Volume	6 Issue:4
Subtype	Article
Abstract	(1-x)(Bi0.5Na0.5)TiO3-xBa(Ni0.5Nb0.5)O-3 (x = 0-0.04) lead-free ceramics (abbreviated as (1-x) BNT-xBNN) were synthesized by a conventional solid-state reaction method. The effect of BNN contents on phase structure, microstructure, ferroelectric, dielectric, pyroelectric properties and thermal stability of (1-x)BNT-xBNN ceramics were systematically investigated. The pyroelectric coefficient (p) at room temperature increased gradually from 3.01 x 10(-8) C cm(-2)K(-1) at x = 0 to 5.94 x 10(-8) C cm(-2) K-1 at x = 0.04. The dielectric loss (tan delta) and dielectric constant (epsilon(r)) decreased first with the small amount of BNN content, then increased slightly with further BNN addition, acquiring the minimum tan delta and epsilon(r) at x = 0.02. When x = 0.02, the optimal over-all properties were observed with pyroelectric figure of merit (FOMs) of F-v = 3.82 x 10(-2) m(2) C-1 and figure of merit of F-d = 2.74 x 10(-5) P a(-1/2). More importantly, the depolarization temperature (T-d) of 0.98BNT-0.02BNN ceramics is up to similar to 195 degrees C which is higher than most other reported BNT-based ferroelectric ceramics. In addition, it can be exposed to temperature up to similar to 145 degrees C with negligible deterioration of pyroelectric properties, showing excellent thermal stability. The overall properties reveal that 0.98BNT-0.02BNN ceramics is a promising pyroelectric material for infrared detectors.
Keyword	lead-free ceramics pyroelectric properties depolarization temperature thermal stability pyroelectric figure of merit (1-x)BNT-xBNN
DOI	10.1088/2053-1591/aafcd0
Language	英语
WOS Research Area	Materials Science
Publisher	IOP PUBLISHING LTD
Citation statistics
Document Type	期刊论文
Identifier	http://ir.sic.ac.cn/handle/331005/27246
Collection	中国科学院上海硅酸盐研究所
Recommended Citation GB/T 7714	Jia, Jiahui,Guo, Shaobo,Cao, Fei,et al. The improved pyroelectric properties, high depolarization temperature and excellent thermal stability in lead-free (1-x)(Bi0.5Na0.5)TiO3-xBa(Ni0.5Nb0.5)O-3 ceramics[J]. MATERIALS RESEARCH EXPRESS,2019,6(4).
APA	Jia, Jiahui.,Guo, Shaobo.,Cao, Fei.,Yan, Shiguang.,Yao, Chunhua.,...&Wang, Genshui.(2019).The improved pyroelectric properties, high depolarization temperature and excellent thermal stability in lead-free (1-x)(Bi0.5Na0.5)TiO3-xBa(Ni0.5Nb0.5)O-3 ceramics.MATERIALS RESEARCH EXPRESS,6(4).
MLA	Jia, Jiahui,et al."The improved pyroelectric properties, high depolarization temperature and excellent thermal stability in lead-free (1-x)(Bi0.5Na0.5)TiO3-xBa(Ni0.5Nb0.5)O-3 ceramics".MATERIALS RESEARCH EXPRESS 6.4(2019).

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