Induced anisotropic behavior and enhanced electrical properties on hot-pressed strontium barium niobate ceramics

CORC > 上海硅酸盐研究所 > 中国科学院上海硅酸盐研究所 > 无机功能材料与器件重点实验室 > 期刊论文

	Induced anisotropic behavior and enhanced electrical properties on hot-pressed strontium barium niobate ceramics
	Chen, Hui 1,2; Guo, Shaobo 1; Yao, Chunhua 1; Dong, Xianlin 1; Mao, Chaoliang 1; Wang, Genshui 1
刊名	CERAMICS INTERNATIONAL
	2017-03-01
卷号	43 期号:4 页码:3610-3615
关键词	Hot-pressing Pyroelectric properties Strontium barium niobate Lead-free ceramics
英文摘要	Sr0.3Ba0.7Nb2O6 (SBN30) ferroelectric ceramics were fabricated by conventional sintering (CS) and by hot pressing sintering (HP) and their crystal structure, microstructure, dielectric, ferroelectric and pyroelectric properties were studied and compared. Preferred orientation of the HP ceramics was detected through X-ray diffraction. Dense microstructure virtually free of pores has been achieved in HP samples. Moreover, the HP samples manifested prominent anisotropy in electrical properties. Besides, the relative permittivity (er), saturated polarization (P-s,), pyroelectric coefficient (p) in the direction perpendicular to the pressing axis were much higher than those of the randomly oriented CS samples. The HP samples sintered under 200 MPa show excellent pyroelectric properties in the direction perpendicular to the pressing axis, with pyroelectric coefficient of 2.38x10(-8)C/cm(2)K and pyroelectric figure of merit of F-i=1.13 pm/V, F-v=1.89 m(2)/C and F-d=0.63 mu Pa-1/2 which roughly triple the values obtained in CS samples. These results indicate that hot-pressing is a viable option for accessing single-crystal-like anisotropy as well as enhanced electrical properties in polycrystalline ceramics, thus unveiling the distinctive potential of HP SBN30 ceramics for infrared detector applications.
WOS标题词	Science & Technology ; Technology
类目[WOS]	Materials Science, Ceramics
研究领域[WOS]	Materials Science
关键词[WOS]	PYROELECTRIC PROPERTIES ; SR1-XBAXNB2O6 ; SBN
收录类别	SCI
语种	英语
WOS记录号	WOS:000393937900019
内容类型	期刊论文
源URL	[http://ir.sic.ac.cn/handle/331005/23556]
专题	上海硅酸盐研究所_无机功能材料与器件重点实验室_期刊论文
作者单位	1.Chinese Acad Sci, Shanghai Inst Ceram, Key Lab Inorgan Funct Mat & Devices, 1295 Dingxi Rd, Shanghai 200050, Peoples R China 2.Univ Chinese Acad Sci, Beijing 100049, Peoples R China
推荐引用方式 GB/T 7714	Chen, Hui,Guo, Shaobo,Yao, Chunhua,et al. Induced anisotropic behavior and enhanced electrical properties on hot-pressed strontium barium niobate ceramics[J]. CERAMICS INTERNATIONAL,2017,43(4):3610-3615.
APA	Chen, Hui,Guo, Shaobo,Yao, Chunhua,Dong, Xianlin,Mao, Chaoliang,&Wang, Genshui.(2017).Induced anisotropic behavior and enhanced electrical properties on hot-pressed strontium barium niobate ceramics.CERAMICS INTERNATIONAL,43(4),3610-3615.
MLA	Chen, Hui,et al."Induced anisotropic behavior and enhanced electrical properties on hot-pressed strontium barium niobate ceramics".CERAMICS INTERNATIONAL 43.4(2017):3610-3615.