Dielectric, ferroelectric and impedance properties of Li+-doped 0.97Na0.4K0.1Bi0.5TiO3–0.03Ba0.7Sr0.3TiO3 ceramics

doi:10.1007/s10854-018-9594-y

CORC > 兰州理工大学 > 兰州理工大学

	Dielectric, ferroelectric and impedance properties of Li+-doped 0.97Na0.4K0.1Bi0.5TiO3–0.03Ba0.7Sr0.3TiO3 ceramics
	Wang, Cheng 1,2; Lou, Xiaojie 3,4,5
刊名	Journal of Materials Science: Materials in Electronics
	2018-09-01
卷号	29 期号:17 页码:14589-14595
关键词	Ceramic materials Electric impedance Ferroelectricity Permittivity Perovskite Solid state reactions X ray powder diffraction Conductivity mechanisms Dielectric permittivities Ferroelectric property Ferroelectric-to-relaxor Impedance properties Pure perovskite phase Relaxor characteristics Solid-state reaction techniques
ISSN号	09574522
DOI	10.1007/s10854-018-9594-y
英文摘要	A series of Li+-doped 0.97Na0.4K0.1Bi0.5TiO3–0.03Ba0.7Sr0.3TiO3 ceramics were prepared by using the conventional solid-state reaction technique. The phase structure, dielectric, ferroelectric and impedance properties were systemically studied. X-ray powder diffraction patterns reveal that all the ceramics possess a pure perovskite phase. Ferroelectric property tests clearly show the disruption of the long-range ferroelectric order as the Li+ doping content increases. Dielectric permittivity results suggest that the samples experience a transformation from ferroelectric to relaxor phase with increasing the Li+ concentration, while the diffuse factors further confirm the enhanced relaxor characteristic. Complex ac impedance data shows that charge carriers obey the long-range conductivity mechanism at low doping levels (x ≤ 0.01), while it changes to a localized mechanism at high doping levels (x ≥ 0.03). The active energy fitted by the relaxation time becomes smaller as the Li+ concentration increases, revealing the increasing concentration of oxygen vacancies. We argue that the increasing concentration of vacancies should be responsible for the enhanced relaxor characteristic by disturbing the long-range ferroelectric orders. © 2018, Springer Science+Business Media, LLC, part of Springer Nature.
资助项目	Research Project of GSEDU[2018B-101]
WOS研究方向	Engineering ; Materials Science ; Physics
语种	英语
出版者	Springer New York LLC
WOS记录号	WOS:000441296500026
状态	已发表
内容类型	期刊论文
源URL	[http://ir.lut.edu.cn/handle/2XXMBERH/114850]
专题	兰州理工大学省部共建有色金属先进加工与再利用国家重点实验室
通讯作者	Wang, Cheng; Lou, Xiaojie
作者单位	1.Gansu Construct Vocat Tech Coll, 200 Yanjiaping Village, Lanzhou 730050, Gansu, Peoples R China 2.Lanzhou Univ Technol, State Key Lab Adv Proc & Recycling Nonferrous Met, Langongping Rd, Lanzhou 730050, Gansu, Peoples R China 3.Xi An Jiao Tong Univ, Frontier Inst Sci & Technol, Xian 710049, Shaanxi, Peoples R China 4.Xi An Jiao Tong Univ, State Key Lab Mech Behav Mat, Xian 710049, Shaanxi, Peoples R China 5.Xi An Jiao Tong Univ, 1 West Bldg,99 Yanxiang Rd, Xian 710054, Shaanxi, Peoples R China
推荐引用方式 GB/T 7714	Wang, Cheng,Lou, Xiaojie. Dielectric, ferroelectric and impedance properties of Li+-doped 0.97Na0.4K0.1Bi0.5TiO3–0.03Ba0.7Sr0.3TiO3 ceramics[J]. Journal of Materials Science: Materials in Electronics,2018,29(17):14589-14595.
APA	Wang, Cheng,&Lou, Xiaojie.(2018).Dielectric, ferroelectric and impedance properties of Li+-doped 0.97Na0.4K0.1Bi0.5TiO3–0.03Ba0.7Sr0.3TiO3 ceramics.Journal of Materials Science: Materials in Electronics,29(17),14589-14595.
MLA	Wang, Cheng,et al."Dielectric, ferroelectric and impedance properties of Li+-doped 0.97Na0.4K0.1Bi0.5TiO3–0.03Ba0.7Sr0.3TiO3 ceramics".Journal of Materials Science: Materials in Electronics 29.17(2018):14589-14595.