Preparation and thermal/dielectric properties of medium/high entropy perovskite titanate ceramics

doi:10.1016/j.ceramint.2024.05.291

IMR OpenIR

	Preparation and thermal/dielectric properties of medium/high entropy perovskite titanate ceramics
	Zhang, Jingying 1; Tian, Jindan 1; Xing, Bohang 1; Wang, Jiemin 2; Liu, Bin 3; Nian, Hongqiang 1; Zhao, Zhe 1,4
通讯作者	Nian, Hongqiang(hqnian@sit.edu.cn) ; Zhao, Zhe()
	2024-09-01
发表期刊	CERAMICS INTERNATIONAL
ISSN	0272-8842
卷号	50 期号:17 页码:29954-29965
摘要	High -entropy ceramics have garnered significant attention in recent years owing to their exceptional properties and structural diversity. In this work, single-phase medium/high entropy ceramics, namely (Ca0.2Sr0.4Ba0.4) (Zr0.5Ti0.5)O3 and (Ca0.2Sr0.4Ba0.4)(Zr0.1Ti0.9)O3, were successfully designed and prepared utilizing Spark Plasma Sintering (SPS). A comprehensive investigation was conducted into the phase structure, microscopic morphology, dielectric properties, and thermal behavior of these ceramics. It was observed that all ceramics maintained a cubic perovskite structure (space group: Pm 3 m), and the introduction of multi -element doping rendered them more stable across a wide frequency and temperature range. Notably, (Ca0.2Sr0.4Ba0.4)(Zr0.5Ti0.5) O3 exhibited remarkably low dielectric loss (0.0001 at 1 kHz) at room temperature, along with excellent dielectric temperature stability (25-400 degrees C). By reducing the zirconium concentration in (Ca0.2Sr0.4Ba0.4) (Zr0.1Ti0.9)O3, a slight decrease in dielectric temperature stability was observed (25-350 degrees C); however, it demonstrated lower thermal conductivity (0.41 W/(m center dot K), 1200 degrees C) and maintained good high -temperature stability. The discovery highlights the promising practicality of both ceramics for high -temperature dielectric applications.
关键词	High-entropy Perovskite structure Dielectric properties Thermal properties
资助者	National Key R & D Program of China ; National Natural Science Foundation of China ; Key Research and Development Projects in Zhejiang Province ; Leading Entrepreneurial Team Projects in Zhejiang Province
DOI	10.1016/j.ceramint.2024.05.291
收录类别	SCI
语种	英语
资助项目	National Key R & D Program of China[2021YFB3702300] ; National Natural Science Foundation of China[52172071] ; Key Research and Development Projects in Zhejiang Province[2022C01186] ; Leading Entrepreneurial Team Projects in Zhejiang Province[2021R02016]
WOS研究方向	Materials Science
WOS类目	Materials Science, Ceramics
WOS记录号	WOS:001261188200001
出版者	ELSEVIER SCI LTD
引用统计
文献类型	期刊论文
条目标识符	http://ir.imr.ac.cn/handle/321006/187696
专题	中国科学院金属研究所
通讯作者	Nian, Hongqiang; Zhao, Zhe
作者单位	1.Shanghai Inst Technol, Sch Mat Sci & Engn, Shanghai, Peoples R China 2.Chinese Acad Sci, Inst Met Res, Shenyang Natl Lab Mat Sci, Adv Ceram & Composites Div, Shenyang, Peoples R China 3.Shanghai Univ, Sch Mat Sci & Engn, Shanghai, Peoples R China 4.Jiaxing CeramPlus Technol Co Ltd, Jiaxing, Peoples R China
推荐引用方式 GB/T 7714	Zhang, Jingying,Tian, Jindan,Xing, Bohang,et al. Preparation and thermal/dielectric properties of medium/high entropy perovskite titanate ceramics[J]. CERAMICS INTERNATIONAL,2024,50(17):29954-29965.
APA	Zhang, Jingying.,Tian, Jindan.,Xing, Bohang.,Wang, Jiemin.,Liu, Bin.,...&Zhao, Zhe.(2024).Preparation and thermal/dielectric properties of medium/high entropy perovskite titanate ceramics.CERAMICS INTERNATIONAL,50(17),29954-29965.
MLA	Zhang, Jingying,et al."Preparation and thermal/dielectric properties of medium/high entropy perovskite titanate ceramics".CERAMICS INTERNATIONAL 50.17(2024):29954-29965.