Engineering A-site cation deficiency into LaCoO3 thin sheets for improved microwave absorption performance

doi:10.1007/s10853-021-06650-2

HFCAS OpenIR

	Engineering A-site cation deficiency into LaCoO3 thin sheets for improved microwave absorption performance
	Feng, Yingrui 1; Hu, Kang 1; Zhang, Min1 ; Ding, Wei 2,3,4; Kong, Xiangkai 1; Sheng, Zhigao2 ; Liu, Qiangchun 1
	2022-01-03
发表期刊	JOURNAL OF MATERIALS SCIENCE
ISSN	0022-2461
通讯作者	Kong, Xiangkai(kxk@chnu.edu.cn) ; Sheng, Zhigao(zhigaosheng@hmfl.ac.cn) ; Liu, Qiangchun(qchliu@chnu.edu.cn)
摘要	Rationally designing microwave absorption materials with highly efficient and tunable bandwidth is in great demand but remains a huge challenge. In this study, perovskite oxide LaCoO3 thin sheets have been obtained by the hydrothermal synthesis and subsequent annealing process. Then, cation deficiency is introduced to the A-site of LaCoO3 via a selectively etching strategy by FeCl3 solution. The phase characteristics, morphologies, structures, and microwave absorption performance of LaCoO3 thin sheets with A-site cation deficiency have been systematically investigated. The results indicate that a suitable introduction of the A-site cation deficiency is beneficial to induce more dipole polarization, leading to the enhancement of the microwave absorption performance. When the amount of FeCl3 is 0.3 g, the LaCoO3 thin sheets exhibited superior reflection loss characteristics in the range of test frequency. Exhilaratingly, a minimum reflection loss (RL) value of - 56.9 dB at 15.1 GHz can be achieved with a thin thickness of 2.0 mm. Meanwhile, a broad effective absorption bandwidth reaches 5.9 GHz, covering the range of 12.1-18.0 GHz. It is believed that introducing the A-site cation deficiency of LaCoO3 can be used as an effective means for tuning microwave absorption.
DOI	10.1007/s10853-021-06650-2
关键词[WOS]	PEROVSKITE OXIDES ; COMPOSITES ; SHELL ; MICROSPHERES
收录类别	SCI
语种	英语
资助项目	National Natural Science Foundation of China[51602116] ; National Natural Science Foundation of China[11904116] ; Natural Science Foundation of Anhui Province[1708085QB40] ; Natural Science Foundation of Anhui Province[1908085QA36] ; Postdoctoral Research Foundation of China[2016M600492]
项目资助者	National Natural Science Foundation of China ; Natural Science Foundation of Anhui Province ; Postdoctoral Research Foundation of China
WOS研究方向	Materials Science
WOS类目	Materials Science, Multidisciplinary
WOS记录号	WOS:000737865000022
出版者	SPRINGER
引用统计	被引频次：7[WOS] [WOS记录] [WOS相关记录]
文献类型	期刊论文
条目标识符	http://ir.hfcas.ac.cn:8080/handle/334002/127226
专题	中国科学院合肥物质科学研究院
通讯作者	Kong, Xiangkai; Sheng, Zhigao; Liu, Qiangchun
作者单位	1.Huaibei Normal Univ, Sch Phys & Elect Informat, Anhui Prov Key Lab Pollutant Sensit Mat & Environ, Huaibei 235000, Peoples R China 2.Chinese Acad Sci, High Magnet Field Lab, Hefei 230031, Peoples R China 3.Anhui Univ, Inst Phys Sci, Hefei 230601, Peoples R China 4.Anhui Univ, Inst Informat Technol, Hefei 230601, Peoples R China
推荐引用方式 GB/T 7714	Feng, Yingrui,Hu, Kang,Zhang, Min,et al. Engineering A-site cation deficiency into LaCoO3 thin sheets for improved microwave absorption performance[J]. JOURNAL OF MATERIALS SCIENCE,2022.
APA	Feng, Yingrui.,Hu, Kang.,Zhang, Min.,Ding, Wei.,Kong, Xiangkai.,...&Liu, Qiangchun.(2022).Engineering A-site cation deficiency into LaCoO3 thin sheets for improved microwave absorption performance.JOURNAL OF MATERIALS SCIENCE.
MLA	Feng, Yingrui,et al."Engineering A-site cation deficiency into LaCoO3 thin sheets for improved microwave absorption performance".JOURNAL OF MATERIALS SCIENCE (2022).