Effect of Humidity Adsorption on Mixed Valence Dielectric Material LaFe1-xAlxO3

doi:10.1002/pssb.202000342

HFCAS OpenIR

	Effect of Humidity Adsorption on Mixed Valence Dielectric Material LaFe1-xAlxO3
	Ahmed, Rida 1; Rehman, Sajid Ur 2,3; Si, Renjun 1; Wang, Chunchang 1,4
	2020-09-20
发表期刊	PHYSICA STATUS SOLIDI B-BASIC SOLID STATE PHYSICS
ISSN	0370-1972
通讯作者	Wang, Chunchang(ccwang@ahu.edu.cn)
摘要	In mixed-valence colossal dielectric materials, the room temperature Maxwell-Wagner response is commonly assigned, in the past literature, to the electrode effect, grain boundary effect, or internal barrier layer capacitor effect. Another underlying phenomenon is brushed aside, and that is of adsorbance of the hydroxyl ions onto the defect centers on the surface of dielectric material. The properties of dielectric materials, especially those having oxygen vacancies, are sensitive to the atmospheric moisture and easily degrade in the humid environment. To study this effect, a series of LaFe(1 - x)Al(x)O(3)samples (x = 0, 0.1, 0.2, horizontal ellipsis , 0.8, and 1) are prepared by the sol-gel method, and the effect of humidity sensitivity on their dielectric properties is seen. The samples with greater Fe concentration show distinct humidity-sensitive properties with both metal electrodes (Pt and Ag) with a very miniscule difference in their measurement values. The effect of hydroxyl ions is further confirmed by the dielectric measurements after the thermal quenching of the samples that verify the adsorbance of water molecules on the surface of dielectric material.
关键词	defects dielectric materials humidity sensitivity sol-gel method
DOI	10.1002/pssb.202000342
关键词[WOS]	SENSING PROPERTIES ; NANOCOMPOSITE ; CONSTANT ; GIANT
收录类别	SCI
语种	英语
资助项目	National Natural Science Foundation of China[51872001] ; National Natural Science Foundation of China[51502001] ; Open Research Fund Program of the State Key Laboratory of Low-Dimensional Quantum Physics[KF201803]
项目资助者	National Natural Science Foundation of China ; Open Research Fund Program of the State Key Laboratory of Low-Dimensional Quantum Physics
WOS研究方向	Physics
WOS类目	Physics, Condensed Matter
WOS记录号	WOS:000571082500001
出版者	WILEY-V C H VERLAG GMBH
引用统计	被引频次：2[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/334002/104264
专题	中国科学院合肥物质科学研究院
通讯作者	Wang, Chunchang
作者单位	1.Anhui Univ, Sch Phys & Mat Sci, Lab Dielect Funct Mat, Hefei 230601, Peoples R China 2.Chinese Acad Sci, Hefei Inst Phys Sci, High Field Magnet Lab, Hefei 230031, Peoples R China 3.Anhui Univ, Sch Chem & Chem Engn, Hefei 230601, Peoples R China 4.Tsinghua Univ, Dept Phys, State Key Lab Low Dimens Quantum Phys, Beijing 100084, Peoples R China
推荐引用方式 GB/T 7714	Ahmed, Rida,Rehman, Sajid Ur,Si, Renjun,et al. Effect of Humidity Adsorption on Mixed Valence Dielectric Material LaFe1-xAlxO3[J]. PHYSICA STATUS SOLIDI B-BASIC SOLID STATE PHYSICS,2020.
APA	Ahmed, Rida,Rehman, Sajid Ur,Si, Renjun,&Wang, Chunchang.(2020).Effect of Humidity Adsorption on Mixed Valence Dielectric Material LaFe1-xAlxO3.PHYSICA STATUS SOLIDI B-BASIC SOLID STATE PHYSICS.
MLA	Ahmed, Rida,et al."Effect of Humidity Adsorption on Mixed Valence Dielectric Material LaFe1-xAlxO3".PHYSICA STATUS SOLIDI B-BASIC SOLID STATE PHYSICS (2020).