典型文献
Defect-induced insulator-metal transition and negative permittivity in La1-xBaxCoO3 perovskite structure
文献摘要：
The development of negative permittivity materials in multifunctional applications requests expansion of their operating frequency and improvement of stability of negative permittivity.Low electron density is beneficial to reduce plasma frequency so that negative permittivity is achieved in kHz region.Neg-ative permittivity achieved by percolating composites is restricted in practicality due to its instability nature at high temperatures.To achieve temperature-stable negative permittivity in kHz region,mono-phase La1-xBaxCoO3 ceramics were prepared,and the transition from dielectric to metal was elaborated in the perspective of electrical conductivity and negative permittivity.The plasma-like negative permit-tivity is attained in kHz region,which is interpreted by the collective oscillation of low electron density.The temperature-stable negative permittivity is based on the fact that the plasmonic state will not be undermined at high temperatures.In addition,zero-crossing behavior of real permittivity is observed in La0.9Ba0.1CoO3 sample,which provides a promising alternative to designing epsilon-near-zero materials.This work makes the La1-xBaxCoO3 system a source material for achieving effective negative permittivity.
文献关键词：
中图分类号：
作者姓名：
Zaixin Wei;Zhongyang Wang;Ciqun Xu;Guohua Fan;Xiaoting Song;Yao Liu;Runhua Fan
作者机构：
Key Laboratory for Liquid-Solid Structural Evolution and Processing of Materials(Ministry of Education),Shandong University,Jinan 250061,China;State Key Lab of Metal Matrix Composites,School of Materials Science and Engineering,Shanghai Jiao Tong University,Shanghai 200240,China;Department of Engineering Mathematics,University of Bristol,Bristol BS8 1TW,United Kingdom;College of Ocean Science and Engineering,Shanghai Maritime University,Shanghai 201306,China
文献出处：
引用格式：
[1]Zaixin Wei;Zhongyang Wang;Ciqun Xu;Guohua Fan;Xiaoting Song;Yao Liu;Runhua Fan-.Defect-induced insulator-metal transition and negative permittivity in La1-xBaxCoO3 perovskite structure)[J].材料科学技术（英文版）,2022(17):77-84
A类：
xBaxCoO3,percolating,9Ba0,1CoO3
B类：
Defect,induced,insulator,metal,transition,negative,permittivity,La1,perovskite,structure,development,materials,multifunctional,applications,requests,expansion,their,operating,frequency,improvement,Low,electron,density,beneficial,reduce,plasma,that,achieved,kHz,region,Neg,by,composites,restricted,practicality,due,its,instability,nature,high,temperatures,To,stable,mono,phase,ceramics,were,prepared,from,dielectric,was,elaborated,perspective,electrical,conductivity,like,attained,which,interpreted,collective,oscillation,low,fact,plasmonic,state,will,not,undermined,In,addition,zero,crossing,behavior,real,observed,La0,sample,provides,promising,alternative,designing,epsilon,near,This,work,makes,system,source,achieving,effective
AB值：
0.515175
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