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Microwave permittivity of SiC-Al2O3 composite powder prepared by sol-gel and carbothermal reduction LIU Xiao-kui(刘晓魁), LUO Fa(罗 发), ZHU Dong-mei(朱冬梅), ZHOU Wan-cheng(周万城) State Key..., and the thermodynamic analysis was performed systematically. Moreover, the variation of its microwave permittivity with different atomic ratio of Al/Si was investigated in the frequency range of 8.2-12.4 GHz......
J. Cent. South Univ. (2016) 23: 2747-2753 DOI: 10.1007/s11771-016-3336-1 Enhanced dielectric permittivity of graphite oxide/polyimide composite films LI Jun(李俊), WANG Ya(王亚), LI Heng-feng(李衡峰... and the thermal treatment induced reduction of GO further enhanced the dielectric permittivity of the resulting GO–PI composites. The dielectric permittivity of the GO–PI composites exhibited a typical......
prepared using monoacid, the particle size of the powders prepared using diacid obviously increases, and the grain size, the relative density and the whole permittivity of the ceramics increase...:CaCu3Ti4O12; sol-gel method; decanedioic acid; permittivity......
Complex Permittivity and Microwave Absorbing Property of Si3N4-SiC Composite CeramicGuopeng Zheng, Xiaowei Yin , Jie Wang, Mengluo Guo and Xi Wang Science and Technology on Thermostructure Composite... infiltration using porous Si3N4 ceramic as preform. The average grain size of SiC was 30 nm. Relationship between SiC content and relative complex permittivity of Si3N4-SiC within the frequency range......
Characteristics of permittivity and permeability spectra in range of 2-18 GHz microwave frequency for La1-xSrxMn1-yByO3 (B=Fe, Co, Ni) ZHOU Ke-sheng(周克省)1, WANG Da(王 达)1, 2, HUANG Ke-long(黄可龙)3... at site B were prepared by sol-gel as an microwave absorption material and their permittivity and permeability spectra were measured by microwave vector network analyzer in the frequency range of 2-18 GHz......
Doped ceramics of indium oxides for negative permittivity materials in MHz-kHz frequency regionsGuohua Fan1,Zhongyang Wang1,Kai Sun2,Yao Liu1,Runhua Fan21. Key Laboratory for Liquid-Solid Structural...="ChDivSummary">Negative permittivity has been widely studied in various metamaterials and percolating composites, of which the anomalous dielectric behavior was attributed to critical structural properties......
Negative permittivity derived from inductive characteristic in the percolating Cu/EP metacompositesKai Sun1,Jiahao Xin1,Yaping Li1,Zhongyang Wang2,3,Qing Hou4,Xiaofeng Li1,Xinfeng Wu1,Runhua...,University College London摘 要:Recently,increasing attention has been concentrated on negative permittivity with the development of the emerging metamaterials composed......
High permittivity and low dielectric loss analysis of lead free Sr1-xLax(Ti0.5Fe0.5)O3M. R. Shah1, A. K. M. Akther Hossain2(1. Department of Physics, Primeasia University, Banani, Dhaka-1213... permittivity (about 104) and low dielectric loss (about 10-3). SLTFO also display minimum dielectric loss within the lower and higher limits of frequency, indicating that the samples are of good quality......
Hole-pinned defect-dipoles induced colossal permittivity in Bi doped SrTiO3 ceramics with Sr deficiencyYulong Qiao1,Weili Li1,2,Yulei Zhang1,Lu Jing1,Chang Gao1,Wenping Cao3,Dan Xu4,Weidong Fei1,51...), were prepared via conventional solid-state reaction route. A colossal permittivity(CP) over 104 with low dielectric loss less than 0.05 was obtained in x=0.05 Sr1-1.5 xBixTiO3 ceramics. In addition......
of the hollow fiber was constructed. The interaction with electromagnetic wave was analysed and the theoretical equations of axial permeability and permittivity, radial permeability and permittivity were derived... are the key factors for the characteristics of the hollow fiber. Values of the complex permeability and permittivity are beneficial to improve the electromagnetic matching ability and microwave......
