Optimization of Ni_(0.95-x)Zn_(x)Co_(0.05)Fe_(1.90)Mn_(0.02)O_(4) ceramics with promising magneto-dielectric properties for VHF antenna miniaturization  

作　　者：Zhuohao Xiao Chuanhu Wang Lie Liu Zhihong Yang Ling Bing Kong 

机构地区：[1]School of Materials Science and Engineering,Jingdezhen Ceramic Institute Jingdezhen 333001,Jiangxi,P.R.China [2]School of Materials Science and Engineering,Nanyang Technological University 50 Nanyang Avenue,Singapore 639798 [3]Department of Material and Chemical Engineering Bengbu University,Bengbu 233030,Anhui P.R.China [4]General Test Systems Inc.,Shenzhen 518102,Guangdong,P.R.China [5]College of Materials Science and Technology Nanjing University of Aeronautics and Astronautics Nanjing 211100,P.R.China

出　　处：《Journal of Advanced Dielectrics》2018年第1期11-16,共6页先进电介质学报（英文）

基　　金：supported by the Natural Science Fund of China(51762023);the JiangXi Association for Science and Technology,the Jiangxi Provincial Department of Education,and the Training Program of Outstanding Young Scientists in Jiangxi Province(20171BCB23070).

摘　　要：Magnetic,dielectric and DC conductive properties of Ni_(0.95-x)Zn_(x)Co_(0.05)Fe_(1.90)Mn_(0.02)O_(4)(with x=0-0.20 at an interval of 0.05)ferrite ceramics were studied,in order to develop magneto-dielectric materials with almost equal values of relative permeability and permittivity,for the miniaturization of HF(3-30 MHz)and VHF(30-90MHz and 100-300 MHz)antennas.The ferrite ceramics were prepared by using the conventional two-step sintering process.The real part of relative permeability is increased almost linearly with increasing concentration of Zn,while that of relative permittivity keeps nearly unchanged.It is found that promising magneto-dielectric materials,with close values of real permeability and permittivity over 30-90 MHz(VHF),can be obtained for the samples at Zn concentrations between x=0.05 and x=0.10.

关 键 词：Magneto-dielectric materials complex permittivity complex permeability antenna miniaturization ferrite ceramics 

分 类 号：TQ1[化学工程]