典型文献
A neutron diffraction investigation of high valent doped barium ferrite with wideband tunable microwave absorption
文献摘要：
The barium ferrite BaTixFe12-xO19(x = 0.2,0.4,0.6,0.8)(BFTO-x)ceramics doped by Ti4+were synthesized by a modified sol-gel method.The crystal structure and magnetic structure of the samples were determined by neutron diffraction,and confirm that the BFTO-x ceramics were high quality single phase with sheet microstructure.With x increasing from 0.2 to 0.8,the saturation magnetization(Ms)decreases gradually but the change trend of coercivity(Hc)is complex under the synergy of the changed grain size and the magnetic crystal anisotropy field.Relying on the high valence of Ti4+,double resonance peaks are obtained in the curves of the imaginary part of magnetic conductivity(μ″)and the resonance peaks could move toward the low frequency with the increase of x,which facilitate the samples perform an excellent wideband modulation microwave absorption property.In the x = 0.2 sample,the maximum reflection loss(RL)can reach-44.9 dB at the thickness of only 1.8 mm,and the bandwidth could reach 5.28 GHz at 2 mm when RL is less than-10 dB.All the BFTO-x ceramics show excellent frequency modulation ability varying from 18(x = 0.8)to 4 GHz(x = 0.4),which covers 81％of the investigated frequency in microwave absorption field.This work not only implements the tunable of electromagnetic parameters but also broadens the application of high-performance microwave absorption devices.
文献关键词：
中图分类号：
作者姓名：
Jun LI;Yang HONG;San HE;Weike LI;Han BAI;Yuanhua XIA;Guangai SUN;Zhongxiang ZHOU
作者机构：
School of Physics,Harbin Institute of Technology,Harbin 150001,China;Heilongjiang Provincial Key Laboratory of Plasma Physics and Application Technology,Harbin Institute of Technology,Harbin 150001,China;School of Chemistry and Chemical Engineering,Harbin Institute of Technology,Harbin 150001,China;Key Laboratory for Neutron Physics of CAEP,Institute of Nuclear Physics and Chemistry,Mianyang 621999,China
文献出处：
引用格式：
[1]Jun LI;Yang HONG;San HE;Weike LI;Han BAI;Yuanhua XIA;Guangai SUN;Zhongxiang ZHOU-.A neutron diffraction investigation of high valent doped barium ferrite with wideband tunable microwave absorption)[J].先进陶瓷（英文版）,2022(02):263-272
A类：
BaTixFe12,xO19,BFTO,Ti4+were
B类：
neutron,diffraction,investigation,high,valent,doped,barium,ferrite,wideband,tunable,microwave,absorption,ceramics,by,synthesized,modified,sol,gel,method,crystal,samples,determined,confirm,that,quality,single,phase,sheet,microstructure,With,increasing,from,saturation,magnetization,Ms,decreases,gradually,but,trend,coercivity,Hc,complex,under,synergy,changed,grain,anisotropy,field,Relying,valence,double,resonance,peaks,are,obtained,curves,imaginary,part,conductivity,could,move,toward,low,frequency,increase,which,facilitate,excellent,modulation,property,In,maximum,reflection,loss,RL,can,reach,dB,thickness,only,bandwidth,GHz,when,less,than,All,show,ability,varying,covers,investigated,This,work,not,implements,electromagnetic,parameters,also,broadens,application,performance,devices
AB值：
0.543331
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