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- W2358018872 abstract "La0.8Ba0.2MnO3 powders were synthesized by sol-gel process and the La0.8Ba0.2MnO3/nickel composite samples were prepared by compounding La0.8Ba0.2MnO3 powders and nickel nano-particles with different mass ratios.The permittivity and permeability of complex were measured in the frequency range of 2-18 GHz and the reflection coefficient was calculated according to the measured data.The microwave absorbing properties and absorbing mechanism of these samples were studied.The result shows that the microwave absorbing effect of the composite samples is better than that of the single component.When the mass fraction of La0.8Ba0.2MnO3 is 62.5%,these samples have the best absorption;when the bandwidth is higher than 10 dB it is 3.6 GHz and the peak is 24 dB at the thickness of 2 mm but 3.3 GHz and 44 dB at 1.8 mm.The electromagnetic properties will change when LaMnO3 is doped by Ba2+ at site A and then La0.8Ba0.2MnO3 is compounded with nickel nano-powders which have magnetic property,so that the microwave absorption of the composite system is enhanced greatly because of a common effect of dielectric loss and magnetic loss." @default.
- W2358018872 created "2016-06-24" @default.
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- W2358018872 date "2008-01-01" @default.
- W2358018872 modified "2023-09-28" @default.
- W2358018872 title "Microwave absorbing properties of La_(0.8)Ba_(0.2)MnO_3/Ni/nickel nano-composite system" @default.
- W2358018872 hasPublicationYear "2008" @default.
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