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FeNiMo/Al2O3 composites with different FeNiMo content were prepared by hot-pressing sintering. Interestingly, simultaneous negative permittivity and permeability were realized in FeNiMo/Al2O3 composites with 30% FeNiMo content in the frequency range of 860MHz to 1GHz and in the frequency range of 890MHz to 1GHz for composites with 40% FeNiMo content. Experimental results and theoretical simulations...
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