A tunable hybrid metamaterial absorber (MA) in the microwave band was designed, fabricated and characterized. The hybrid MA was realized by incorporating a VO2 film into the conventional resonant MA. By thermally triggering the insulator–metal phase transition of the VO2 film, the impedance match condition was broken and a deep amplitude modulation of about 63.3% to the electromagnetic wave absorption was achieved. A moderate blue-shift of the resonance frequency was observed which is promising for practical applications. This VO2-based MA exhibits many advantages such as strong tunability, frequency agility, simple fabrication and ease of scaling to the terahertz band.

Current driven magnetization reversal in microstructured spin valve with current-in-plane configuration J. Appl. Phys. 105, 07D118 (2009); 10.1063/1.3068483Effect of polarized current on the exchange bias in a current-in-plane spin valve Exchange-biasing asymmetric spin valves using a pulsed current

Frequency dispersion of complex permeability in Mn-Zn and Ni-Zn spinel ferrites and their composite materials

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