Study of reflection and transmission spectra of arrays of heterogeneous ferromagnetic nanowires in the terahertz and far infrared ranges

In the frequency range from 16 to 50 THz, transmission, reflection, and absorption spectra of arrays heterogeneous Ni/Co, FeNi/Co, Ni/Fe nanowires grown in track polymer membranes by galvanic method have been studied. The showed that fraction radiation power absorbed its spectrum depend on materials nanowires. features can be explained accumulation nonequilibrium spin due electron diffusion relaxation stimulated external terahertz (THz) radiation, which used create a THz detector. addition, negative was found for FeNi/Co nanowires, laser effect spin-flip transitions, source operating at room temperature. Keywords: spectroscopy, metamaterial.