Experimental study of microwave permeability of thin Fe films

The paper deals with the microwave permeability of thin Fe films deposited on a mylar substrate under different technological conditions. The permeability is measured in the 100 MHz–10 GHz range using coaxial techniques and below 100 MHz using the single coil and single wire techniques. Magnetically uniform films were deposited by ion beam sputtering and revealed the most suitable magnetic properties. Magnetron deposited films have inhomogeneous structure. The measured magnetic spectra have a form that is suitable to FMR. They can be modified by certain technological means such as nitrogen admixture and film thickness variation.