The article is devoted to the study and application of thin films of iron-yttrium garnet (YIG) in microwave devices (tunable generators and filters) on magnetostatic waves. The properties of films, their physical principles of propagation, advantages over YIG-sphere, the problem of arising temperature frequency shifting (TDS) and its solutions are considered. The concept of spin-wave propagation is given. The operation principles of devices based on magnetostatic waves, their prospects and competitive advantages are described. There was performed mathematical modeling of cubic and uniaxial anisotropy of the YIG-film to reduce the TDS. All of that were confirmed by special tests .

Keywords: Yttrium-iron garnet, generators, phase shifters, delay line, tunable filters, anisotropy, spin-waves, liquid phase epitaxy.