Spin−wave resonance as a way of studying the constant of surface anisotropy, using films of Fe–Ni alloy as an example

The effect the thickness and concentration composition of a ferromagnetic thin film have on surface anisotropy constant K S is investigated. Spin–wave resonance is chosen as a way of detecting and measuring the K S value. Fe–Ni thin films are synthesized via chemical deposition. Dependences of K S on the content of Ni in the alloy and a film’s thickness are established.