Mathematics & Physics 2016, 9(4), 469–472 УДК 537.611.2, 537.874.7 Influence of Dissipation on Magnetostatic Surface Waves Dispersion Pavel A.Makarov∗ Institute of Exact Sciences and Information Technology Pitirim Sorokin’ Syktyvkar State University Oktyabrsky, 55, Syktyvkar, 167001 Russia Vladimir I. Shcheglov† Institute of Radio-Engineering and Electronics of RAS Mokhovaya, 11-7, Moscow, 125009 Russia Received 21.08.2016, received in revised form 08.10.2016, accepted 14.11.2016 By means of consistent solution of the motion equation for magnetization the consideration of energy dissipation for magnetostatic surface waves propagating on in-plane magnetized ferrite plate is regarded. <...> In this case the dispersion relations for the real and imaginary parts of the wave number are obtained. <...> It is presented that dispersion curves are limited both by the wave number and frequency, and these restrictions tighten with an increase in the damping parameter. <...> Both for forward and backward waves there is a critical value of the damping parameter and propagation angle, beyond which it does not exist. <...> Introduction Magnetostatic surface waves (MSSW) propagating in ferrite films are the basis for the construction of number microwave devices for analog data processing, information transfer and control of high frequency dynamics [1–4]. <...> Minimization of wave losses is a key requirement for its correct work, however the MSSW damping is not studied enough as the vast majority of research is performed without consider attenuation [4–6]. <...> In particular, it limits the maximum value of the wave number, which results in reasing the minimum value of the signal delay time. <...> In the most invesigations [3–7], propagation of MSSW is studied in the special case when wave is transferred perpendicularly to the direction of the permanent external magnetic field. <...> However, the wave propagation at arbitrary angles is essential for some devices, such as multichannel filters [1,2]. <...> Hence, the aim of this research is to analize the influence the damping effect on the dispersion of MSSW at arbitrary angles. ∗makarovpa@syktsu.ru †vshcheg@cplire.ru ⃝ Siberian Federal University. <...> All rights reserved c – 469 – Pavel A.Makarov, Vladimir I. Shcheglov Influence of Dissipation on Magnetostatic Surface Waves . . . 1. <...> An unbounded ferrite slab of thickness d is <...>