The Bethe lattice treatment of sound attenuation for a spin- 3/2 Ising model

► The ultrasonic attenuation is studied on Bethe lattice for a spin- 3/2 Ising model. ► The sound attenuation curves are obtained near critical temperatures. ► The effects of temperature, frequency, Onsager coefficient (γ) external field and coordination numbers are examined. ► One peak is obtained near Tt and three peaks near Tc when γ is varied. ► Fixing γ and varying the frequency always leads to two peaks for q=3, 4 and 6.