Ultrasonic Attenuation in CeAl₃

Abstract

Ultrasonic attenuation due to electron-phonon interaction has been calculated in the intermetallic compound CeAl₃ in low temperature region between 0.5 K and 40 K. The resistivity of the substance is very large as compared to metals. Even in the low temperature region the ultrasonic attenuation due to electron-phonon interaction is very small, and as the temperature increases the variation of attenuation is of the same nature as common metals.