Ultrasonic velocity studies on Tl2Ba2Ca2Cu3O10 superconductor
Ultrasonic longitudinal and shear velocities propagated at 7-10 MHz in bulk Tl2Ba2Ca2Cu3O10 have been measured between 80 K and 300 K. Shear velocity measurements revealed a pronounced slope discontinuity of 421 ppm/K at around 160 K. A similar slope change was not observed in the longitudinal mode....