Temperature and porosity effect on Rayleigh velocity in superconducting material

Our work's objective is to study the temperature effect and the porosity on ultrasonic wave velocity (Longitudinal wave velocity (VL), transverse wave velocity (VT), and Rayleigh wave velocity (VR)) of superconductor material type Y123 (or YBa2Cu3O7-x). A new model rational of temperature-porosity depending on ultrasonic wave velocities of surface and volume for an Y123 superconducting material was proposed, with each parameter having a distinct physical meaning. The study allows us to deduct the Rayleigh velocity VR following their evolution as temperature and porosity functions, bringing into focus the modelling of both the reflection coefficient R(θ), By analysing it, we were able to determine the variations of the longitudinal wave velocity and transverse wave velocity of the superconducting material considered as a function of the porosity and the temperature, and attenuating oscillations of the acoustic material signature, V(z) curves. The vibration working frequency of 570 MHz at a sensor, according to the porosity. This quantitative investigation is based on the experimental results obtained on porous and non-porous Y123 superconducting materials in the 5 to 300 K temperature range, This enables the estimated evolution of the Rayleigh velocity, VR, variation on the temperature-porosity depending. Since the model can well predict the ultrasonic wave velocities of porous superconducting materials from extreme low temperature to ultrahigh temperature under different porosity rates. In addition, the models obtained could aid well understand the behavior and performance of porous superconducting materials, and offer a new method to describe the temperature-porosity dependent ultrasonic wave’s velocities of superconducting materials.