A Study of Temperature Effect on the Rayleigh Velocity of Superconductor Material Type Bi2212 Using Acoustic Techniques
N. Sayoud, S. Chouf, A. Boudour
Badji Mokhtar University, B.P. 12, CP 23000 Annaba, Algeria
Received: 28.12.2017. Download: PDF
In the present work, the effect of the temperature on Rayleigh velocity $V_R$ of superconductor material type Bi2212 is studied, focusing on the modelling of both the reflection coefficient $R$($\theta$) and the acoustic signature $V$($z$). Consequently, the study allows us to deduct the velocities of the acoustic waves of surface and volume, following their evolution as functions of temperature. The study is carried out in case of porous and non-porous superconductor material type Bi2212 in a temperature range from 10 to 295 K and with work frequency of 600 MHz. This modelling study is based on experimental results obtained on porous and non-porous Bi2212 superconducting materials in the temperature range of 10 to 295 K at a frequency of 600 MHz.
Key words: Rayleigh velocity, reflection coefficient, acoustic signature, superconductor type Bi2212, porosity.
PACS: 06.60.Mr, 62.20.de, 62.30.+d, 62.65.+k, 74.25.Ld, 74.72.Hs, 81.70.Cv
Citation: N. Sayoud, S. Chouf, and A. Boudour, A Study of Temperature Effect on the Rayleigh Velocity of Superconductor Material Type Bi2212 Using Acoustic Techniques, Metallofiz. Noveishie Tekhnol., 40, No. 9: 1173—1184 (2018)