Ultrasonic studies of aluminium-substituted Bi(Pb)-2223 superconductors

Pramana

K B Modi2³  P Venugopal Reddy¹  M P Pandy³  P U Sharma³  S S Shah²  V K Lakhani³  M B Solunke² 

[1] Department of Physics, Osmania University, Hyderabad 500 007, India$$;Department of Physics, Dr B.A.M. University, Aurangabad 431 004, India$$;Department of Physics, Saurashtra University, Rajkot 360 005, India$$

关键词: Superconductor;    ultrasonic pulse transmission technique;    elastic constants.;   

DOI  :  

学科分类：物理（综合）

来源: Indian Academy of Sciences

【 摘 要 】

The compositional dependence of elastic properties of Al3+ -substituted Bi(Pb)-2223 superconducting system with the general formula Bi1.7-𝑥Al𝑥Pb0.3Sr2Ca2-Cu3O𝑦 (𝑥 = 0.0, 0.1, 0.2 and 0.3) have been studied by means of ultrasonic pulse transmission (UPT) technique at 1 MHz (300 K). The elastic moduli of the specimens are computed and corrected to zero porosity. The observed variation of elastic constants with aluminium substitution has been explained on the basis of the strength of inter-atomic bonding. The applicability of heterogeneous metal mixture rule for estimating elastic constants and transition temperature has been tested.

【 授权许可】

Unknown