2022   01   en   p.26-28 V.M. Aliyev, J.A. Rahimov1, G.A. Aliyeva2,
Determination of parameters of dily phase transitions (T0, a, L0 (T), dL0 /dT) Y0,5Cd0,5Ba2Cu3O7-δ HTSC material		  pdf 

ABSTRACT

The effect of substitution of Y for Cd on the mechanism of the formation of excess conductivity in YBa2Cu3O7-δ polycrystals is investigated. With the substitution of Cd for Y, the resistivity ρ of the Y0,5Cd0,5Ba2Cu3O7-δ sample increases noticeably, and the value of the critical temperature of the transition to the superconducting state (Tc) decreases. It is shown that superconducting phase transitions (PTS) in them have a diffuse character. The parameters of the blurring of the FP are determined: T0, a, L0 (T), and dL0 /dT. It was found that in YBa2Cu3O7-δ HTSC material, partial substitution of Y for Cd atoms significantly reduces the PT region and increases dL0 /dТ.

Keywords: superconductivity, phase transition, Y0,5Cd0,5Ba2Cu3O7-δ, transition rate
PACS: 74.25. Fy, 74.20. Mn, 74.72. ± h, 74.25. ± q, 74.25. Jb

Received: 17.01.2022

AUTHORS & AFFILIATIONS

     Institute of Physics of the National Academy of Sciences of Azerbaijan, H. Javid Ave., 131, Baku, AZ 1143
1. Azerbaijan Medical University AZ 1022, Baku, st. Bakikhanov, 23
2. Institute INKhP NAS of Azerbaijan AZ 1025, Baku, Khojaly ave., 30
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