2022   02   en   p.38-41 V.M. Aliyev, G.I. Isakov, V.I. Eminova, S.Z. Damirova,
Blushing of phase transitions Y0,7Cd0,3Ba2Cu3O7-δ in NTSC 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 Y0,7Cd0,3Ba2Cu3O7-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, Y0,7Cd0,3Ba2Cu3O7-δ, transition rate.
PACS: Fy, 74.20.Mn, 74.72. ± h, 74.25. ± q, 74.25.Jb

Received: 26.04.2022

AUTHORS & AFFILIATIONS

Institute of Physics of the National Academy of Sciences of Azerbaijan, AZ 1143, Baku, H. Javid Ave., 131
E-mail: v_aliev@bk.ru, gudrat.isakov@gmail.com 		REFERENCIES

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