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Solid-State Electronics
The investigation of critical temperature $T_c$ of homophase superconductors Bi$_{1.7}$Pb$_{0.3}$Sr$_{2}$Ca$_{(n-1)}$Cu$_{n}$ O$_{y}$ ($n$ = 3, 4, 5) and current–voltage characteristics of inp semiconductor–Bi/Pb superconductor (2223, 2234, 2245) sandwich pairs
D. D. Gulamovaa, A. V. Karimova, D. G. Chigvinadzeb, S. M. Ashimovb, O. V. Magradzeb, S. Kh. Bobokulova, Zh. Sh. Turdieva, Kh. N. Bakhronova a Institute for Material Sciencies of Academy of Sciencies of Republic Uzbekistan
b Andronikashvili Institute of Physics, Tbilisi, Georgia
Abstract:
The electrophysical properties of semiconductor–superconductor sandwich pairs (InP–Bi/Pb 2223, 2234, 2245) are investigated, in which homophase superconductors based on bismuth cuprates with high reproducible critical temperatures of superconducting transition $T_c$ = 107–180 K are used. The advantage of melt solar technology for obtaining superconducting materials is demonstrated. The microstructure and phase composition of strongly anisotropic superconductors with nominal composition Bi$_{1.7}$Pb$_{0.3}$Sr$_{2}$Ca$_{(n-1)}$Cu$_{n}$ O$_{y}$ ($n$ = 3, 4, 5) are researched. A technique of experimental determination of superconducting transition critical temperatures $T_c$ in single-phase and homophase HTSC samples is presented. The current–voltage characteristics of InP–Bi/Pb pairs are investigated. The relationship between the electrical resistance of sandwich pairs and superconductor critical temperature $T_c$ is established.
Received: 28.03.2017 Revised: 04.10.2018
Citation:
D. D. Gulamova, A. V. Karimov, D. G. Chigvinadze, S. M. Ashimov, O. V. Magradze, S. Kh. Bobokulov, Zh. Sh. Turdiev, Kh. N. Bakhronov, “The investigation of critical temperature $T_c$ of homophase superconductors Bi$_{1.7}$Pb$_{0.3}$Sr$_{2}$Ca$_{(n-1)}$Cu$_{n}$ O$_{y}$ ($n$ = 3, 4, 5) and current–voltage characteristics of inp semiconductor–Bi/Pb superconductor (2223, 2234, 2245) sandwich pairs”, Zhurnal Tekhnicheskoi Fiziki, 89:4 (2019), 583–589; Tech. Phys., 64:4 (2019), 540–546
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https://www.mathnet.ru/eng/jtf5647 https://www.mathnet.ru/eng/jtf/v89/i4/p583
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