6. Solid-State and Semiconductor Physics, Physics of Nanostructures

SUPERCONDUCTING PROPERTIES AND STRUCTURAL FEATURES OF SOLID SOLUTIONS ON THE BASE OF BARIUM-SAMARIUM CUPRATE

Aleksandr G. Blinov
1. Nikolaev Institute of Inorganic Chemistry SB RAS Novosibirsk, Russian Federation
2. Novosibirsk State University Novosibirsk, Russian Federation
Margarita Yu. Kameneva
1. Nikolaev Institute of Inorganic Chemistry SB RAS Novosibirsk, Russian Federation
mkamen@che.nsk.su
Ludmila P. Kozeeva
1. Nikolaev Institute of Inorganic Chemistry SB RAS Novosibirsk, Russian Federation
kozeeva@che.nsk.su
The material was received by the Editorial Board: 17.06.2008
Superconducting properties, structural and microstructural features of single-phase polycrystalline samples of bariumsamarium cuprate and solid solution on the base of Sm1+xBa2–xCu3O6+y (123SmSS) with х = 0.0–0.7 prepared in air were studied. It was shown that the solid solution decomposes at 0.12 < х < 0.3 by the spinodal mechanism to form layered microstructures with a variable Sm/Ba ratio. The data obtained are useful for understanding the mechanisms of the formation of possible vortex pinning centers in Ln1+xBa2–xCu3O6+у phases with «light» Ln.

Keywords:
Sm1+xBa2–xCu3O6+δ, superconductivity, solid solution, decomposition.
УДК 538.945;546.431.659.562; 548.73

SUPERCONDUCTING PROPERTIES AND STRUCTURAL FEATURES OF SOLID SOLUTIONS ON THE BASE OF BARIUM-SAMARIUM CUPRATE
References: Blinov A.G., Kameneva M. Yu., Kozeeva, L.P. SUPERCONDUCTING PROPERTIES AND STRUCTURAL FEATURES OF SOLID SOLUTIONS ON THE BASE OF BARIUM-SAMARIUM CUPRATE. Vestnik NSU. Series: Physics. 2009, vol. 4, no. 1. P. 68–74 (in Russ.). DOI: 10.54362/1818-7919-2009-4-1-68-74