27 August 2017 to 1 September 2017
RAI Congress Center, Amsterdam, The Netherlands
Europe/Amsterdam timezone

Temperature Evolution of Pinning Force in GdBaCuO Coated Conductors with Artificial Pinning Centers

31 Aug 2017, 13:45
1h 45m
Posters Area

Posters Area

Poster Presentation of 1h45m F4 - ReBCO Wires and Cables Thu-Af-Po4.08

Speaker

Igor Rudnev (National Research Nuclear University MEPhI (Moscow Engineering Physics Institute))

Description

In this report we present results of analysis of pinning force as well as pinning energy in PLD $GdBa_2 Cu_3 O_{7-x} $ coated conductors doped by $BaSnO_3$ and $BaZrO_3$. Concentrations of both additions in the studied samples have varied from 0 to 18 mole per cent. For all samples we measured magnetization curves in the range of temperature 4,2-77 K and magnetic field up to 14 T. Dependencies of critical current on applied magnetic field $j_c (H)$ were obtained from magnetization curves based on Bean model. Analysis of pinning force was carried out based on the Dew-Hughes approach $F_p / F_{p−max} = b^p (1 − b)^q (b = B/B_{irr})$ by used Kramer’s plot $J_c ^{0.5} B^{0.25}$ for determination of irreversibility field $B_{irr}$. We found that the normalized pinning force tends to change both functional dependency and peak position as the temperature varies. This result indicates the change of pinning mechanism with decreasing temperature.

Submitters Country Russia

Primary author

Igor Rudnev (National Research Nuclear University MEPhI (Moscow Engineering Physics Institute))

Co-authors

Sergei Pokrovskii (National Research Nuclear University MEPhI (Moscow Engineering Physics Institute)) Vsevolod Chepikov (SuperOx) Sergey Lee (SuperOx Japan LLC) Sergey Samoilenkov (SuperOx) Andrey Kaul (SuperOx) Vadim Amelichev (SuperOx) Alexander Molodyk (SuperOx) Valery Petrykin (SuperOx Japan LLC) Dmitry Abin (National Research Nuclear University MEPhI (Moscow Engineering Physics Institute)) Nikolay Mineev (National Research Nuclear University MEPhI (Moscow Engineering Physics Institute))

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