Article
Investigation of electrophysical properties and structure of gadolinium-based HTSP tapes subjected to more than 10 years of ageing
N. N. Balashov
Joint Institute for High Temperature of the Russian Academy of Sciences, ul. Izhorska, 13-2, 125412, Moscow, Russia
E. A. Golovkova
Joint Institute for High Temperature of the Russian Academy of Sciences, ul. Izhorska, 13-2, 125412, Moscow, Russia
e-mail: eagolovkova@gmail.com
P. N. Degtyarenko
Joint Institute for High Temperature of the Russian Academy of Sciences, ul. Izhorska, 13-2, 125412, Moscow, Russia
S-Innovations LLC, Nauchny proezd, 20-2, 117246, Moscow, Russia
Abstract
To verify the suitability of gadolinium based 2G HTS tapes for future making a liquid nitrogen-cooled DC magnet designed for the investigation of the properties of HTS materials in fields of 1–2 T, the current-voltage characteristics (CVC) of them were measured. The measurements showed no degradation of the critical current of all the samples after storage within 10 years and even an increase of it by ca. 10 %. The approximate physico-chemical explanation of this phenomenon based on the X-ray investigation of the samples is also given.
Keywords: aging; critical current; volt-ampere characteristics; structure; non-stoichiometricity.
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