Superconducting state of GdBa2Cu3O6+<i>δ</i> single crystal (<i>δ</i> = 0.56; 0.75)
G. G. LevchenkoPhysicotechnical Institute, Ukrainian Academy of Sciences, DonetskA. V. PashchenkoPhysicotechnical Institute, Ukrainian Academy of Sciences, DonetskV. DyakonovPhysicotechnical Institute, Ukrainian Academy of Sciences, DonetskV. MarkovichPhysicotechnical Institute, Ukrainian Academy of Sciences, DonetskI. FitaPhysicotechnical Institute, Ukrainian Academy of Sciences, DonetskA.V. PavlyukInstitute of Inorganic Chemistry, Russian Academy of Sciences, NovosibirskL. P. KozeevaInstitute of Inorganic Chemistry, Russian Academy of Sciences, Novosibirsk
ABI
Аннотация
The temperature dependence of the critical current density is determined from an analysis of the temperature dependences χ′(T) and χ″(T) the real and imaginary components of magnetic susceptibility of GdBa2Cu3O6+δ single crystals by using Bean’s model of the critical state. The superconducting state of this material was found to be very complex due to the qualitative composition of the samples and the possibility of dimensional crossover of the superconducting properties.
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