Origin of the Superconductivity in the Y-Sr-Ru-O and Y-Sr-Cu-O Systems
E. Galstyan, Y.Y. Xue, M.N. Iliev, Y. Sun, C.W. Chu
TL;DR
This study investigates the structural, magnetic, and Raman properties of Sr2Y(Ru1-xCux)O6-d double perovskites, revealing that superconductivity emerges in Cu-doped samples under specific thermal conditions, linked to a particular phase.
Contribution
It provides new insights into the conditions and phases associated with superconductivity in Cu-doped Y-Sr-Ru-O systems, especially highlighting the role of high-temperature sintering.
Findings
Superconductivity observed only in partially melted Cu-doped samples.
Superconductivity linked to the 1:2:3 phase YSr2Cu3Ot.
Thermal treatment significantly affects the material's behavior.
Abstract
We report on the structural, magnetic, and Raman-scattering studies of double perovskite structure Sr2Y(Ru1-xCux)O6-d systems made by systematic synthesis processes with various numbers of doping concentrations and sintering temperatures. We observed different behaviors resulting from the different thermal treatments. In particular, superconductivity in Cu-doped Sr2YRuO6 has been observed only for partially melted ceramic materials. We show that superconductivity is associated with the 1:2:3 phase (YSr2Cu3Ot), similar to that of Y-Sr-Cu-O samples sintered at high temperature.
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