Oxygen ordering and superconductivity in DyBaSrCu3O

Interactions of Ba2YCu3O6+x with SrTiO3 substrate

“…Despite the report by Ref. [41] that the Eu-and Gd-analogs are of tetragonal structure, our compounds showed orthorhombic symmetry. It is known that the thermal history of sample preparation can affect the symmetry of materials.…”