We report superconductivity with Tc, onset = ∼10 K in polycrystalline samples of Pr2Ba4Cu7O15 - δ possessing metallic double chains. A reduction treatment on as-sintered samples causes not only the enhanced metallic conduction but also the appearance of superconductivity, in strongly contrast with the oxygen removal effect of superconducting Y2Ba4Cu7O15-δ.
Physica C Superconductivity
- Pub Date:
- September 2004
- Pr<SUB>2</SUB>Ba<SUB>4</SUB>Cu<SUB>7</SUB>O<SUB>15 - δ</SUB>;
- Condensed Matter - Superconductivity