Preliminary communication

Possible High T_c Superconductivity in Ag Doped PbO_1+δ (0.4 < δ < 0.6)

Danijel Djurek ; A. Volta Applied Ceramics (AVAC), Kesten brijeg 5, 10000 Zagreb, Croatia
Zvonko Medunić ; A. Volta Applied Ceramics (AVAC), Kesten brijeg 5, 10000 Zagreb, Croatia
Anton Tonejc ; Faculty of Science, Physics Dept., Bijenička c. 32, 10001 Zagreb, Croatia
Matija Paljević ; Ruđer Bošković Institute, Bijenička c. 54, 10001 Zagreb, Croatia

Abstract

We have found that the doping of Pb₃O₄ with silver and its treatment in elevated oxygen pressure result in a number of novel metallic phases. The Pb_1-xAg_xO_1+δ phases (0.4 < δ < 0.6; x ≈ 0.1-0.15) prepared at 260-330 °C exhibit electric and magnetic properties compatible with the indication of superconductivity (SC), which appears at T_c ≈ 285 K. SC can be attributed to Ag doped lead sesquioxide Pb_2-xAg_xO_3-y (y ≈ ±0.2).

Keywords

Hrčak ID:

132326

URI

https://hrcak.srce.hr/132326

Publication date:

2.3.1998.

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