Oxygen overdoping in superconducting and non-superconducting Y1-xPrxBa2Cu3Oy

LEVY, G.; MAIOROV, B.; CORVALAN, M.S.; FAINSTEIN, A.; NIEVA, G.

PHYSICA B - CONDENSED MATTER

ELSEVIER SCIENCE BV

Año: 2002 vol. 320 p. 333 - 336

0921-4526

We present the evolution of magnetic and structural properties of Y1-xPrxBa2Cu3Oy (xsimilar to0.5 and x = 1) single crystals and polycrystalline materials when the oxygen concentration y is varied from under- to overdoping. We have found a monotonous evolution of the Pr Neel temperature for x = 1 samples and a maximum of the superconducting critical temperature for the xsimilar to0.5 samples. The structural properties as detected by X-ray diffraction and Raman spectroscopy show no instabilities when crossing the optimal doping region as was found in the x = 0 material.