We report the magnetization and the susceptibility measurements of the RuSr2GdCu2Oy and RuSr2NdCu2Ox perovskite materials. We find that RuSr2GdCu2Oy compound exhibits a magnetic transition at Tn = 135 K followed by a superconducting one with an onset Tc = 35 K. Samples of RuSr2NdCu2Ox material have shown neither a superconductivity nor a magnetic transition. XRD measurements show that in RuSr2NdCu2Ox the Nd ions tend to be substituted by Sr ions in very high percentages. The relevance of this phenomenon on the absence of superconductivity in RuSr2NdCu2Ox is discussed. © 2002 Elsevier Science B.V. All rights reserved.
Crystal structures, magnetic and superconducting properties of the RuSr2NdCu2Ox and RuSr2GdCu2Oy compounds
PACE, Sandro;TEDESCO, Consiglia;ZOLA, Danilo
2002-01-01
Abstract
We report the magnetization and the susceptibility measurements of the RuSr2GdCu2Oy and RuSr2NdCu2Ox perovskite materials. We find that RuSr2GdCu2Oy compound exhibits a magnetic transition at Tn = 135 K followed by a superconducting one with an onset Tc = 35 K. Samples of RuSr2NdCu2Ox material have shown neither a superconductivity nor a magnetic transition. XRD measurements show that in RuSr2NdCu2Ox the Nd ions tend to be substituted by Sr ions in very high percentages. The relevance of this phenomenon on the absence of superconductivity in RuSr2NdCu2Ox is discussed. © 2002 Elsevier Science B.V. All rights reserved.File in questo prodotto:
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