Effects of oxygenation processes on (Nd,Gd)-Sr₂RuCu₂O_x synthesis

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• 作者：Vecchione ; Antonio ; Gombos ; Marcello ; Tedesco ; Consiglia ; Sisti ; Daniela ; Uthayakumar ; Sivaperumal ; et. al.
• 关键词：Rutheno-cuprate materials ; Synthesis processes ; X-ray powder diffraction
• 刊名：Physica C
• 出版年：2003
• 出版时间：May, 2003
• 年：2003
• 卷：388-389
• 期：Complete
• 页码：391-392
• 全文大小：96.1 K

文摘

In this work we report on the effect of oxygenation processes on the structure and composition of GdSr₂RuCu₂O_x and NdSr₂RuCu₂O_x compounds. By X-ray diffraction analysis it results that the tetragonal Gd-based compound begins to form after prolonged time, while a progressive improvement of cubic Nd-based samples is observed as impurity peaks disappear. Evolution of crystalline structure after oxygen annealing treatments has been studied too.