Pulsed laser deposition of superconducting REBa₂Cu₃O_7−x thin films

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• 作者：Di Trolio ; A. ; Morone ; A.
• 关键词：Pulsed laser deposition ; Superconducting thin films ; Transition temperature
• 刊名：Applied Surface Science
• 出版年：2003
• 期刊代码：6_01694332
• 类别：ms
• 出版时间：March 15, 2003
• 卷：208-209
• 期：Complete
• 页码：626-631
• 文件大小：125 K

摘要

Superconducting thin films of REBa₂Cu₃O_7−x (RE: Sm, Eu, Gd) (RBCO) were deposited by a pulsed laser ablation technique on strontium titanate substrates at different substrate temperature and reduced oxygen pressure. The resistivity versus temperature measurements show the onset and the offset of the superconducting transition between 95 and 70K. For all the investigated rare earths, we find a substrate temperature value for which morphological and structural analyses, performed by scanning electron microscopy and X-ray diffraction, are also reported the grown film has the offset of the superconducting transition above 90K. Morphological and structural analyses, performed by scanning electron microscopy and X-ray diffraction, are also reported and discussed.