| http://www.w3.org/ns/prov#value | - For example, where the base electrode is made of YBa.sub.2 Cu.sub.3 O.sub.7, the component analysis using an XPS and the structure analysis using an electron microscope indicate that the exposed surface regionof the base electrode after the heat treatment noted above contains Y, Ba, Cu and oxygen atoms and that there are a case where a crystal phase of an oxide having a thickness of about 1 nanome
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