| http://www.w3.org/ns/prov#value | - wherein the thin layer provided on the substrate is a thin layer composed of at least one compound selected from the group consisting of TiO2, RTiO3 (wherein R represents an alkaline earth metal atom), AB2???xCxD3???xExO10 (wherein A represents a hydrogen atom or an alkali metal atom, B represents an alkaline earth metal atom or a lead atom, C represents a rare earth atom, D represents a metal ato
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