| http://www.w3.org/ns/prov#value | - In FIGS. 53 and 54A to 54E, the first conductive layer is formed with a thickness of 30 to 50 nm, using high-melting-point metals such as tungsten (W), chromium (Cr), tantalum (Ta), tantalum nitride (TaN), or molybdenum (Mo), or alloys or compounds containing such metals as a main component, while the second conductive layer is formed with a thickness of 300 to 600 nm, using high-melting-point met
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