Patent ID: 6858332

Claim:
A laminated body comprising a substrate containing at least one of alumina and yttria-alumina composite oxide as a main component; an yttria-alumina composite oxide film; and an intermediary layer interposed between said substrate and said yttria-alumina composite oxide film: wherein a ratio (YAG (420)/M) of a peak intensity YAG (420) of a (420) plane of a garnet phase to a maximum peak intensity M of crystal phases other than said garnet phase is 2.5 or more in said yttria-alumina composite oxide film based on an X-ray diffraction measurement; and a ratio (Y/A) of a molar ratio Y of yttria to a molar ratio A of alumina is not smaller than 0.1 and not larger than 0.9 in said intermediary layer.