| abstract |
A crystal oriented ceramic composite body including a substrate that has a first surface and a second surface, and a {100} oriented ceramic film that is disposed to face the first surface. The {100} oriented ceramic film includes a first sectional surface. The first sectional surface is perpendicular to the first surface, and a 90 degree domain includes a domain wall within a range of ±20 degrees of a normal to the first surface and occupies a surface area of at least 1/3 of the first sectional surface. |