Patent ID: 7642693

Claim:
A laminate, which is applied as an electronic component material having a piezoelectric property, comprising: a substrate which is insulating and which is made of any one of (i) a monocrystalline material, (ii) a polycrystalline material, and (iii) an amorphous material; a first wurtzite crystalline layer, made of a wurtzite crystalline structure compound, which has a thickness of 50 nm to 200 nm and which is formed directly on the substrate so as to be in contact with an entire surface of the substrate; a functional material layer which covers an entire surface of the first wurtzite crystalline layer and which is made of an elementary substance of molybdenum or tungsten or of a compound containing at least one of molybdenum and tungsten so as to have a thickness of 100 nm to 300 nm; and a second wurtzite crystalline layer which covers the functional material layer and is made of the wurtzite crystalline structure compound, and the first wurtzite crystalline layer, the functional material layer and the second wurtzite crystalline layer being stacked on or above the substrate in this order so as to have a four layer structure.