| abstract |
PROBLEM TO BE SOLVED: To provide a local strain field in an epitaxial layer on cREO. A layered structure (100) for transmitting an acoustic wave, wherein the layered structure (100) includes a substrate layer (102), a second layer (104) on the substrate layer (102), and the like. The second layer (104) comprises a plurality of discrete parts (105) adjacent to each other, and each discrete part (105) of the plurality of discrete parts (105) is a first subregion. It includes (104A) and a second subzone (104B). Further, the epitaxial layer (108) is grown on the second layer (104), the acoustic wave is transmitted on the main surface of the epitaxial layer (108), and the wavelength of the acoustic wave transmitted through the epitaxial layer (108). period (lambda) of approximately equal to the sum of the width (d B) of the first sub-region width (104A) (d a) and the second subregions (104B). [Selection diagram] Fig. 1 |