Acoustic surface wave component has copper strip structures on piezoelectric material with polycrystalline and/or nanocrystalline joint and/or present in amorphous state with additives

摘要

The component has copper strip structures (1) on a piezoelectric material. The copper strip structures have a polycrystalline and/or nanocrystalline joint and/or are present in the amorphous state, consist of a copper base material with additives of 0 to 10 atom percentage of one or more other metal elements, alloys and/or compounds and are coated with or enclosed by one or more diffusion barrier layers.