Patent ID: 8541930

Claim:
A piezoelectric component comprising: a stack of piezoelectric layers arranged one above another; and first and second electrode layers arranged between the piezoelectric layers; wherein the stack has a first piezoelectric layer having a first electric coercive field strength and, directly adjacent thereto, a second piezoelectric layer having a second electric coercive field strength different than the first electric coercive field strength; wherein the first piezoelectric layer and the second piezoelectric layer comprise different ceramic materials, different dopants, different dopant concentrations, different particle sizes of starting materials, different layer thicknesses or a combination thereof; wherein the first and second piezoelectric layers comprise a ceramic material formed from a plurality of constituents having respective concentrations and wherein the first and second piezoelectric layers differ in a concentration of at least one constituent; wherein the first and second piezoelectric layers comprise a ceramic material having the same constituents; wherein the ceramic material has, depending on a concentration of at least one first constituent, a morphotropic phase boundary lying between a first structure and a second structure of the ceramic material; and wherein the concentration of a first constituent of the ceramic material in the first and second piezoelectric layers is in each case chosen in such a way that the first piezoelectric layer comprises the ceramic material having the first structure and the second piezoelectric layer comprises the ceramic material having the second structure.