HIGH TEMPERATURE PIEZOELECTRIC CERAMIC MATERIAL OF BISCO3-PbTIO3, CHEMICALLY DESIGNED TO OPERATE IN HIGH POWER CONDITIONS AND PROCEDURE TO OBTAIN SUCH CERAMIC MATERIAL

摘要

The invention relates to a high temperature piezoelectric BiSc03-PbTi03 ceramic material of formula Bio.36Pbo.64Sco.36-xMnxTio.6403, wherein x ranges from 0.02 to 0.05, which includes a point defect engineering for strongly reduced dielectric and mechanical losses. Furthermore, the invention refers to a procedure for obtaining said ceramic material by conventional sintering of nanocrystalline powders synthesized by mechanochemical activation of a stoichiometric mixture of precursors.