A piezoelectric composition containing: rare earth metal, alkali earth metal, Fe, W useful for fuel injection valves of internal combustion engines (claimed), piezoelectric transformers and motors and untrasonic transducers

摘要

A piezoelectric composition containing:a rare earth metal, an alkali earth metal, Fe, W. The rare earth metal can be:Eu, Ga, La, Ne, Pr, Pm, Sa. The alkali earth metal can be:Ca, Sr, Ba. An independent claim is included for a method of preparing the composition.