A piezoelectric composition containing : rare earth metal, alkali earth metal, Fe, W useful for

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The invention relates to a piezoceramic composition with a nominal empirical formula Pb_AOX14AO> 1-a_AOX14AO> RE_AOX14AO> b_AOX14AO> AE_AOX14AO> c_AOX14AO> [Zr_AOX14AO> x_AOX14AO> Ti_AOX14AO> y_AOX14AO> (Fe_AOX14AO> f_AOX14AO> W_AOX14AO> w_AOX14AO>) _AOX14AO> z_AOX14AO>] O_AOX14AO> 3_AOX14AO>. RE rare-earth metal portion b and AE is an alkaline earth metal is a rare earth metal with a alkaline earth metal portion c with a. Iron is iron and tungsten with a tungsten content [...] z present with a [...] z w f. Moreover, the following relationships apply : a 0 ; w > 0 ; 0.1 f/w 5 ; x > 0 ; y > 0 ; z x + y + z = 1 and > 0. Secondly it is also a method for the production of a piezoceramic material indicated using the piezoceramic composition having the following method steps : a) providing a ceramic green body with the piezoceramic composition and b) heat treating the green body, wherein a piezo-ceramic of the piezoceramic material arises from the piezoceramic composition. The heat treating comprises a calcining and/or a sintering the piezoceramic composition. Under 1000 DEG C. therefore piezoceramic composition compacted metals can The, which melt at a low temperature (for example for. Silver or a silver-Paladium-alloy Low palladium portion ) are sintered together with the piezoceramic composition. The piezoceramic material is, for example, an ultrasonic transducer or a piezoceramic, bending transducer. The piezoceramic material is a multilayer-Piezoactuator particular, the for...