Abstract: A ferroelectric ceramic material, for the storage of information in electrostatic printing processes, which ferroelectric ceramic material has a coercive force of less than 200 V/mm. The ferroelectric ceramic material consists of a ceramic perovskitic mixed crystal, which contains one or more components from each of Groups 1 and 2, whereby Group 1 contains the components PbTiO.sub.3, BaTiO.sub.3, Pb(Fe.sub.1/2 Nb.sub.1/2)O.sub.3 and Pb(Zn.sub.1/3 Nb.sub.2/3)O.sub.3 and Group 2 contains the components Pb(Mg.sub.1/3 Nb.sub.2/3)O.sub.3, Pb(Ni.sub.1/3 Nb.sub.2/3)O.sub.3, Pb(Fe.sub.2/3 W.sub.1/3)O.sub.3 and Pb(Mn.sub.1/2 Nb.sub.1/2)O.sub.3. The proportions of the components from the two groups in the mixed crystal are determined according to the following equation: ##EQU1## where X.sub.i is the mole fraction of the i-component, T.sub.ci is the Curie point of the i-component and T.sub.cM is the Curie point of the mixture between 50.degree. C. and 100.degree. C.

Abstract: The invention relates to a dielectric composition which, in particular, is useable in the thick layer technology for making printed condensers by means of the screen printing process. The composition contains as a dielectric active substance Bi.sub.2 [A.sub.2-x.sup.a+ Nb.sub.x ], whereby the condition a (2-x)+5x=8 is applied and A are one of a plurality of metal ions from the group Mg.sup.2+,Ni.sup.2+,Zn.sup.2+,Co.sup.2+,Ca.sup.2+,Sn.sup.2+,Mn.sup.2+,Co.s up.3+ Mn.sup.3+,Al.sup.3+ and Cr.sup.3+.