Piezoelectric ceramic material, process for the production of the piezoelectric ceramic material, piezoelectric multilayer component and method for the production of the piezoelectric multilayer component

摘要

A piezoelectric ceramic material of the general formula # # str1 # #:P_{1 - c - d}D_c.Z_d(Pbo)_wfor the following applies: 0 c ≦ 0,025; 0 ≦ d ≦ 0,05; 0 ≦ w ≦ 0,05; wherein p is a compound of the formula [pb_{1 - v}Ag^I_v][(Zr_{1 - y}Ti_y)_{1 - u}Cu^Ii_u]O₃ , with 0,50 ≦ 1 – y ≦ 0,60; 0 & u.sub.a ≦ 0,0495; 0 ≦ v ≦ 0,02, and d represents a component of the general formula # # str6 # #:[(M¹O)_{1 - p}(M²O)_p]_a[Nb₂O₅]_{1 - a}where m¹ for ba_{1 - t}Sr_t , with 0 ≦ t ≦ 1, m² for sr and / or ca, and it holds 0 p 1 and 2 / 3 a 1, and z is a compound of general formula # # str6 # #:Pb (l_lR_r)O₃where l is in the oxidation state ii or iii is present, and r in the oxidation stage vi or v, and the following applies: l^Ii is selected from fe, mg, co, ni or cu in combination with r^Vi = W, with l = 1 / 2 and r = 1 / 2, orL^Iii is selected from fe, cr or ga, in combination with r^V = Nb, ta or sb, with l = 1 / 2 and r = 1 / 2, orL^Iii is selected from fe, cr or ga, in combination with r^Vi = W, with l = 2 / 3 and r = 1 / 3.