Lead zirconate titanate type composition, process for producing the same, piezoelectric body, and

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A lead zirconate titanate type composition contains a three-component system lead zirconate titanate (X), which may be represented by the general formula of Pb(Ni, Nb)O3—PbZrO3—PbTiO3, an (A) constituent, which is Pb in excess of a quantity conforming to a stoichiometric ratio, a (B) constituent, which is Zn, and a (C) constituent, which is at least one kind of rare earth element selected from the group consisting of Ce, Yb, and Dy, the (A) constituent, the (B) constituent, and the (C) constituent being added to the three-component system lead zirconate titanate (X).