Abstract

Two‐phase crucibles made of Pb(Zr,Ti)O3 with small additions of either PbO or (ZrxTi1‐x)O2, which provide atmospheres of constant PbO activity, permit study of intrinsic nonstoichiometry by thermogravimetry. The width of the single‐phase region can be determined by alternate equilibration of a sample with crucible atmospheres of high and low PbO activity. The width of this region for Pb(Zr0.5Ti0.5)O3 is 2.48 mol% PbO at 1100°C.

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