X-ray diffraction patterns of the Pb(Zr1 − xTix)O3 ceramics, showing a pure perovskite phase for all the compositions.
Interference due to pyroelectric effect and its correction by means of a 9 T magnetic field.
Specific heats of PZT compositions measured from 1.8 to 300 K with an inset showing the range from 0 to 10 K.
Entropies of PZT compositions from 1.8 to 300 K with an inset showing the range from 0 to 10 K.
Enthalpies of PZT compositions from 1.8 to 300 K with an inset showing the range from 0 to 10 K.
Data fit to the harmonic lattice expansion for the x = 0.455 composition.
β coefficients from Eq. (7) and their standard errors for all compositions. The molecular weights (MW) for all the compositions are shown in the figure legend.
Debye temperatures of the PZT as a function of composition.
Comparison of the specific heat data (in units of J mole−1 K−1) of undoped PZT (this work) with those of “soft” and “hard” PZT of Ref. 5.
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