Hardening-softening transition in Fe-doped Pb(Zr,Ti)O3 ceramics and evolution of the third harmonic of the polarization response

By Maxim Morozov, Dragan Damjanovic. 2008

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It is shown that the phase angle of the third harmonic of polarization response (δ3) is very sensitive to the aging state of hard, Fe-doped lead zirconate titanate [Pb(Zr,Ti)O3 or PZT] ceramics and may thus provide rich information on processes responsible for aging in hard ferroelectrics. When hard PZT ceramics experience hardening (aged state)-softening (deaged state) transition, δ3 changes by about 90° at subswitching fields and by about 180° at switching conditions. Evolution of δ3 with time, temperature and electric field amplitude during deaging suggests that at least two mechanisms of charge migration, one short-range and one long-range, may participate in the deaging process.

Subfields: Electronic, Optical and Magnetic Materials, Materials Chemistry

View Paper: https://www.semanticscholar.org/paper/efcb45e90f0e3d9a8554aef50ac6b671d074dd68