Temperature-dependent anhysteretic behavior of co-doped PZT

Valentin Segouin (1) , Barbara Kaeswurm (2) , Kyle G. Webber (2) , Laurent Daniel (1)

1 GeePs - Laboratoire Génie électrique et électronique de Paris
2 FAU - Friedrich-Alexander Universität Erlangen-Nürnberg = University of Erlangen-Nuremberg

The anhysteretic behavior of a soft Pb(Zr,Ti)O3 was measured from 25 °C to 175 °C. The experimental determination of the anhysteretic polarization curve, combined with classical P-E and S-E loop measurements, allows for an experimental separation of the reversible and dissipative contributions to the ferroelectric behavior. This approach offers insight into the different mechanisms originating at the microscopic scale and the contribution to the macroscopic ferroelectric properties. It was found that the reversible anhysteretic susceptibility χa of the unpoled material increases by 30% from room temperature to 150 °C. On the other hand, the effect on the total susceptibility for a null polarization χc increases only by 17% over the same temperature range. Since the difference between χa and χc reflects the dissipative contribution to the macroscopic ferroelectric behavior, this reveals that dissipation reduces the improvement of susceptibility under increasing temperature. This work illustrates the benefits of separating experimentally the reversible and dissipative contributions to describe the ferroelectric behavior, which can serve as a basis for advanced modeling approaches.

Mots clés: Dielectric properties; Piezoelectricity; Materials analysis; Ferroelectric materials; Ceramics

Domaines: Science des matériaux [cond-mat.mtrl-sci]

Valentin Segouin, Barbara Kaeswurm, Kyle G. Webber, Laurent Daniel. Temperature-dependent anhysteretic behavior of co-doped PZT. Journal of Applied Physics, 2018, 124 (10), pp.104103. ⟨10.1063/1.5040556⟩. ⟨hal-01943246⟩