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Quantitative correlation between structural (dis-)order and diffuseness of phase transition in lead scandium tantalate
T. Granzow, A. Aravindhan, Y. Nouchokgwe +9
Ferroelectrics show a phase transition to a paraelectric phase at a well-defined transition temperature. Introducing disorder makes this transition diffuse, and the system becomes…
Tunable electrocaloric effect in lead scandium tantalate through calcium doping
Youri Nouchokgwe, Natalya S. Fedorova, Pranab Biswas +11
State-of-the-art electrocaloric cooling prototypes rely on the conventional electrocaloric effect of ferroelectric lead scandium tantalate (PbSc0.5Ta0.5O3, PST), which peaks near r…
Origin of the Large Negative Electrocaloric Effect in Antiferroelectric PbZrO3
Pablo Vales-Castro, Romain Faye, Miquel Vellvehi +9
We have studied the electrocaloric response of the archetypal antiferroelectric PbZrO3 as a function of voltage and temperature in the vicinity of its antiferroelectric-paraelectri…