High pyroelectric response of lead zirconate stannate titanate based antiferroelectric ceramics with low Curie temperature

Structural and Electrical Characteristics of (1−x)Pb(Lu1/2Nb1/2)O3–xPbTiO3 Ceramics with Low PbTiO3

“…However, the maximum value of the ε′ dramatically increases up to 3495 at x = 0.06, then decreases with the increasing of x content. As we all know, the dielectric constant is closely related to the tolerance factor: the more stable the AFE phase is, the smaller the dielectric constant is . Therefore, the dielectric constant increases continuously with the increasing x from 0.01 to 0.06.…”

Tunable Pyroelectricity around the Ferroelectric/Antiferroelectric Transition

“…[1,2,6] Ferroelectric (FE) and antiferroelectric (AFE)m aterials attracted attentiond ue to their large pyroelectric effect, whichi st ypically located at the FE to paraelectric (PE) or FE to AFE phase transition (depolarization temperature, T d ). [3,[7][8][9] These phase transitions can be found in (Pb,Nb)(Zr,Sn,Ti)O 3 (PNZST) and (Pb,La)(Zr,Sn,Ti)O 3 (PLZST) based compositions. [8,[10][11][12] Thep hase transition involves large changes in polarization, whichm odulate the surface electric charge and generateapyroelectric current( I)t hrough acapacitorofs urface area (A)w ith the relationshipshown in Equation (1):…”

“…It is well known that pyroelectric IR detector performance can be increased by maximizing the pyroelectric coefficient ( p ), while minimizing the heat capacity ( C p ) and dielectric loss (tan δ ) . Ferroelectric (FE) and antiferroelectric (AFE) materials attracted attention due to their large pyroelectric effect, which is typically located at the FE to paraelectric (PE) or FE to AFE phase transition (depolarization temperature, T d ) . These phase transitions can be found in (Pb,Nb)(Zr,Sn,Ti)O 3 (PNZST) and (Pb,La)(Zr,Sn,Ti)O 3 (PLZST) based compositions .…”

“…Similar behavior in PLZST-based compositions was previously reported. [9,12,25,27,28,30,31] Because the pyroelectric currenti sr elated to the change in macroscopic polarization with temperature increaseo rd ecrease, it can be expected that the highest current can be produced at the FE to AFE transition. At this transition, the slope of the polarization versus temperature curve is the highest.…”

La-modified Pb(Lu1/2Nb1/2)O3 antiferroelectric ceramics with high energy storage density

“…More importantly, it is reasonable that the more stable the AFE phase is, the smaller the dielectric constant is [26,27]. Vacancies are created upon La 3+ substitution and mismatched cations with higher charge together with the accompanied vacancies act as defects and distribute randomly in a three-dimensional lattice.…”