Characteristic electrical properties of Pb(Sc1/2Nb1/2)O3–PbTiO3 ferroelectric crystals

Abstract

Perovskite-type Pb(Sc 1/2 Nb 1/2 )O 3 -PbTiO 3 single crystals have been obtained by the top-seeded solution growth technique. The structure type and phase purity were verified by X-ray diffraction analyses. Crystals with morphotropic phase boundary compositions can be grown from nominal material with PT content in the range of 0.50-0.53. The dielectric spectra of the as-grown crystals present normal ferroelectric behavior.

Two New Non-centrosymmetric n = 3 Layered Dion–Jacobson Perovskites: Polar RbBi2Ti2NbO10 and Nonpolar CsBi2Ti2TaO10

“…As one of the most versatile classes of materials, perovskites have been continuously attracted by materials scientists owing to their fascinating characteristics such as magnetic, superconductive, dielectric, thermoelectric, electrocatalytic, ferroelectric, and optical properties. − Specific families of the perovskites with layered structures are generally classified as Ruddlesden–Popper (RP; A′ 2 [A n –1 B n O 3 n +1 ]), − Aurivillius ((Bi 2 O 2 )­[A n –1 B n O 3 n +1 ]), − and Dion–Jacobson (DJ; A′[A n –1 B n O 3 n +1 ]) phases. − While each of the different layered perovskites shares common two-dimensional anionic slabs ([A n –1 B n O 3 n +1 ]), the motifs separating the layers (A′ or Bi 2 O 2 ) and the subsequent offsetting of the layers are dissimilar. Many interesting aforementioned characteristics found from bulk ABO 3 perovskites have been also similarly observed from layered perovskites. − Interestingly, however, while the greater part of the known ABO 3 perovskites crystallized in centrosymmetric (CS) space groups, a number of layered perovskites were found to crystallize in non-centrosymmetric (NCS) polar structures. − Several representative NCS polar layered perovskites are Ca 3 Ti 2 O 7 (RP), Bi 4 Ti 3 O 12 (Aurivillius), , and CsBiNb 2 O 7 (DJ). ,, Since very enchanting properties such as pyroelectricity and ferroelectricity may be expected from polar materials, layered perovskites with polar symmetry must be one of the most promising materials for thermal detectors, pollution monitors, and random-access memories.…”

Relaxor-based ferroelectric single crystals grown by top-seeded solution growth method

“…得到Al 3+ -0.7PMN-0.3PT单晶的居里温度、 相变温度分别为135和105℃. 相比于0.68PMN-0.32PT 单晶 [39] , Al [20] ; (b) 0.655PIN-0.345PT 晶 体 [53] ; (c) 0.48PScN-0.52PT 晶 体 [61] ; (d) 0.8PLuN-0.2PT晶体 [65] 3.3 PIN-PT…”

Optical Properties and Band Gap of Ternary PSN-PMN-PT Single Crystals

“…To overcome these shortcomings and improve the Tc and the Tr-t, Pb(Sc 1/2 Nb 1/2 )O 3 (PSN) was introduced into the PMN-PT because its Tc that is much quite higher than that of PMN [11][12][13][14][15][16]. A relatively high phase transition temperature (Tc > 200 • C) has been reported in PSN-PMN-PT single crystals at the MPB, with good piezoelectric d 33 (1260~1550 pC/N) [16].…”

“…Therefore, we speculate that ternary PSN-PMN-PT crystal will have higher optical damage-resistance properties than PMN-PT crystal, indicating its potential application prospect in the optical field. At present, most studies focus on these crystals' electrical properties [11][12][13][14][15][16]. No study has yet focused on the optical properties of the ternary PSN-PMN-PT crystal, which are detrimental to the design of optical devices and the development of multifunctional materials.…”