Impedance spectroscopy, dielectric, ferroelectric and electrical transport properties of Ba-doped Bi3TiNbO9 ceramics

Dahake, Kartik; Jain, Pranat; Subohi, Oroosa

doi:10.1007/s10854-021-07054-3

Cited by 5 publications

(1 citation statement)

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“…Bi 3 TiNbO 9 (BTNO) with m = 2 that consists of (Bi 2 O 2 ) 2+ layers between which there are (BiTiNbO 7 ) 2layers [26] is a promising material for fabricating high temperature piezoelectric sensors because of their very high Curie temperature T C (914-921 • C) [14,15], despite the fact that the piezoelectric modulus of BTNO ceramic is fairly low (d 33 < 7 pC/N) [27]. Numerous examples [28][29][30][31][32][33][34][35][36][37][38][39][40][41][42] showed that replacements of atoms in Aand also in B-positions of an AP's crystal lattice led to a change in the structure, the dielectric properties and significantly influenced the polarization processes in these compounds.…”

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confidence: 99%

The Structural and Dielectric Properties of Bi3−xNdxTi1.5W0.5O9 (x = 0.25, 0.5, 0.75, 1.0)

2022

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A new series of layered perovskite-like oxides Bi3−xNdxTi1.5W0.5O9 (x = 0.25, 0.5, 0.75, 1.0) was synthesized by the method of high-temperature solid-state reaction, in which partial substitution of bismuth (Bi) atoms in the dodecahedra of the perovskite layer (A-positions) by Nd atoms takes place. X-ray structural studies have shown that all compounds are single-phase and have the structure of Aurivillius phases (APs), with close parameters of orthorhombic unit cells corresponding to space group A21am. The dependences of the relative permittivity ε/ε0 and the tangent of loss tgσ at different frequencies on temperature were measured. The piezoelectric constant d33 was measured for Bi3−xNdxTi1.5W0.5O9 (x = 0.25, 0.5, 0.75) compounds of the synthesized series.

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