Dielectric, piezoelectric and ferroelectric anisotropy in grain oriented Aurivillius phase Sr₂Bi₄Ti₅O₁₈processed by the reactive templated technique

Effect of ZnSnO3 on dielectric and ferroelectric properties of Sr2Bi4Ti5O18 ceramics

“…It was reported in the literature that the BLSF compounds exhibit a platelike morphology of grains because of anisotropic grain growth rates. 22 To view the surface morphology of the SBT-0, SBT-5, SBT-10, and SBT-20, the SEM micrographs of the sintered pellets were recorded, and the obtained SEM images were depicted in Figure 4A,C,E,G. Here, the surface morphology of all the samples shows a platelike grain of SBT and ZS-doped SBT.…”

“…[16][17][18][19] The ferroelectric and dielectric properties of the ceramic are largely dependent on the synthesis process, grain size, surface morphology, elemental composition, and sintering temperature. [20][21][22][23] For instance, 645 nm (average grain) sized SBT ceramics obtained by the sol-gel route have shown the highest remanent polariza-tion (2P r = 16.4 μC/cm 2 ) as well as the highest piezoelectric coefficient (d 33 = 22 pCN −1 ) when compared to that of 115 nm (2P r = 0.98 μC/cm 2 and d 33 = 10 pCN −1 ) and 1427 nm (2P r = 13.1 μC/cm 2 and d 33 = 17 pCN −1 ) sized SBT ceramics obtained by the same method. 20 The ferroelectric and dielectric properties of this ceramic can be tuned or improved by A-site, and B-site substitutions, with sintering aids, making solid solutions with other ferroelectric materials or composites.…”

“…From an application point of view, especially ferroelectric nonvolatile random access memory devices as well as high‐temperature piezoelectric devices; SBT is the most promising candidate without any hazardous constituents 16–19 . The ferroelectric and dielectric properties of the ceramic are largely dependent on the synthesis process, grain size, surface morphology, elemental composition, and sintering temperature 20–23 . For instance, 645 nm (average grain) sized SBT ceramics obtained by the sol–gel route have shown the highest remanent polarization (2 P r = 16.4 μC/cm 2 ) as well as the highest piezoelectric coefficient ( d 33 = 22 pCN −1 ) when compared to that of 115 nm (2 P r = 0.98 μC/cm 2 and d 33 = 10 pCN −1 ) and 1427 nm (2 P r = 13.1 μC/cm 2 and d 33 = 17 pCN −1 ) sized SBT ceramics obtained by the same method 20 .…”

Complex Analysis of High-Temperature Piezoelectric Ceramics Combining Sr and Nb Co-Doped Bi4Ti3O12

“…In order to improve the electrical properties of BIT materials, massive studies have been carried out both at home and abroad [12][13]. It is found that doping with Bsite ions (V 5+ , Nb 5+ , W 6+ , and so on) to modify BIT ceramics can promote sintering and improve its piezoelectric and ferroelectric properties [14].…”