A critical review on crystal structure mechanisms, microstructural and electrical performances of Bi0.5Na0.5TiO3—SrTiO3 perovskites

• Published in: Journal of electroceramics Vol. 49; no. 2; pp. 94 - 108
• Main Author: Supriya, Subramani
• Format: Journal Article
• Language: English
• Published: New York Springer US 01.10.2022; Springer Nature B.V
• Subjects: Bismuth titanate; Ceramics; Characterization and Evaluation of Materials; Chemistry and Materials Science; Composites; Crystal structure; Crystallography and Scattering Methods; Electrochemistry; Ferroelectric materials; Ferroelectricity; Glass; Industrial applications; Materials Science; Multilayers; Natural Materials; Optical and Electronic Materials; Perovskites; Phase transitions; Piezoelectricity; Polycrystals; Random access memory; Single crystals; State-of-the-art reviews; Strontium titanates; Thin films; Grain size; BNT; SEM; Dielectric; Density; Piezoelectric
• ISSN: 1385-3449; 1573-8663
• DOI: 10.1007/s10832-022-00295-6

The global demand for Bi 0.5 Na 0.5 TiO 3 (BNT) based perovskite materials with wide-ranging applications in the sensors, detectors, capacitors, random access memories, and environmental fields is on the increase. The Sr 2+ doped BNT system has been extensively investigated in the past decade due to its excellent structural, electrical and microstructural applications. This review encompasses the fundamental state-of-the-art development of BNT-based ceramics, focusing on the underlying SrTiO 3 (ST) composition and enhanced crystal structure mechanisms. The diffuse phase transition related to the ferroelectric nature of the sample is specifically demonstrated. BNT-ST in various forms like single crystals, thin films, multi-layers, and polycrystals for enhanced piezoelectric and ferroelectric activities were discussed in detail. Finally, these systems' key challenges and future directions are also included. Indeed, this review will propagate more exhaustive research on non-toxic and cost-effective pathways to produce BNT-based components with dynamic properties, which can be applied in several industrial applications with outstanding performance.