Grain growth in Na0.5Bi0.5TiO3-based solid solutions. Issue 196 (12th February 2019)

• Record Type: Journal Article
• Authors: Eglite, L.; Antonova, M.; Birks, E.; Knite, M.; Livinsh, M.
• Is Part Of: Integrated ferroelectrics. Issue 196(2019)
• Page Start: 112
• Page End: 119
• Publication Date: 2019-02-12
• Subjects: Lead-free ferroelectrics -- NBT -- abnormal grain growth -- solid-state sintering; Ferroelectric devices -- Periodicals; Integrated circuits -- Periodicals; 537.244805
• DOI: 10.1080/10584587.2019.1591971
• Languages: English
• ISSNs: 1058-4587

Abstract

Abstract: This paper discusses effects of different dopants, sintering technique and parameters on microstructure and properties of pure and Yb, Er-doped Na0.5 Bi0.5 TiO3 (NBT). All stoichiometric compositions follow the abnormal grain growth mechanism (AGG) and exhibit a bimodal grain size distribution. Bi over-stoichiometry, two step sintering and hot pressing are effective inhibitors of AGG. Microstructure of sintered NBT greatly influences such properties as dielectric permittivity and depolarization temperature.