Misidentification of hexagonal phase as barium carbonate during chemical synthesis of barium titanate nanopowders. (2020)

• Record Type: Journal Article
• Authors: Selvaraj, M.; Venkatesan, R.; Mayandi, J.; Venkatachalapathy, V.
• Is Part Of: Materials today. Volume 23:Part 1(2020)
• Page Start: 81
• Page End: 84
• Publication Date: 2020
• Subjects: Barium titanate -- X-ray diffraction -- Raman spectroscopy -- Hexagonal phase -- Barium carbonate -- Orthorhombic phase; Materials science -- Congresses -- Periodicals; 620.1
• DOI: 10.1016/j.matpr.2019.06.713
• Languages: English
• ISSNs: 2214-7853

Abstract

Abstract: Barium titanate (BaTiO3 ) nanopowders were synthesized by combining two facile route namely so-gel and hydrothermal process. The samples synthesized at 100 and 200 °C are found to exhibit cubic crystalline structure and mixed tetragonal and orthorhombic phases, respectively, as analyzed from XRD studies. In addition, characteristic peaks of unknown phase often identified as barium carbonate (BaCO3 ) was also observed. Post-annealing treatment suggests stabilization of hexagonal BaTiO3, confirmed by XRD and Raman studies.