Preparation and structural characterization of Fe-doped BaTiO3 diluted magnetic ceramics. Issue 13 (September 2017)

• Record Type: Journal Article
• Authors: Gheorghiu, Felicia; Simenas, Mantas; Ciomaga, Cristina Elena; Airimioaei, Mirela; Kalendra, Vidmantas; Banys, Juras; Dobromir, Marius; Tascu, Sorin; Mitoseriu, Liliana
• Is Part Of: Ceramics international. Volume 43:Issue 13(2017)
• Page Start: 9998
• Page End: 10005
• Publication Date: 2017-09
• Subjects: BaTi1−xFexO3−x/2 -- Dilute magnetic ceramics -- Tetragonal phase -- Microstructure -- EPR spectra -- XPS technique; Ceramics -- Periodicals; Céramique industrielle -- Périodiques; Ceramics; Periodicals; Electronic journals; 666
• DOI: 10.1016/j.ceramint.2017.05.013
• Languages: English
• ISSNs: 0272-8842

Abstract

Abstract: Fe-doped BaTiO3 ceramics produced from powders prepared by solid state reaction at various processing parameters (temperature, time) were investigated and discussed. X-ray diffraction analysis confirmed the existence of the tetragonal phase in BaTi1−x Fex O3−x/2 ( x =0.005) ceramics. The microstructural characterization reveals that a low calcination temperature leads to a higher densification of the bulk samples at around 96% relative density with average grain sizes ~6 µm. The oxidation state of the metal ions in the sintered samples analysed by means of X-ray photoelectron spectroscopy showed the presence of Ti 4+ 2p3/2 and Ti 4+ 2p1/2 peaks in Fe-doped BaTiO3 and the lack of Ti 3+ ions, which confirms the compositional quality of these ceramics. The electron paramagnetic resonance measurements proved the incorporation of Fe ions as Fe 3+ in the BaTiO3 lattice.