BaMnTiO3 synthesized by the oxalate and impregnation methods

• Main Authors: Pookmanee P., Ketwong P., Phanichphant S.
• Format: Conference or Workshop Item
• Language: English
• Published: 2014
• Online Access: http://www.scopus.com/inward/record.url?eid=2-s2.0-62949168389&partnerID=40&md5=c6bf6f21a45a0f746503cd930f3b2e02; http://cmuir.cmu.ac.th/handle/6653943832/5384
• Institution: Chiang Mai University

Barium titanate (BaTiO3) was synthesized by the oxalate method with the starting precursors as barium chloride and potassium titanium oxalate with mole ratio of 1:1. Precipitate was obtained after adding oxalic acid until the pH of the final solution was 4. The precipitate was milled and calcined at 700 °C for 2h. Mn-doped barium titanate (BaMnTiO3) was prepared by the impregnation method. Barium titanate calcined at 700 °C was mixed with 2 and 4 mole % of Mn from manganese chloride. The mixed powder was calcined at temperatures of 800 °C and 900°C for 2h. The phase of BaMnTiO 3 was studied by X-ray diffraction (XRD). Hexagonal structure of Ba(Mno 33Ti0.67)O2.84 was obtained after calcination at 900 °C for 2h with 2 and 4 mole % of Mn. The morphology and chemical composition were investigated by scanning electron microscopy (SEM) and energy dispersive spectroscopy (EDS). The particle size of Ba(Mn0.33Ti 0.67)O2.84 powder was in the range of 50-60 nm with irregular in shape. The elemental composition of barium, manganese, titanium and oxygen showed the characteristic X-ray energy values. © 2008 Trans Tech Publications, Switzerland.