A co-precipitation method for preparation of Bi3TiNbO9 powders

作者：Gupta U N; Samuel V; Muthurajan H; Kumar H H; Patil S D; Ravi V^*

来源：Ceramics International, 2008, 34(3): 675-677.

DOI：10.1016/j.ceramint.2007.02.002

• ceramics
• electronic material
• oxides
• chemical synthesis
• XRD

A simple co-precipitation technique has been successfully used for the preparation of pure, ultrafine, single phase Bi3TiNbO9 (BTN). An aqueous ammonium hydroxide solution was used to simultaneously precipitate Bi3+, Ti4+ and Nb5+, cations as hydroxides under basic conditions (pH similar to 9). No pyrochlore phase was found while heating powder at 500 degrees C and pure BTN phase was found to be formed by X-ray diffraction (XRD). For comparison, BTN samples were also synthesized by the traditional solid state method. The sequence of phase formation in both cases were investigated by XRD studies.

• 出版日期2008-4