Abstract
A simple co-precipitation technique was successfully used for the preparation of pure ultrafine single phase BiNbO 4. A standard ammonium hydroxide solution was used to precipitate Bi 3+ and Ta 5+ cations as hydroxides simultaneously under basic conditions. For comparison, BN powders were also prepared by the traditional solid-state method. It is observed that the co-precipitation technique produces BiNbO 4 on heating at 600 °C, whereas complete phase formation occurs only at 800 °C in the solid-state method. The phase contents and lattice parameters were studied by powder X-ray diffraction (XRD).
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