A co-precipitation technique to prepare BiNbO4 powders
2007; Elsevier BV; Volume: 34; Issue: 6 Linguagem: Inglês
10.1016/j.ceramint.2007.03.022
ISSN1873-3956
AutoresR. Radha, U.N. Gupta, V. Samuel, H. Muthurajan, H.H. Kumar, V. Ravi,
Tópico(s)Acoustic Wave Resonator Technologies
ResumoA simple co-precipitation technique was successfully used for the preparation of pure ultrafine single phase BiNbO4. A standard ammonium hydroxide solution was used to precipitate Bi3+ and Ta5+ 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 BiNbO4 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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