Abstract: Bismuth sodium titanate [Bi_(0.5)Na_(0.5)TiO_3, BNT] is considered to be an excellent candidate for a key material of lead-free piezoelectric ceramics. The clear and transparent gels of BNT can be prepared using tetrabutyl titanate, bismuth nitrate pentahydrate and sodium acetate anhydrous as starting materials by Sol-gel method, the BNT fine powders are produced after the dry gels are calcined. XRD patterns show that the second phase in BNT powders is Bi_(12)TiO_(20). With the temperature increasing, the intensity of the Bi_(12)TiO_(20) reduces and the grain size of BNT powders increases. Well-ordered atoms on (101) crystal plane of the powders are formed by characterization of XRD results.

Key words: bismuth sodium titanate;XRD characteristics;temperature;Sol-gel method