PENGARUH PENAMBAHAN VANADIUM OKSIDA (V2O5) TERHADAP STRUKTUR KRISTAL Ba 0.9 Ca0.1TiO3

Abstract

Barium calsium titanate (BCT) is one of perovskite’s crystal structure and has polimorfism to temperature. Composition of BCT was synthesized via oxalate coprecipitation precursor. The powder was V⁵⁺ doped by 0; 0.5 and 1 mole %. It was analyzed by thermal analysis. Single phase of BCT was formed at calcination temperature 700⁰C for 2 hours. The powder was compacted and pelleted. To decrease porous sample sintered at temperature 1300⁰C for 2 hours. Vanadium doped can decrease temperature of sinter  to be 1250⁰C. The influences of dopant on samples were analyzed by XRD. Tetragonallity of sample that undoped is 1.0031 and doped V⁵⁺ 0.5 % is 1.0026 and doped V⁵⁺ 1 % is 1.0019. Characterization on crystal structure show that V⁵⁺ subtituted into Ti⁴⁺ sites to form single phase of BCT.

Keywords: BCT, copresipitation, vanadium, single phase.