Structural, Optical And Microwave Dielectric Properties Of Barium Tetra Titanate (Bati4o9) Ceramics

Ceramic composition of Barium tetra titanate (BaTi4O9) is prepared via conventional solid state, mixed oxides route. The XRD revealed a single phase orthorhombic (Amm2)structured BaTi4O9 compound calcined at 1250 degrees C for 2 h in air. The values of the relative permittivity (epsilon(r)) varied from similar to 38 to 43 and quality factor (Q xf) from similar to 27000 to 39000 GHz at 3 GHz frequency with increasing sintering temperatures ranging from 1500 degrees C to 1580 degrees C in air. The microwave dielectric properties of the sintered ceramic sample depend considerably on sintering temperature and their microstructure. BaTi4O9 can be a promising microwave dielectric material for microwave applications.