| Title |
Effect of ({Zn}_{1/3}{Nb}_{2/3}){O}_{2} Addition on the phase changes and dielectric properties of {BaTiO}_{3}-{3TiO}_{2}ceramics |
| Keywords |
{BaTi}_{4}{O}_{9} ; {Ba}_{2}{Ti}_{9}{O}_{20} ; Ba({Zn}_{1/3}{Nb}_{2/3}){O}_{3} ; Dielectric Property ; Phase Chage |
| Abstract |
Effect of (Zn_{1}3/Nb_{2}3/) O_{2} addition on the phase changes and microwave dielectric properties of BaTi O_{3}-3Ti O_{2} ceramics were investigated. Addition of (Zn_{1}3/Nb_{2}3/) O_{2} to BaTi O_{3}-3Ti O_{2} resulted in the formation of Ba Ti_{4}O_{9}, Ba_{2} Ti_{9} O_{20}, Ba(Zn_{1}3/Nb_{2}3/) O_{3}, and Ti O_{2} phases. Ba Ti_{4}O_{9} phase was gradually transformed to Ba_{2} Ti_{9} O_{20}. This was identified by XRD and microstructure. As the Ba Ti_{4}O_{9} phase transformed to Ba_{2} Ti_{9} O_{20} phase, the dielectric constant increased to 37.5. Q*f_{o} value was 40000 at x=0.04, and the temperature coefficient of resonant frequency was +10ppm/.deg. C.C.. C.C. |