Tin Substitution for Titanium in Ba6−3xNd8+2xTi18O54 Microwave Dielectric Ceramics |
| |
Authors: | Yi Li Xiang Ming Chen † Ni Qin YaoWu Zeng |
| |
Affiliation: | Department of Materials Science &Engineering, Zhejiang University, Hangzhou 310027, China |
| |
Abstract: | Tin (Sn) substitution for titanium (Ti) was investigated in Ba6?3 x Nd8+2 x Ti18O54 ( x =1/2, 2/3, and 3/4) ceramics. A small amount ( z <0.1) of Sn substitution resulted in Ba6?3 x Nd8+2 x (Ti1? z Sn z )18O54 solid solutions, and some secondary phases were observed with increasing Sn content. A small amount of Sn substitution improved the Q f value significantly, while, due to the formation of secondary phases, the Q f value degraded sharply for larger Sn content. The relative dielectric constant (?r) decreased with increasing Sn-content, while the temperature coefficient of resonant frequency (τf) generally decreased, although an obvious fluctuation was observed for x =3/4. |
| |
Keywords: | |
|
|