研究了Ca[(Li1/3Nb2/3)0.8Sn0.2]O3-δ-xTiO2(0≤2≤0.2)陶瓷的微观结构及微波介电特性.当0≤x≤10%(摩尔分数,下同)时,体系为单一钙钛矿相.随Ti4+含量的增加,B位1:2有序度下降,品质因素减小,谐振频率温度系数先由-22.6×10-6/℃增加到-11.1×10-6/℃,然后向负值方向移动.当Ti4+含量为10%时,陶瓷微波介电性能最佳:εr=29.3,Qf=2684GHz,τf=-11.1×10-6/℃.
参考文献
| [1] | Choi J W;Kang C Y;Yoon S J et al.Microwave dielectric properties of Ca[(Li1/3 Nb2/3)1-x Mx]3-δ (M=Sn,Ti) ceramics[J].Journal of Materials Research,1999,14(09):3567. |
| [2] | Choi J W;Ha J Y;Yoon S J et al.Microwave dielectric characteristics of Ca[(Li1/3 Nb2/3)1-x Zrx]3-δ ceramics[J].Japanese Journal of Applied Physics,2004,43(01):223. |
| [3] | Cohn S B.Microwave bandpass filters containing high-Q dielectric resonators[J].IEEE Trans Microwave Theory Techn,1968(16):218. |
| [4] | Takada T;Wang S F;Syoshikawa S et al.Effect of glass additions on BaO-TiO2-WO3 microwave ceramics[J].Journal of the American Ceramic Society,1994,77(07):1909. |
| [5] | Wakino K;Murata M;Tamura H .Far infra-red reflection spectra of Ba(Zn,Ta)O3-BaZrO3 dielectric resonator material[J].Journal of the American Ceramic Society,1986,69(01):34. |
| [6] | Iddles D M et al.Relationships between dopants,microstructure and the microwave dielectric properties of ZrO2-TiO2-SnO2 ceramics[J].Journal of Materials Science,1992,27(23):6303. |
| [7] | Lee Hyo-Jong;Kim In-Tae;Kug Sun Hong .Dielectric properties of AB2O6 compound sat microwave frequencies[J].Japanese Journal of Applied Physics,1997,36(10A):L1318. |
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