Influence of V2O5 Additions to 5Li2O–1Nb2O5–5TiO2 Ceramics on Sintering Temperature and Microwave Dielectric Properties |
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| Authors: | Qun Zeng Wei Li Jian-lin Shi Xian-lin Dong Jing-kun Guo |
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| Affiliation: | Shanghai Institute of Ceramics, Chinese Academy of Sciences, Shanghai 200050, China;Graduate School of Chinese Academy of Science, Beijing 100039, China; Key Laboratory for Ultrafine Materials of Ministry of Education, School of Materials Science and Engineering, East China University of Science and Technology, Shanghai 200237, China |
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| Abstract: | The effects of the addition of V2O5 on the sintering behavior, microstructure, and microwave dielectric properties of 5Li2O–1Nb2O5–5TiO2 (LNT) ceramics have been investigated. With low-level doping of V2O5 (≤3 wt%), the microstructure of the LNT ceramic changed from a special two-level intergrowth structure into a two-phase composite structure with separate grains. And the sintering temperature of the LNT ceramics could be lowered to around 900°C by adding a small amount of V2O5 without much degradation in microwave dielectric properties. Typically, better microwave dielectric properties of ?r=41.7, Q × f =7820 GHz, and τ f =45 ppm/°C could be obtained for the 1 wt% V2O5-doped ceramics sintered at 900°C. |
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