Author(s): Zhang, P (Zhang, Ping); Sun, KX (Sun, Kexin); Mao, XR (Mao, Xurui); Xiao, M (Xiao, Mi); Zheng, ZT (Zheng, Zhentai)
Source: CERAMICS INTERNATIONAL Volume: 46 Issue: 6 Pages: 8097-8103 DOI: 10.1016/j.ceramint.2019.12.036 Published: APR 15 2020
Abstract: A series of novel Li3-xMg2Nb1-xTixO6 (0.02 <= x <= 0.08) ceramics with excellent microwave dielectric properties and relatively low sintering temperatures were synthesized via the solid-phase method. The correlations between sintering characteristics and microwave dielectric properties of the novel system were analyzed in detail. By (Li+/Ti4+) ions co-doped Li3Mg2NbO6 ceramics, all compounds possessed a single phase with orthorhombic structure, pertaining to the space group Fddd (70). The change regulation of dielectric constant and Q*f values was similar to density, which ascended to the maximum value first and then declined as the sintering temperature increased. Furthermore, the tau(f) values constantly shifted to 0 ppm/degrees C with the content of complex ions (Li+/Ti4+) increasing. The best properties of Li3.06Mg2Nb0.94Ti0.06O6 ceramics sintered at 1025 degrees C were epsilon(r) = 14.34, Q*f = 154,113 GHz, and tau(f) = -2.17 ppm/degrees C.
Accession Number: WOS:000519661800125
ISSN: 0272-8842
eISSN: 1873-3956
Full Text: https://www.sciencedirect.com/science/article/pii/S0272884219335138?via%3Dihub