In this study, high-density Li2Mg3T

In this study, high-density Li2Mg3TiO6 nanocrystalline ceramics were successfully fabricated via the CSP method and a low-temperature sintering step. The green pellets compacted at 180°C via the CSP method exhibited a high density of ~90% TD. The ceramics that were post-sintered at 800–950°C for 4 h yielded an average density of ~96% TD, with grain sizes in the 100 and 1200 nm range. Post-sintering below 950°C resulted in no considerable increase in the relative density, with the compaction of the green pellets at 180°C providing the dominant contribution to the final Li2Mg3TiO6 ceramics densification. Investigating microwave dielectric properties of the Li2Mg3TiO6 ceramics indicated that the Q × f values had a strong dependence on grain size, which varied from 17790 to 47960 GHz for the grain size ranging between 100 and 1200 nm. The εr and τf values did not undergo any significant changes over this grain size range, with values in the 15.51–15.68 and–33 to–26 ppm/°C ranges, respectively.