Microwave dielectric properties of Li2+xTi1−4xNb3xO3 (0≤x≤0.1)

High Q Microwave Dielectric Ceramics in the Li2(Zn1−xAx)Ti3O8 (A = Mg, Co; x = 0.02–0.1) System

“…Even for Li 2 (Zn 0.92 Co 0.08 )Ti 3 O 8 , it still shows an improvement of 94%. The improvement of Q × f value can be achieved by small amount of substitutions and a similar phenomenon was reported previously . All samples exhibited negative τ f and the absolute τ f value increased linearly with increasing x value.…”

“…In recent years, the study of microwave dielectric ceramics has been focusing on the low‐loss substrates, antennas and passive components operating at high‐frequency regime, and the demand for developing new low‐cost, moderate dielectric constant materials with a high Q × f has become more important than ever due to the carrier frequency of interest in communication systems was extended from GSM900 MHz to ISM bands (2.4, 5.2, and 5.8 GHz) or even to the millimeter wave range . Moreover, a rapid growth of the cell phone and wireless communication markets in recent years has further led to extensive research and development in the area of microwave dielectrics with a high Q × f …”

Microstructure and microwave dielectric properties of (1−y)Li3NbO4+yLi2TiO3(Li2SnO3) ceramics

“…An excellent combined microwave dielectric properties were obtained for x = 0.07: ε r = 19.5, Q × f = 84,868 GHz, [7]. The sintering behavior, microstructure and microwave dielectric properties for the x > 0.1 compositions have not been reported.…”

Sintering behavior, microstructure and microwave dielectric properties of Li2+xTiO3 (0≤x≤0.2)

“…Among them, for example, Li 2 TiO 3 in which Li layers alternated with ordered (Li, Ti) layers had the dielectric constant of 22, Q × f value of 63,500 GHz (8.6 GHz), and f value of 20.3 ppm/ • C. Its Q × f value was significantly improved by small amount of MgO addition (24 mol%) or Li 3 NbO 4 , although the ordering degree decreased with the addition of MgO or Li 3 NbO 4 . The f value could be tuned to near zero simultaneously [5,6]. However it was very difficult to obtain a pure or doped dense Li 2 TiO 3 ceramic in our previous experiment.…”