Abstract
In this research, we prepared novel (1-x)Mg(Ti0.95Sn0.05)O3-(x)SrTiO3 (0 ≤ x ≤ 0.1) ceramics via traditional solid-state reaction process and explored their structural, vibrational, optical, dielectric, and shielding properties. XRD and Rietveld refinements revealed that the Mg(Ti0.95Sn0.05)O3 crystallized into the trigonal structure with space group R3¯, while the SrTiO3 phase exhibited cubic symmetry with space group Pm3¯m. A near-zero τf was obtained for the 0.95Mg(Ti0.95Sn0.05)O3-0.05SrTiO3 (εr = 16.46, tan δ = 2.06 × 10−3, and τf = 3.18 ppm/⁰C, at 1 MHz) sintered at 1250⁰C. In the Ku-band (12.4–18 GHz), this composition exhibited εr in the range of 13.49–14.01 and tan δ in the range of 1.4 × 10−2–2.8 × 10−2. Furthermore, 0.95Mg(Ti0.95Sn0.05)O3-0.05SrTiO3 with pellet thickness of 1.5 mm can restrict the penetration of 75% or higher incident power with an effective bandwidth of 3.5 GHz. Due to its suitable properties, the prepared composition can be used for 5 G applications.
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