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Abstract: The effect of the addition of glass on the densification, low temperature sintering, and microwave dielectric properties of the Ca[(Li1/3Nb2/3)1−x Tix]O3−δ(CLNT) was investigated. Addition of glass (B2O3-ZnO-SiO2-PbO system) improved the densification and reduced the sintering temperature from 1150∘C to 900∘C of Ca[(Li1/3Nb2/3)1−x -Tix]O3−δ microwave dielectric ceramics. As increasing glass contents from 10 wt% to 15 wt%, the dielectric constants (εr) and bulk density were increased. The quality factor (Q⋅f0), however, was decreased slightly. The temperature coefficients of the resonant frequency (τf) shifted positive value as increasing glass contents over Ti content is 0.2 mol. The dielectric properties of Ca[(Li1/3Nb2/3)0.75Ti0.25]O3−δ with 10 wt% glass sintered at 900∘C for 3 h were εr = 40 Qf0 = 11500 GHz, τf = 8, ppm/C. The relationship between the microstructure and dielectric properties of ceramics was studied by X-ray diffraction (XRD), and scanning electron microscope (SEM).

Abstract: Ferroelectric lithium niobate (LiNbO3) thin films were epitaxially fabricated on sapphire (0001) and polycrystalline diamond substrates using pulsed laser deposition (PLD). Various deposition conditions are investigated to realize deposition of c-axis oriented LiNbO3 thin film. The LiNbO3 thin films were chemically etched after electric poling, being investigated by scanning electron microscope (SEM).