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Solid solutions of Nd x Y 1Àx TiNbO 6 ceramics were prepared through the solid-state ceramic route. The materials were calcined at 12501C and sintered in the range 1400-15501C. The structure of the system was analyzed using the X-ray diffraction and vibrational spectroscopic analysis. The morphology and the sintering behavior of the samples were analyzed using scanning electron microscopy. The dielectric constant (e r ), temperature coefficient of resonant frequency (t f ), and the unloaded quality factor (Q u ) were measured in the microwave frequency region using the cavity resonator method. The e r and t f increased with an increase in the concentration of Nd in the solid solutions. Nearly zero temperature coefficient of resonant frequency was obtained for the Nd 0.6 Y 0.4 TiNbO 6 ceramic. Samples are of high quality factor and are useful for microwave applications.

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LnTiSbxTa1−xO6 ceramics were prepared by the conventional solid‐state ceramic route for x=0, 0.05, 0.1, 0.15, and 0.2. The structures of the materials were analyzed using X‐ray diffraction techniques. The cell parameters and the theoretical densities of the samples were calculated using least square methods. The materials are sintered to >94% of theoretical density at 1480°C. The microwave dielectric properties were measured using the cavity resonator method. The surface morphology of the sintered samples was analyzed using scanning electron microscopy. All the materials have good microwave dielectric properties and are suitable for dielectric resonator applications.